Measurement-induced entanglement and teleportation on a noisy quantum processor
Creators: name: Hoke, Jesse C.
name: Ippoliti, Matteo
name: Rosenberg, Eliott
name: Abanin, Dmitry
name: Acharya, Rajeev
name: Andersen, Trond I.
name: Ansmann, Markus
name: Arute, Frank
name: Arya, Kunal
name: Asfaw, Abraham
name: Atalaya, Juan
name: Bardin, Joseph C.
name: Bengtsson, Andreas
name: Bortoli, Gina
name: Bourassa, Alexandre
name: Bovaird, Jenna
name: Brill, Leon
name: Broughton, Michael
name: Buckley, Bob B.
name: Buell, David A.
name: Burger, Tim
name: Burkett, Brian
name: Bushnell, Nicholas
name: Chen, Zijun
name: Chiaro, Ben
name: Chik, Desmond
name: Cogan, Josh
name: Collins, Roberto
name: Conner, Paul
name: Courtney, William
name: Crook, Alexander L.
name: Curtin, Ben
name: Dau, Alejandro Grajales
name: Debroy, Dripto M.
name: Barba, Alexander Del Toro
name: Demura, Sean
name: Di Paolo, Augustin
name: Drozdov, Ilya K.
name: Dunsworth, Andrew
name: Eppens, Daniel
name: Erickson, Catherine
name: Farhi, Edward
name: Fatemi, Reza
name: Ferreira, Vinicius S.
name: Burgos, Leslie Flores
name: Forati, Ebrahim
name: Fowler, Austin G.
name: Foxen, Brooks
name: Giang, William
name: Gidney, Craig
name: Gilboa, Dar
name: Giustina, Marissa
name: Gosula, Raja
name: Gross, Jonathan A.
name: Habegger, Steve
name: Hamilton, Michael C.
name: Hansen, Monica
name: Harrigan, Matthew P.
name: Harrington, Sean D.
name: Heu, Paula
name: Hoffmann, Markus R.
name: Hong, Sabrina
name: Huang, Trent
name: Huff, Ashley
name: Huggins, William J.
name: Isakov, Sergei V.
name: Iveland, Justin
name: Jeffrey, Evan
name: Jones, Cody
name: Juhas, Pavol
name: Kafri, Dvir
name: Kechedzhi, Kostyantyn
name: Khattar, Tanuj
name: Khezri, Mostafa
name: Kieferová, Mária
name: Kim, Seon
name: Kitaev, Alexei
name: Klimov, Paul V.
name: Klots, Andrey R.
name: Korotkov, Alexander N.
name: Kostritsa, Fedor
name: Kreikebaum, John Mark
name: Landhuis, David
name: Laptev, Pavel
name: Lau, Kim-Ming
name: Laws, Lily
name: Lee, Joonho
name: Lee, Kenny W.
name: Lensky, Yuri D.
name: Lester, Brian J.
name: Lill, Alexander T.
name: Liu, Wayne
name: Locharla, Aditya
name: Martin, Orion
name: McClean, Jarrod R.
name: McEwen, Matt
name: Miao, Kevin C.
name: Mieszala, Amanda
name: Montazeri, Shirin
name: Morvan, Alexis
name: Movassagh, Ramis
name: Mruczkiewicz, Wojciech
name: Neeley, Matthew
name: Neill, Charles
name: Nersisyan, Ani
name: Newman, Michael
name: Ng, Jiun H.
name: Nguyen, Anthony
name: Nguyen, Murray
name: Niu, Murphy Yuezhen
name: O'Brien, Tom E.
name: Omonije, Seun
name: Opremcak, Alex
name: Petukhov, Andre
name: Potter, Rebecca
name: Pryadko, Leonid P.
name: Quintana, Chris
name: Rocque, Charles
name: Rubin, Nicholas C.
name: Saei, Negar
name: Sank, Daniel
name: Sankaragomathi, Kannan
name: Satzinger, Kevin J.
name: Schurkus, Henry F.
name: Schuster, Christopher
name: Shearn, Michael J.
name: Shorter, Aaron
name: Shutty, Noah
name: Shvarts, Vlad
name: Skruzny, Jindra
name: Smith, W. Clarke
name: Somma, Rolando D.
name: Sterling, George
name: Strain, Douglas
name: Szalay, Marco
name: Torres, Alfredo
name: Vidal, Guifre
name: Villalonga, Benjamin
name: Heidweiller, Catherine Vollgraff
name: White, Ted
name: Woo, Bryan W. K.
name: Xing, Cheng
name: Yao, Z. Jamie.
name: Yeh, Ping
name: Yoo, Juhwan
name: Young, Grayson
name: Zalcman, Adam
name: Zhang, Yaxing
name: Zhu, Ningfeng
name: Zobrist, Nicholas
name: Neven, Harmut
name: Babbush, Ryan
name: Bacon, Dave
name: Boixo, Sergio
name: Hilton, Jeremy
name: Lucero, Erik
name: Megrant, Anthony
name: Kelly, Julian
name: Chen, Yu
name: Smelyanskiy, Vadim
name: Mi, Xiao
name: Khemani, Vedika
name: Roushan, Pedram
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Measurement has a special role in quantum theory: by collapsing the wavefunction it can enable phenomena such as teleportation and thereby alter the "arrow of time" that constrains unitary evolution. When integrated in many-body dynamics, measurements can lead to emergent patterns of quantum information in space-time that go beyond established paradigms for characterizing phases, either in or out of equilibrium. On present-day NISQ processors, the experimental realization of this physics is challenging due to noise, hardware limitations, and the stochastic nature of quantum measurement. Here we address each of these experimental challenges and investigate measurement-induced quantum information phases on up to 70 superconducting qubits. By leveraging the interchangeability of space and time, we use a duality mapping, to avoid mid-circuit measurement and access different manifestations of the underlying phases -- from entanglement scaling to measurement-induced teleportation -- in a unified way. We obtain finite-size signatures of a phase transition with a decoding protocol that correlates the experimental measurement record with classical simulation data. The phases display sharply different sensitivity to noise, which we exploit to turn an inherent hardware limitation into a useful diagnostic. Our work demonstrates an approach to realize measurement-induced physics at scales that are at the limits of current NISQ processors.