IQIM Postdoctoral and Graduate Student Seminar

Abstract: In this talk I will discuss the continuous operation of the four-qubit Bacon-Shor code ([[4,1,2]]), where the non-commuting gauge operators are measured weakly and at the same time [1]. I will show how error syndromes in this case are defined in terms of time-averaged correlators of the measurement output signals. I will also present results for the logical error rate and the termination rate for this quantum error detecting code for several models of decoherence. Finally, I will answer the question whether the code operation with continuous measurements can be comparable in performance with the operation based on projective measurements.

[1] Juan Atalaya, Mohammad Bahrami, Leonid P. Pryadko, and Alexander N. Korotkov, PRA 95, 032317 (2017)