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Friday, October 29, 2021
11:00 AM - 12:00 PM
Online Event

IQIM Postdoctoral and Graduate Student Seminar

Improved quantum error correction using soft information

Abstract: The typical model for measurement noise in quantum error correction is to randomly flip the binary measurement outcome. In experiments, measurements yield much more information - e.g., continuous current values, discrete photon counts which is then mapped into binary outcomes. In this talk I will present a method to include this information into the decoding of surface codes. I will review hard decoding of surface codes and then describe a soft syndrome decoding version of Minimum Weight Perfect Matching decoder. I will then use our soft syndrome decoders to show the benefits of tuning experimental parameters with quantum error correction in mind.

Attend by zoom at https://caltech.zoom.us/j/88407627311?pwd=RGx4MlpSUnBLbDJvdE4rS1FHbWZvUT09

For more information, please contact Marcia Brown by phone at 626-395-4013 or by email at marciab@caltech.edu.