Erasure qubits - Aleksander Kubica | TQC 2023
Channel: Squid: Schools for Quantum Information Development
Date: 2023-08-23

Aleksander Kubica 
Erasure qubits 

We address a question of leveraging the noise bias to simplify quantum error correction (QEC) protocols and improve their performance. We focus on the previously unexplored bias between the amplitude damping and dephasing errors that is fundamental to many quantum technologies. We propose a simple scheme to convert amplitude damping errors into erasure errors. Despite its simplicity, our scheme significantly improves the performance of QEC protocols and can be extended to handle leakage errors. Importantly, we provide two concrete realizations with superconducting circuits, analyzing their performance both from the analytical and numerical perspective. Our results provide a breakthrough shift in the current architecture paradigm. Namely, they suggest that engineering efforts should focus on improving the dephasing and the quality of quantum coherent control, as they effectively limit the performance of fault-tolerant protocols.

July 26, 2023
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TQC 2023 | 24-28 July 2023, University of Aveiro, Portugal
http://tqc-conference.org

18th Conference on the  Theory of Quantum Computation, Communication and Cryptography.

TQC is a leading annual international conference for students and researchers working in the theoretical aspects of quantum information science. The scientific objective is to bring together the theoretical quantum information science community to present and discuss the latest advances in the field.


Organisation:
Squids - Schools for Quantum Information Development  
Universidade de Aveiro: Departamento de Matemática, CIDMA & Fábrica


Sponsors:
Phasecraft, UK
Google Quantum AI, USA
QuSoft, The Netherlands
Quantum for Life Centre, Denmark
Technology Innovation Institute, UAE
ML4Q, Germany
Dulwich Quantum