Error mitigation via stabilizer measurement emulation
- URL: http://arxiv.org/abs/2102.05767v1
- Date: Wed, 10 Feb 2021 22:58:09 GMT
- Title: Error mitigation via stabilizer measurement emulation
- Authors: A. Greene, M. Kjaergaard, M. E. Schwartz, G. O. Samach, A. Bengtsson,
M. O'Keeffe, D. K. Kim, M. Marvian, A. Melville, B. M. Niedzielski, A.
Vepsalainen, R. Winik, J. Yoder, D. Rosenberg, S. Lloyd, T. P. Orlando, I.
Marvian, S. Gustavsson, W. D. Oliver
- Abstract summary: We introduce and demonstrate quantum measurement emulation (QQME)
QQME effectively emulates the measurement of stabilizer operators via gate application, leading to a first-order insensitivity to coherent errors.
It is particularly well-suited to discrete coherent errors that are challenging for DD to address.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Dynamical decoupling (DD) is a widely-used quantum control technique that
takes advantage of temporal symmetries in order to partially suppress quantum
errors without the need resource-intensive error detection and correction
protocols. This and other open-loop error mitigation techniques are critical
for quantum information processing in the era of Noisy Intermediate-Scale
Quantum technology. However, despite its utility, dynamical decoupling does not
address errors which occur at unstructured times during a circuit, including
certain commonly-encountered noise mechanisms such as cross-talk and
imperfectly calibrated control pulses. Here, we introduce and demonstrate an
alternative technique - `quantum measurement emulation' (QME) - that
effectively emulates the measurement of stabilizer operators via stochastic
gate application, leading to a first-order insensitivity to coherent errors.
The QME protocol enables error suppression based on the stabilizer code
formalism without the need for costly measurements and feedback, and it is
particularly well-suited to discrete coherent errors that are challenging for
DD to address.
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