Work

General Approach to Error Detection of Bosonic Codes via Phase Estimation

Year: 2025

Type: article

Abstract: We present a general approach to error detection of bosonic quantum error-correction codes via an adaptive quantum phase estimation algorithm assisted by a single ancilla qubit. The approach is applicable to a broad class of bosonic codes whose error syndromes are described by symmetry or stabilizer operators, including the rotation-symmetric codes and Gottesman-Kitaev-Preskill (GKP) codes. The detection precision scales inversely with the total evolution time and thus reaches the Heisenberg limit. We numerically demonstrate the approach for several examples, such as detecting bosonic excitation loss errors in high-order cat or binomial codes and displacement errors in finite-energy GKP codes. We also extend the approach to efficiently generate arbitrary Fock states. Our schemes are feasible in present-day experiments.

Source: Physical Review Letters

DOI: 10.1103/h6rv-hz81

Authors: Yuan-De Jin, Shi-Yu Zhang, Ulrik L. Andersen, Wen-Long Ma

Institutions: Chinese Academy of Sciences, Institute of Semiconductors, University of Chinese Academy of Sciences, University of Michigan, Technical University of Denmark

Language: English

Topic: Quantum Computing Algorithms and Architecture

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green