Prediction and retrodiction for a continuously monitored superconducting qubit

Physical Review Letters
D TanK W Murch

Abstract

The quantum state of a superconducting transmon qubit inside a three-dimensional cavity is monitored by transmission of a microwave field through the cavity. The information inferred from the measurement record is incorporated in a density matrix ρ_{t}, which is conditioned on probe results until t, and in an auxiliary matrix E_{t}, which is conditioned on probe results obtained after t. Here, we obtain these matrices from experimental data and we illustrate their application to predict and retrodict the outcome of weak and strong qubit measurements.

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Citations

Nov 14, 2015·Physical Review Letters·Ivonne Guevara, Howard Wiseman
Aug 8, 2018·Physical Review Letters·M NaghilooK W Murch
May 23, 2020·Physical Review Letters·T PeronninB Huard
Feb 5, 2016·Scientific Reports·Wei FengXin-Qi Li
May 31, 2016·Biology·John S Torday, William B Miller
Oct 13, 2018·Physical Review Letters·Ezad ShojaeeIvan H Deutsch
May 31, 2019·Physical Review Letters·Kiarn T LaverickHoward M Wiseman
Jul 7, 2017·Reports on Progress in Physics·G Wendin
Apr 4, 2018·Optics Express·Lupei QinXin-Qi Li
Nov 9, 2019·Physical Review Letters·Massimiliano RossiAlbert Schliesser
Apr 4, 2020·Physical Review Letters·M NaghilooK W Murch
May 16, 2020·Physical Review Letters·Bayan Karimi, Jukka P Pekola
Jan 17, 2017·Nature Communications·Sandeep MavadiaMichael J Biercuk
Jan 5, 2019·Physical Review Letters·Adrián A Budini
Jan 13, 2018·Scientific Reports·Luting Xu, Xin-Qi Li
Nov 11, 2020·Nature Communications·Han BaoYanhong Xiao
Aug 21, 2021·Physical Review. E·Stefano MarcantoniJuan P Garrahan

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