bluuebunny/crossref_metadata_2025 huggingface dataset:
Device-Independent Quantum Key Distribution with Realistic Single-Photon Source Implementations
Authors: González-Ruiz Eva M. , Rivera-Dean Javier , Cenni Marina F. B. , Sørensen Anders S. , Acín Antonio , Oudot Enky
Published: September 2023

We investigate a set-up for Device-Independent Quantum Key Distribution based on single-photon sources. We derive conditions to attain non-zero secret-key rates in terms of their second-order autocorrelation function and the photon efficiency and indistinguishability.
Silicon Nitride Integrated Photonics with Intrinsic Quantum Emitters
Authors: Senichev Alexander , Martin Zachariah O. , Peana Samuel , Yesilyurt Omer , Matthiessen Owen M. , Sychev Demid , Lawrie Benjamin , Lagutchev Alexei S. , Boltasseva Alexandra , Shalaev Vladimir M.
Published: September 2023

We create intrinsic quantum emitters in silicon nitride, study their structure and temperature-dependent optical properties, and demonstrate monolithic integration with photonic waveguides to evaluate the potential of these single-photon sources for quantum information applications.
Spectrally Multimode Squeezed States of Light in the Telecom Band using Waveguides
Authors: Rodriguez Victor R. , Fainsin David , Zanin Guilherme L. , Treps Nicolas , Diamanti Eleni , Parigi Valentina
Published: September 2023

We present and characterize a source of spectrally multimode squeezed state of light at telecom wavelengths. The state is made out of a periodically-poled waveguide (PPKTP) pumped by a femtosecond laser.
Photon Fock State Generation in Photonic Microresonators
Authors: Arend Germaine , Feist Armin , Huang Guanhao , Yang Yujia , Henke Jan-Wilke , Raja Arslan Sajid , Kappert F. Jasmin , Pan Jiahe , Lourenco-Martins Hugo , Qiu Zheru , Liu Junqiu , Kfir Ofer , Kippenberg Tobias J. , Ropers Claus
Published: September 2023

We generate correlated pairs of free electrons and cavity photons by sending an electron beam across a photonic microresonator and filtering temporal coincidences. We further characterize the pairs analogue to a heralded single photon source.
Entanglement of Distant Single-Atoms for Quantum Networks
Authors: van Leent Tim , Fertig Florian , Zhou Yiru , Malik Pooja , Zhang Wei , Weinfurter Harald
Published: September 2023

Entanglement distribution is at the core of future quantum networks. Here we present an experiment employing single-atoms to demonstrate device-independent quantum key distribution and atom-atom entanglement generated over fiber links of 33 km.
Coherent interactions of a telecom wavelength quantum dot with resonant laser photons
Authors: Müller T. , Wells L. , Anderson M. , Shooter G. , Skiba-Szymanska J. , Krysa A. , Huwer J. , Stevenson R. M. , Heffernan J. , Ritchie D. A. , Shields A. J.
Published: September 2023

Here we show Fourier-limited as well as elastically scattered photons at telecom wavelengths from InAs/InP quantum dots. Indistinguishability measurements over 25 km of fibre further highlight the potential of this system for quantum network applications.
A Telecom Infrastructure Compatible Quantum Link Using NV-centers
Authors: Stolk Arian , van der Enden Kian , Roehsner Marie-Christine , Raa Ingmar te , Hagen Ronald , Biemond Benjamin , Meskers Arjan , Morits Jaco , van Zwet Erwin , Geus Jan Fabian , Elsen Florian , Nyga Sebastian , Jungbluth Bernd , Häfner Constantin , Hanson R.
Published: September 2023

We show the latest progress towards establishing a solid-state, metropolitan quantum link, consisting of two remote Nitrogen Vacancy (NV)-centers and a central measurement station. The entanglement is generated by converting single emitted photons to the same frequency in the telecom L-band, guiding them to a central beamsplitter, where a joint Bell-state measurement projects the NV-centre spins in an entangled state.
Operational exploration of quantum contextuality by simultaneous control of complementary photon polarizations
Authors: Matsuyama Kengo , Ji Ming , Hofmann Holger F. , Iinuma Masataka
Published: September 2023

Contextual relations between complementary pairs of polarization components of two photons were observed by controlling the degree of entanglement and the local polarizations, highlighting the non-classical aspects of the relations between measurement contexts.
Photon entanglement via linear operator transformations
Authors: Birrittella Richard J. , Alsing Paul M. , Gerry Christopher C. , Knight Peter L.
Published: September 2023

We investigate entanglement in various photonic states interfering on a 50:50 BS and obtain some, at first sight, unexpected results, that we subsequently explain.
Application Range of Crosstalk-Affected Spatial Demultiplexing for Resolving Separations Between Unbalanced Sources
Authors: Linowski Tomasz , Schlichtholz Konrad , Sorelli Giacomo , Gessner Manuel , Walschaers Mattia , Treps Nicolas , Rudnicki Łukasz
Published: September 2023

Recent efforts showed that for perfectly balanced light sources, spatial demultiplexing achieves superresolution even in the presence of measurement crosstalk. We thoroughly analyze the method’s practical efficiency in the more realistic case of unbalanced sources.
Structured near-field spatial correlations in entangled photons
Authors: Prasad Radhika , Wanare Sanjana , Karan Suman , Joshi Mritunjay K. , Bhattacharjee Abhinandan , Jha Anand K.
Published: September 2023

Structured correlations are important for quantum imaging. We propose and experimentally demonstrate a method to structure spatial two-photon correlations in the near-field by controlling phase-matching. Entanglement witnessed in the near-field enables these structured two-photon correlations to be useful for entanglement-based applications.
In search of dissipative time crystals via arrays of self-sustained oscillators. Taming quantum phase diffusion by coherent delay feedback
Authors: Li Ming , de Valcárcel Germán J. , Navarrete-Benlloch Carlos
Published: September 2023

We show feasibility of time-crystalline states in arrays of self-sustained quantum oscillators. Delayed coherent feedback helps towards this goal, which we investigate with a novel coherent-state representation Langevin formalism that we test against known results.
Development of a Diamond Platform for Quantum Sensing
Authors: Coccia G. , Shahbazi S. , Guo Y. , Kavatamane V. , Kubanek A. , Bennett A. J. , Hadden J. P. , Barclay P. E. , Ramponi R. , Eaton S. M.
Published: September 2023

We present two novel diamond based room-temperature quantum sensors: the first is achieved through a hybrid method of ion implantation and femtosecond laser fabrication, while the second relies on a single step of laser writing.
Experimental Study of Squeezed States Generation Optimal Regimes in Dual-pumped On-chip Microresonators
Authors: Vorobyev Alexander K. , Kapridov Nikolay A. , Grechko Georgy V. , Chermoshentsev Dmitry A. , Shitikov Artem E. , Masalov Anatoly V. , Bilenko Igor A.
Published: September 2023

We perform an experimental optimization of squeezed light generation via degenerate optical parametric oscillation process in dual-pumped integrated microresonators. This process is sensitive to the power and frequency detunings of the pumps, and the threshold of this process depends on the spectral interval between pumps.
Laser Cooling and Spectroscopy of Atomic Si for Silicon-Based Quantum Applications
Authors: Sell Jerry , Gearba Alina , Dunsmore Anita , Mungan Carl , Angus Samuel , Romines Matthew , Siekert Brayden , Barberi Connor , Everett Noah , McLaughlin Carson , Knize Randy
Published: September 2023

Laser cooling of silicon could provide a new technique to manipulate individual Si isotopes. We perform laser spectroscopy on a Si atomic beam at 252 nm to measure the isotope shifts between 28
−
30Si. This article has been approved for public release: distribution unlimited (USAFA-DF-2023-61).
Rydberg Atoms In the Vicinity of an Optical Nanofiber
Authors: Stourm Erwan , Lepers Maxence , Robert Jacques , Chormaic Sìle Nic , Mølmer Klaus , Brion Étienne
Published: September 2023

We investigate how van der Waals interaction between Rydberg atoms is modified in the vicinity of an optical nanofiber with respect to free-space. This work paves the way to promising light-matter interfaces for quantum technologies.
Enabling Multi-Quantum Emitter based Quantum Networks: Spectrally Uniform and Indistinguishable On-Demand Photons from Spatially-Ordered Arrays
Authors: Huang Qi , Jordao Lucas , Zhang Jiefei , Madhukar Anupam
Published: September 2023

Unique spatially-ordered and spectrally-uniform solid state quantum emitter arrays show promise towards realizing multisource and multipartite quantum networks. Optical and structural characteristics of these quantum emitters in large (~10000) arrays are statistically sampled and discussed.
Interfacing On-Demand Quantum Dot Single Photons with a Resonant Atomic Quantum Memory
Authors: Cui Guo-Dong , Schweickert Lucas , Jöns Klaus D. , Namazi Mehdi , Trotta Rinaldo , Rastelli Armando , Zwiller Val , Figueroa Eden
Published: September 2023

We demonstrate coherent interactions between quantum dot single photons and a resonant 87Rb ensemble in the experiment and show an open quantum system analysis. These results could help build fast hybrid quantum networks.
Tree Cluster State Generation using Percolation
Authors: Patil Ashlesha , Guha Saikat
Published: September 2023

Tree codes are highly coveted states for error correction against photon loss in all-photonic architectures. The linear optical (LO) method to prepare these states results in huge resource overheads as the LO Bell state measurement used to generate the states is probabilistic in nature. In this paper, we propose a percolation-based method inspired by state preparation for measurement-based quantum computation to deterministically generate infinite tree states as long as photon loss probability is up to 12% if the LO BSM success probability is 75%. This method greatly reduces the resource overhead by getting rid of the need for multiplexing. Smaller tree states used for applications such as all-photonic quantum repeater can be constructed from the large tree by performing Pauli-Z measurements on some of its qubits.
Shaping Entangled Photons Through Multimode Fibers Using Mechanical Perturbations
Authors: Shekel Ronen , Lib Ohad , Gutiérrez-Cuevas Rodrigo , Popoff Sébastien M. , Bromberg Yaron
Published: September 2023

We demonstrate shaping of spatial correlations between entangled photons propagating through a multimode fiber via controlled mechanical perturbations of the fiber, enhancing the output correlations between pairs of photons by over an order of magnitude.
Generation of Time-bin GHZ States
Authors: Davis Samantha I. , Li Chang , Youssef Rahaf , Sinclair Neil , Valivarthi Raju , Spiropulu Maria
Published: September 2023

We detail our experiments towards generating GHZ states encoded into time-bin qubits using a switch. We present a theoretical model founded on phase-space techniques to corroborate our experimental findings.
Progress towards photon-photon nonlinearities based on multi-cavity quantum electrodynamics
Authors: Cui Guo-Dong , Demircan Samet , Veneros Leonardo Castillo , Bidle William , Figueroa Eden
Published: September 2023

Creating photon-photon nonlinearities is the key scientific challenge to converting current quantum networks into a user-defined quantum internet. We report on our progress building a universal multi-cavity quantum electrodynamics (mcQED) system.
Integrated Quantum Photonic Processors in a Femtosecond Laser Writing Platform
Authors: Ceccarelli Francesco , Pentangelo Ciro , Di Giano Niki , Albiero Riccardo , Gardina Marco , Arpe Riccardo , Corrielli Giacomo , Crespi Andrea , Osellame Roberto
Published: September 2023

Universal photonic processors are enabling novel experiments in quantum in-formation science. A femtosecond-laser-written 6-mode processor shows an unprecedented performance. The perspective of a remarkably higher complexity is discussed in light of the most recent results.
Topological photonic scattering in waveguide quantum electrodynamics
Authors: Ke Yongguan , Huang Jiaxuan , Liu Wenjie , Kivshar Yuri , Lee Chaohong
Published: September 2023

We introduce the topological inverse-band theory for photonic scattering in waveguide quantum electrodynamics. The winding number of photonic scattering depends on both the topological phase of inverse subradiant band and odevity of the cell number.
Boundary Scattering Tomography of Quantum Photonic Lattices
Authors: Saxena Abhi , Abbasgholinejad Erfan , Majumdar Arka , Trivedi Rahul
Published: September 2023

We present (a) a scheme for tomography of Kerr-nonlinear quantum photonic lattice via measurements performed only on the perimeter of the lattice and (b) a protocol that uses Fock state-scattering to quadratically enhance the precision of the Hamiltonian parameters in the scheme.
Resolving High Order Tensor Interactions in C60 Fullerenes
Authors: Liu Lee R. , Rosenberg Dina , Changala P. Bryan , Nesbitt David J. , Tscherbul Timur , Ye Jun
Published: September 2023

Laser cooling, trapping, and coherent control of ultracold atoms and molecules has afforded the possibility of assembling pristine and highly tunable quantum many body systems. This relies on excellent experimental control over ultracold atoms or molecules and their interactions. Another paradigm we are exploring is to treat single polyatomic molecules as inherently quantum many body systems due to their strongly interacting constituent nuclei and electrons. In addition, a diverse array of intramolecular coupling mechanisms arise "for free" in polyatomic molecules, such as rovibronic coupling, hyperfine-rotation coupling, covalent bonds between atoms, and nuclear and electron exchange statistics. The key to unlock these phenomena in the lab is quantum-state resolved spectroscopy, which relaxes the requirements for experimental control. However, in general, molecular complexity comes at the price of spectral broadening and congestion. C60, with its rigid molecular cage structure and high degree of symmetry, is a notable exception, enabling quantum state resolved spectroscopy in an unusually large polyatomic molecule. We present an experimental rovibrational spectrum of gas phase C60 fullerene, obtained by QCL (Quantum Cascade Laser) cavity enhanced absorption spectroscopy.
Quantum State Tomography in FPGA
Authors: Miller Nathan Eli , Mukhopadhyay Saibal
Published: September 2023

We demonstrate an efficient solution for quantum state tomography implemented on FPGA. By observing the closed-form solution for complete measurement sets, we create a simple, accurate, reconfigurable solution for multi-qubit quantum states.
Recovery With Incomplete Knowledge: Fundamental Bounds on Real-Time Quantum Memories
Authors: Danageozian Arshag
Published: September 2023

Noise drift in quantum hardware is an important obstacle for scalable quantum computation, e.g. when performing complex quantum algorithms with runtimes exeeding the characteristic time of the noise drift. I address this problem by proposing drift-adaptive quantum error correction, and prove metrological bounds in its operation fidelity.
Strong Photon-Magnon Coupling in the Metasurface Based on a System of Coupled Anapole Resonators
Authors: Girich A.A. , Polevoy S.Yu. , Tarapov S.I. , Vakula A.S. , Nedukh S.V. , Sova K. Yu.
Published: September 2023

We have numerically investigated the photon-magnon coupling in the system of coupled anapole resonators (metasurface). A strong spin-number-normalized coupling strength (single spin-photon coupling)
g
e
f
f
/2πN was reached up to 0.276 Hz (g
eff
/2π = 310 MHz) at a frequency of 9.7 GHz compared to the spin-number-normalized coupling strength in a single splitring resonator (SRR)
g
e
f
f
/2πN=0.097 Hz(g
e
f
f
/2π=270MHz).
Development of an Experimentally-Inspired Quantum Internet Stack
Authors: Castillo-Veneros Leonardo , Du Dounan , Cottrill Dillion , Cui Guo-Dong , Katramatos Dimitrios , Martínez-Rincón Julián , Stankus Paul , Figueroa Eden
Published: September 2023

We present a bottom-up design of a Quantum Internet stack. Our concept is based on a quantum/classical approach combining three optical networks: quantum, quantum-enabling, and classical dictating a tripartite stack with individual layers matching each network’s functionality but acting as a whole to enable the overall network operations.
Photon-Magnon Coupling in the Chain of Periodically Located H-Shape Resonators
Authors: Girich A.A. , Polevoy S.Yu. , Tarapov S.I. , Vakula A.S. , Nedukh S.V. , Sova K.Yu.
Published: September 2023

We have numerically investigated the photon-magnon coupling in the chain of 10 periodically located H-shape resonators. A strong coupling strength was reached up to geff/2π = 329 MHz at the frequency of 6.3 GHz. The influence of the number of resonators in the chain on the coupling strength value is analyzed.
Confidence-Interval Construction with Non-I.I.D. Spot-Checking Trials & its Application in Quantum Information
Authors: Zhang Yanbao , Seshadri Akshay , Knill Emanuel
Published: September 2023

We develop a method to estimate the sum of conditional means of a sequence of random variables given our access to only a subsequence by spot-checking. The method works with non-independent-and-identically-distributed (non-i.i.d.) random variables and can be applied for certifying ongoing quantum information tasks.
Realization of a Modular Super-Additive Optical Receiver
Authors: Postlewaite Jack , Cui Chaohan , Choura Samar , Wu YiYun , Saif Babak , Fan Linran , Guha Saikat
Published: September 2023

We develop a model for physical non-idealities and experimental realization of an all optical joint detection receiver to convert temporal Hadamard encoded BPSK code-words into PPM to achieve super-additive capacity in the low photon regime.
Chip Based Controllable Entanglement Distribution Network
Authors: Liu Dongning , Liu Jingyuan , Ren Xiaosong , Feng Xue , Liu Fang , Cui Kaiyu , Huang Yidong , Zhang Wei
Published: September 2023

In this work, we demonstrate a controllable entanglement distribution network chip based on silicon photonics with 3 subnets and 24 users and present its ability of reconfigurable network topology experimentally.
Point-to-multipoint quantum key distribution against two-mode collective attack
Authors: Bian Yiming , Mi Jiale , Zhang Yichen , Yu Song
Published: September 2023

We report the security analysis of point-to-multipoint quantum key distribution against two-mode collective attacks, showing the stability of the protocol facing all kinds of two-mode attack strategies.
Experimental Demonstration of Anti-interference Quantum Lidar
Authors: Joshi Binod , Shih Yanhua
Published: September 2023

We report a proof-of-principle experimental demonstration of an Anti-interference Quantum Lidar. The achievement of interference-free centimeter resolution of positioning at 500 meter distance demonstrated the possibility of quantum lidar for interference-free high accuracy nonlocal positioning.
Effect of polarization mismatch on differential phase based measurement device independent quantum key distribution
Authors: Sharma Nilesh , Radhakrishnan Chandrashekar , Prabhakar Anil
Published: September 2023

The effect of polarization mismatched coherent pulses on the key rates of differential phase based MDI QKD is investigated. It is found that this protocol can withstand a polarization mismatch of at most 11°.
Maximally Entangled State Generation Between Atomic Ensembles Using Adaptive Quantum Nondemolition Measurements
Authors: Chaudhary Manish , Byrnes Tim
Published: September 2023

We develop a scheme to prepare a macroscopic maximally entangled state (MMES) between two atomic ensembles. The quantum state of system is evolved using a sequence of quantum nondemolition (QND) measurements followed by adaptive unitaries in z and x spin basis alternately. This procedure is repeated such that the state converges deterministically towards the MMES.
Entangled Cooperative States of Ion Pairs in Nd3+ Doped Crystals with Fluorite Structure for CNOT Quantum Gate
Authors: Orlovskii Yu. , Vagapova E. , Dolgov L. , Vinogradova E. , Peet V. , Boltrushko V. , Hizhnyakov V.
Published: September 2023

One- and two-exciton cooperative states in ion pairs in Nd3+ doped CdF2, CaF2, and SrF2 crystals are studied. Strong resonance electrical exchange interaction with spin-flip determines the luminescence excitation spectra of the one-exciton entangled state.
Cluster States Generation with Quantum Metasurface
Authors: Levin Yehonatan , Israeli Uri , Bekenstein Rivka
Published: September 2023

We analyze an implementation of cluster states generation protocols by employing quantum metasurfaces made out of sub-wavelength atomic arrays, including fundamental quantum logic gates useful for general quantum computation and communication purposes.
High-dimensional quantum fingerprinting
Authors: Cabrejo-Ponce Meritxell , Chen Yuanyuan , Chen Lixiang , Steinlechner Fabian
Published: September 2023

We propose a novel way to generate and distribute broadband photons and
thus high-dimensional frequency-path entangled states, ideal for
protocols such as quantum fingerprinting. For this purpose, the HOM
interference is explored.
Spin Squeezing-Enhanced Stability in an Optical Lattice Clock Comparison
Authors: Miklos Maya , Tso Yee Ming , Robinson John M. , Hur Joonseok , Thompson James K. , Ye Jun
Published: September 2023

We perform a self-synchronous clock comparison between two spin-squeezed ensembles in a strontium optical lattice clock to directly measure 2.0(3) dB of metrological gain beyond quantum projection noise-limited operation, averaging down to the 10
−
17 level.
Implementation of a Vector Magnetometer using Synchronous Coherent Population Trapping and Feedback Compensated Field Coil
Authors: Pati Gour , Tripathi Renu , Pulido Mauricio
Published: September 2023

We demonstrate a single-shot measurement of magnetic field components in a vector magnetometer using high-contrast resonance produced by synchronous coherent population trapping and implementing feedback compensated servo mechanism for a three-axis field coil.
Building a Matter-Wave Interferometer in a 1D Optical Lattice via Machine Learning Techniques
Authors: LeDesma Catie , Mehling Kendall , Shao Jieqiu , Nicotra Marco M. , Holland Murray , Anderson Dana
Published: September 2023

The creation of a 1D matter-wave interferometer can be achieved by utilizing ultracold atoms loaded into an optical lattice. By shaking the lattice via either phase or frequency modulation, the traditional steps of interferometry- effectively splitting, propagating, reflecting, again propagating and then recombining the atomic wavefunction- can be implemented, allowing for the sensing of inertial signals. This approach is interesting, since the atoms can be supported against external forces and perturbations, and the system can be completely reconfigurable on-the-fly for a new design goal. We report on experimental results in which atoms are cooled into a dipole trap and subsequently loaded into an optical lattice. Shaking protocols for obtaining interferometry steps are derived via machine learning and quantum optimal control methods. We report experimental progress in realizing a shaken lattice interferometer and its sensitivity to an applied acceleration signal along with the possibility of tailoring the signal to specific scenarios. Additionally, closed loop learning from the experiment to improve signal sensitivity is explored and demonstrated.
Operational utilization of quantum gravity sensors based on laser-cooled atoms
Authors: Rosenbusch Peter , Ménoret Vincent , Majek Cédric , Guéridon Mathieu , Tardif Fabrice , Desruelle Bruno
Published: September 2023

Exail's Absolute Quantum Gravimeter measures the earth attraction to 10-9 g. Cutting-edge optics components and sub-systems achieve robustness, size and autonomy fit for field-deployment. The intelligent laser system based on frequency-doubled telecom lasers is a cornerstone. We will present a 9-months campaign on Mt Etna, Sicily, an active volcano.
Visible Light Photonics for Atomic and Quantum Sensing and Computation
Authors: Blumenthal Daniel J. , Chauhan Nitesh , Isichenko Andrei , Wang Jiawei , Bose Debapam , Liu Kaikai , Harrington Mark W.
Published: September 2023

We review the latest advances in visible light ultra-low-loss silicon nitride photonic integration and the potential to scale complexity and reliability of atom and quantum systems as well as reduce system size, weight and cost.
Dark Current and Single Photon Detection by 1550 nm Avalanche Photodiodes: Dead Time Corrected Probability Distributions
Authors: Menkart Nicole , Hart Joseph D. , Murphy Thomas E. , Roy Rajarshi
Published: September 2023

We present the first application of the Mandel algorithm to real data from single-photon avalanche photodiodes (SPAD) to produce dead-time corrected probability distributions that are Poisson in nature to examine novel light sources.
Towards Transverse-Mode Entanglement Generation In Few-Mode Optical Fiber
Authors: Kim Dong Beom , U’Ren Alfred B. , Garay-Palmett Karina , Lorenz Virginia O.
Published: September 2023

We present progress towards generating transverse-mode-entangled photon-pair states in few-mode birefringent optical fiber using spontaneous four-wave mixing. We also describe how transverse-mode quantum state tomography is employed to verify such entanglement.
Weak measurements under dissipation
Authors: Ferraz Lorena Ballesteros , Martin John , Caudano Yves
Published: September 2023

We study weak measurements under the influence of dissipation. Even though dissipation harms the anomalous properties of the weak value, we found specific setups in which extracting information from the weak value is feasible.
Native Oxide Formation in NbTiN Thin Films for Traveling-Wave Superconducting Nanostripe Single-Photon Detectors
Authors: Nazib Sami A. , Hutchins-Delgado Troy A. , Reymatias Mark V. , Lee Hosuk , Jamil Erum , Smolyakov Gennady A. , Lu Tzu-Ming , Ivanov Sergei A. , Nogan John , Komissarov Ivan , Sobolewski Roman , Osiński Marek
Published: September 2023

We report on a systematic study of native oxide formation in films of NbTiN deposited using a physical vapor deposition process on silicon nitride/silicon dioxide dielectrics, intended for fabrication of silicon quantum photonic integrated circuits.
A quantum-assisted master clock in the sky – sub-nanosecond quantum clock synchronization at global scales
Authors: Ducoing Sage , Haldar Stav , Troupe James E. , Agullo Ivan
Published: September 2023

We propose a quantum-assisted network of low-SWaP satellite-based clocks forming a master clock in the sky. Synchronization amongst satellites and between satellite-ground station pairs is done through a quantum clock synchronization protocol. This pro-vides continuous sub-nanosecond to picosecond precision over global scales (better than GPS).
Characterization of the Polarization Fluctuations in Gain-Switched Vertical-Cavity Surface-Emitting Lasers for Quantum Random-Number Generation
Authors: Quirce Ana , Valle Angel , Valle-Miñón Marcos , Gutiérrez Jaime
Published: September 2023

We characterize a quantum random number generator based on the excitation of the linearly polarized modes of a gain-switched vertical-cavity surface-emitting laser. We find good agreement between our experiments and simulations.
Development of a 20km Free Space Optical Link for Single-Photon Transmission
Authors: Gokhale Rishikesh , Haupt Justine , Figueroa-Barragan Eden , Stankus Paul
Published: September 2023

Presenting the development of the prototype for a 20km Free space quantum optical link between Stony Brook University and Brookhaven National Laboratory and summary of the future efforts and improvements to the experimental setup.
Time-bin Encoded Photons over Multi-mode Channels: Advances on Quantum Communications and Sensing Over Free-space Channels
Authors: Jennewein Thomas , Tannous Ramy , Wu Wilson , Sinar Dogan , Vinet Stéphane , Kirillova Alexandra , Sajeed Shihan , Ling Alexander , Perumangatt Chithrabhanu
Published: September 2023

The recent solution to spatial mode fluctuation using imaging interferometers make time-bin quantum signals viable for free-space applications. We highlight recent experimental advances including a plug-play QKD system, an imaging quantum LIDAR, that illustrate the exciting potential for free-space applications using time-bin encoding.
Ferroelectric AlScN as an Extreme Nonlinear Quantum Material beyond LiNbO3
Authors: Liu Jiangnan , Thériault Pierre-Luc , Wu Wade , Wen Qiannan , Kéna-Cohen Stéphane , Kira Mack , Mi Zetian
Published: September 2023

Al(Sc)N-based quantum heterostructures exhibit over one order of magnitude enhancement of electro-optic coefficient and second-order susceptibility compared to AlN. Its ultrawide bandgap and extreme stability make it appealing as next-generation nonlinear quantum material beyond LiNbO3.
Two-Stage Quantum Frequency Conversion for SnV-resonant Photons to the Telecom C-Band
Authors: Lindler David , Bauer Tobias , Schäfer Marlon , Becher Christoph
Published: September 2023

We present a quantum frequency conversion scheme for photons resonat with SnV-centers in diamond to the telecom C-band, based on two-stage difference frequency generation in PPLN waveguides, to reduce noise at the target wavelength.
Photonic Interference Beyond Two Modes
Authors: Oliver Richard , Blau Miri , Ji Xingchen , Gutiérrez-Jáuregui Ricardo , Asenjo-Garcia Ana , Lipson Michal , Gaeta Alexander L.
Published: September 2023

We propose multipartite Bragg-scattering to perform all-to-all transformation among N frequency modes, realizing a bosonic N-level system. We demonstrate the N = 3 case illustrating a pathway towards scalability for frequency-domain optical quantum information systems.
Storage and Retrieval of Light Using an Ultra-Coherent Membrane Resonator
Authors: Kristensen Mads Bjerregaard , Kralj Nenad , Langman Eric , Schliesser Albert
Published: September 2023

Soft-clamped and dissipation-diluted membrane resonators are promising quantum memory candidates, thanks to their long coherence time. In a pulsed cavity optomechanics experiment, we study storage and retrieval of optical information from such a resonator.
Single-photon synchronization with a room-temperature atomic quantum memory
Authors: Davidson Omri , Yogev Ohad , Poem Eilon , Firstenberg Ofer
Published: September 2023

Single-photon synchronization could prove essential for future quantum optical networks. We demonstrate synchronization of photon pairs with high rate and low noise using a room-temperature atomic quantum memory and compatible single-photon source.
Bell State Measurement Between Photonic Qubits Stored in Two Independent Room Temperature Quantum Memories
Authors: Wallace Chase , Gera Sonali , Figueroa Eden
Published: September 2023

We demonstrate the feasibility of entanglement swapping after storage by performing Bell-state measurements on polarization qubits stored in two independent room-temperature quantum memories, a crucial step in developing a quantum repeater.
Portable swappable polarization-entanglement sources
Authors: Kouadou Tiphaine , Diaz David , Kwiat Paul G.
Published: September 2023

We present a dual source of swappable entanglement in the near infrared for local quantum networking and free-space quantum links. Built on portable platforms, the polarization-entangled photons are generated via spontaneous parametric down conversion in two adjacent fiber-pigtailed type-II PPKTP waveguides.
Resolving Photon Numbers Using Ultra-High-Resolution Timing of a Single Conventional Superconducting Nanowire Detector
Authors: Sauer Gregor , Kolarczik Mirco , Gomez Rodrigo , Fedder Helmut , Steinlechner Fabian
Published: September 2023

We show how ultra-high-resolution timing measurements of the rising and falling edges of electrical pulses generated from conventional superconducting nanowire detectors enable to distinguish photon numbers of up to 5 in a single-shot measurement.
Scientific CMOS (sCMOS) Camera Capabilities with a Focus on Quantum Applications
Authors: Dhimitri Klea , Fullerton Stephanie , Coyle Brad , Bennett Keith , Miura Taiki , Higuchi Takafumi , Maruno Tadahashi
Published: September 2023

The talk will provide an overview on Hamamatsu’s latest ORCA-Quest camera with photon number resolving capability. We discuss the role of sCMOS cameras in emerging quantum applications ranging from quantum optics to neutral atoms.
Sharing results with participants (and community) in malaria related research: Perspectives and experience from researchers
Authors: Weston Sophie , Adhkari Bipin , Thriemer Kamala
Published: September 2023

Results-sharing with participants or their communities after the completion of research is an essential element of ethical research. The main objective of this study was to identify and document current practice of trial result dissemination, to explore attitudes among trialists towards result dissemination and to better understand previous experiences and barriers to returning results to participants. This mixed-methods study used a sequential exploratory design with two phases: i) an initial qualitative phase to explore the topic and to inform the quantitative data collection, ii) a quantitative survey. Findings from the survey and interviews were triangulated and presented to a network of clinical malaria researchers for validation. A total of 11 semi-structured interviews (SSIs) were conducted using an interview guide. The quantitative survey had a response rate of 19.9% (42/211). Disseminating results to participants after clinical trials was deemed critical for ethical malaria related research, with 38.1% indicating it as extremely important and 45.2% rating it as mostly important. Most respondents referred to the dissemination of results to policymakers and wider stakeholders as important aspects of research translation. The practice of patient or community engagement was prioritized in the pre-trial period and during the trial for obvious instrumental goals of improving retention, coverage and adherence, but much less priority was given to the post-trial period. The main reason for poor dissemination practice was the notion that the time lag between study participation and the availability of results was too long (42.4%). Other reasons included the assumption that the community was not interested (36.4%), and financial restraints (9.1%). The rich qualitative data revealed detailed accounts of operational, cultural, educational and economic aspects that pose further barriers to results-sharing, including limited knowledge about best practice. Better planning which includes adequate financial resourcing is required for meaningful dissemination of results to study participants. Improved institutional guidance and more stringent requirements by funders could support researchers who are generally interested and willing to complete the process. Best practice methods to conduct such dissemination remains to be explored.
King’s Sarcoidosis Questionnaire (KSQ) – Validation study in Serbian speaking population of sarcoidosis patients
Authors: Stjepanovic Mihailo , Mihailovic-Vucinic Violeta , Gvozdenovic Branislav S. , Milin-Lazovic Jelena , Belic Slobodan , Djurdjevic Natasa , Maric Nikola , Golubovic Aleksa
Published: September 2023

Introduction

Sarcoidosis is a multiorgan, multisystem chronic disease of unknown etiology and unpredictable course. Health status is reduced in sarcoidosis and assessing it is a difficult multitask effort due to many faces this disease might have. Recently, a new questionnaire for assessing health status in sarcoidosis was developed by a group of authors from England–King’s Sarcoidosis Questionnaire (KSQ). The benefit of KSQ is the ability to develop the best care plan for the patient, as well as to differentiate the efficacy of the administered treatment.

Objective

The aim of this study was to validate the KSQ in Serbian speaking population of sarcoidosis patients. The test itself is a modular, multi-organ health status measure for patients with sarcoidosis for use in clinic and the evaluation of therapies. The correlation of KSQ with different clinical course of sarcoidosis (acute vs chronic disease) and with the clinical outcome status (COS) in sarcoidosis was also investigated.

Methods

A total of 159 biopsy positive sarcoidosis patients participated in this study. The average age of the participants was 49.67, majority was female (67.3%) and majority had only pulmonary form of sarcoidosis (71.7%). KSQ ‐ new disease-specific health status instrument, was compared with 5 other already existing instruments already used and validated in sarcoidosis (Saint George Respiratory Questionnaire- SGRQ, Daily Activity List -DAL, Fatigue Assessment Scale- FAS, Medical Research Council dyspnea scale–MRC, Borg Dyspnea Scale and 15D as general questionnaire.

Results

KSQ has significant correlation with other quality of life questionnaires already used in sarcoidosis. Translated version of KSQ shows significant internal reliability, similar to the original KSQ. Serbian version of KSQ has significant correlation with different clinical course of sarcoidosis and with COS as well. The translated version of KSQ is reliable sarcoidosis specific instrument for assessing health status in these patients.
KOMUNIKASI ANTAR PEMAKAI CDS/ISIS
Authors: Permadi Agus , Priyocahyono Eko S.
Published: September 2023

Tabel definisi ruas (disingkat TDR) adalah tabel yang berisi semua ruas dari sebuah pangkalan data disertai sifat-sifat dan parameternya.
SOCIAL NETWORK ANALYSIS OF MANGOSTEEN TECHNOLOGY DEVELOPMENT CLUSTER IN INDONESIA BASED ON PATENT DOCUMENT APPLICATION
Authors: Yaman Aris , Kartika Yulia Aris , Tsurayya Silmi , Ankafia Adi , Manik Lindung Parningotan , Akbar Zaenal , Indrawati Ariani
Published: September 2023

Functional food consumption is on the rise and has a significant market value. Indonesia is one of the largest mangosteens (a functional food source commodity) exporting countries globally. Unfortunately, the mangosteen export is still in fresh fruit condition, not in other forms that have a higher value. Policymakers need to identify critical technologies in the development of mangosteen commodities. This study uses a patent-based technology document analysis method to map the potential of technology. The data used is patent data that has been registered with the Indonesian Patent Office and the WIPO Patentscope database. The analysis was carried out using computational methods, namely a Social Network Analysis with the Girvan-Newman algorithm. According to the study's findings based on global patent data, there are three major technology clusters used in mangosteen patents: 1) 24 percent for technology related to developing preparations for medical, dental, or toilet purposes (A61K). 2) 20% for food and food ingredient technology or non-alcoholic beverages (A23L). The remaining 43 percent is spread across many other IPC technology codes, including technology related to drug preparations (A61P). It is in line with the results of patent data analysis in Indonesia, which also shows that there are three dominant technology groups applied to mangosteen in Indonesia, namely 1) Technology related to the development of medical, dental, and toilet technology (A61K) of 47 percent; 2) Technology related to food and food ingredients or non-alcoholic drinks (A23L) by 18 percent, and 3) Technology related to drug preparations (A61P) by 13 percent and the remaining 22 percent spread over several other IPC technology codes. According to Social Network Analysis, the world's dominant technology cluster for mangosteen is technology related to the development of food and food ingredients or non-alcoholic beverages (A23L). The technology associated with medical, dental, and toilet technology is the most important mangosteen technology cluster in Indonesia (A61K).
Effect of arginine-phosphate addition on early survival and growth of Scots pine, Norway spruce and silver birch
Authors: Häggström Bodil , Lutter Reimo , Lundmark Tomas , Sjödin Fredrik , Nordin Annika
Published: September 2023

Applying arginine-phosphate (AP) to tree seedlings at planting is a novel silvicultural practice in Northern Europe to improve the success of forest regeneration. We present three case-studies of the potential advantages of adding AP at planting on the establishment and damage susceptibility of seedlings in pure and mixed plantings of Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies (L.) H. Karst. ) and silver birch (Betula pendula Roth) over two years in the field. Location of study sites were in southern (S), northeastern (NE) and northwestern (NW) Sweden. The main agents of damage were pine weevil (Hylobius abietis L.) on conifers at the south site, browsing of birch at all sites and browsing/other top damage to conifers at the north sites. The effect of adding AP varied between the sites. It was positive for survival of pine at site S, despite considerable damage by pine weevil. However, at the S site more of the surviving spruce and birch were browsed when treated with AP. At the NE site AP-treatment had positive effects on conifer growth. At the NW site adding AP positively affected survival and growth of all three species, and AP-treated seedlings of all species were less browsed than untreated seedlings. AP treatment presents a potential tool to improve the success of forest regeneration, especially when establishing pine stands in south Sweden.
Antibiotic Sales, before and after Implementation of a Veterinarian Prescription System in Food-producing Animals
Authors:   Crisis and Emergency Management: Theory and Praxis, Park Ji Young , Kwon Kyeng Hee
Published: September 2023

A veterinarian prescription system (VPS) was implemented in 2013 to reduce the use of antibiotics in food-producing animals in South Korea. To understand effects of VPS on sales of antibiotics for food-producing animals, this study compared average sales of antibiotics for seven years before (2006-2012) and after (2014-2020) implementing VPS using population correction unit (PCU). As a result, average sales (242 mg/PCU) after implementing VPS decreased by 36% compared to those (380 mg/PCU) before implementing it. In addition, average sales of HP-CIAs after implementing VPS decreased by 14% from 51.4 mg/PCU to 44.2 mg/PCU compared to those before implementing it. Although average sales of total antibiotics and HP-CIAs for food-producing animals decreased after implementing VPS compared to those before implementing it, they were still higher than those in Europe. Therefore, it is necessary to strengthen VPS continuously to reduce the use of antibiotics for food-producing animals in the future.
Thinning Effect on Fuel Load and Crown Fire Hazard: A Case Study of Pinus Densiflora in Goseong, Gangwon Province
Authors:   Crisis and Emergency Management: Theory and Praxis, Lee Sun Joo , Kwon Chun Geun , Seo Kyung Won , Lee Young Jin , Kim Sung Yong
Published: September 2023

This study was conducted to analyze the effect of forest management on forest fire fuel and forest fire spread. For this purpose, a wildfire prevention forest study site(intensity of 40%, 20%, control) was established in the Goseong, Gangwon province that is vulnerable to wildfires, and regular monitoring investigations were conducted. As a result of this study, the crown bulk density is thinning 40% 0.263kg/m3, thinning 20% 0.417kg/m3, and 0.530kg/m3 in the control, the lower the amount of crown fuel load. In high-strength treatment areas, the amount of shrub fuel composed of fire-resistant tree species increased by more than 17.6% compared to the first year as the amount of light transmission increased due to thinning. It is expected that this study can be used in various research such as forest fire risk assessment by forest management and creation of fire-resistant forest zones.
A Study of Emergency Medical Service Vulnerable Areas Using GIS Service Area Analysis
Authors:   Crisis and Emergency Management: Theory and Praxis, Joo Hyun Tae , Park Keun Oh
Published: September 2023

The purpose of this study was to identify underserved emergency medical service regions in Incheon Metropolitan City using service area analysis, an expansion module of the GIS network analysis technique, for emergency medical facilities and regional districts in Incheon Metropolitan City and to determine the policy implications of these findings. The results of the analysis confirmed that, in most areas in Incheon Metropolitan City, medical facilities could be accessed within 10 minutes. Second, to overcome the limitations of previous spatial analysis studies, the service beyond Incheon Metropolitan City was analyzed, including emergency medical facilities in surrounding service areas such as Bucheon and Siheung. It can be concluded that policies for establishing medical services and public service facilities in areas connecting to neighboring cities, such as Incheon, should consider not only Incheon Metropolitan City but also the surrounding areas.
The Effects of Flipped Learning in Core Nursing Skill Education in the COVID-19
Authors:   Crisis and Emergency Management: Theory and Praxis, Jung Sungwon
Published: September 2023

The purpose of this study was to examine the effects of on-tact FLPE(Flipped Learning Practical Education) on SM(Satisfaction with Major), CS(Core nursing Skills), ASE(Academic Self-Efficacy), and CP(Clinical Performance). The research design was one group pre-posttest and participants were 65 fourth-year nursing students. Data were collected from 25/02 to 03/04 2022. The data were analyzed by paired t-test, pearson’s correlation coefficient method using SPSS 25.0 program. After participating in FLPE, SM (t=.3.40, p<.001), CS (t=-13.93, p<.001), and CP (t=-7.99, p<.001) were significantly improved. There was a static correlation between SM and CS (p=.016), SM and CP (p<.001), and CS and CP (p<.001). The results suggested that FLPE was an effective education method to improve SM, CS and CP for nursing students during the COVID-19 pandemic period. Therefore, it is essential to actively apply FLPE with regard to nursing education.
EBV and oral risk habits among a group of male patients fibroepithelial polyp (FEP)in Sri Lanka
Authors: Perera Manosha
Published: September 2023

Epstein- Barr virus (EBV) is the causative agent of infectious mononucleosis ("mono" or "glandular fever"). Xenobiotics such as tobacco smoke as cofactors which promote EBV replication promoting either the maintenance of viral genomes or lytic activation when the oncogenesis is progressed. This pilot study was aimed to find out EBV positivity and its association with risk habits among a group of male patients with Fibro Epithelial Polyps (FEP) in Sri Lanka. The sub sample consisted of 23 FEP male patients selected from 134 clinically diagnosed controls with benign oral mucosal lesions. Excisional biopsies of FEP s were stored as frozen tissues at -80
0 C. DNA was extracted from frozen specimens using Gentra Puregene Tissue kit (Qiagen, Germany), solid tissue protocol. Subsequently, real time PCR was performed to detect EBV. A pre-tested interviewer administered questionnaire was used for data collection on oral risk habits: betel quid chewing, tobacco smoking and alcohol consumption (current status, duration and types of all 3 habits). These data were entered and analysed using SPSS-21 Statistical Package. Descriptive statistics and Fisher’s exact test were used to compare groups ((cell counts <5). EBV positivity of the sample was 56.5%. There was a statistically significant association between EBV positivity and type of alcohol consumed. However, frequency of alcohol consumption was not associated with EBV status. Similarly betel chewing and smoking habits did not show associations with EBV status. EBV sero prevalence could be influenced by oral risk habits. Hence, further studies are recommended with large sample sizes.