Performance of teleportation-based error correction circuits for bosonic codes with noisy measurements
ORAL
Abstract
We further analyze the error correction performance of rotation-symmetric (RSB) codes using a Knill-type error correction circuit (ECC) including measurement errors into the noise model of the data qubit. Focusing on physical measurements models, we assess the performance of heterodyne and adaptive homodyne detection in comparison to the previously studied canonical phase measurement. We find that with the current measurement efficiencies in microwave optics, RSB codes undergo a substantial decrease in their break-even potential. The results are compared to GKP codes using a similar ECC which shows a greater reduction in performance together with a vulnerability to photon dephasing. Our results show that highly efficient measurement protocols are an important part of error-corrected quantum information processing with bosonic codes.
*G. F. is supported by the Swedish Research Council Grant QuACVA. F.Q. and G.F. acknowledge support through the Wallenberg Centre for Quantum Technology. T.H. and G.F. acknowledge funding through the Excellence Initiative Nano. A.L.G. is supported by the Australian Research Council, through the Centre of Excellence for Engineered Quantum Systems project number CE170100009 and Discovery Early Career Research Award project number DE190100380.
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Publication: http://arxiv.org/abs/2108.01009
Presenters
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Timo Hillmann
- Chalmers University of Technology