Abstracts
Poster Abstracts | Talk Abstracts
Always-on quantum error tracking with continuous parity measurements
Presenting Author: Razieh Mohseninia, Chapman University
Contributing Author(s): Jing Yang, Andrew N. Jordan, Alexander N. Korotkov, Justin Dressel
We investigate quantum error correction using continuous parity measurements to correct bit-flip errors with the three-qubit code. Continuous monitoring of errors brings the benefit of a continuous stream of information, which facilitates passive error tracking in real time. However, the noisy analog signals from continuous parity measurements mandate more complicated signal processing to interpret syndromes accurately. To this end we introduce different filters. As an optimal filter, we discuss an unnormalized (linear) Bayesian filter, with improved computational efficiency compared to the related Wonham filter. We then compare this optimal filter to several filters that are better suited for real time implementation with low-latency circuitry, based on straightforward boxcar-averaging and thresholding.
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