SCIENCE CHINA Information Sciences, Volume 64 , Issue 8 : 189202(2021) https://doi.org/10.1007/s11432-018-9793-2

On-line quantum state estimation using continuous weak measurement and compressed sensing

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  • ReceivedSep 28, 2018
  • AcceptedFeb 14, 2019
  • PublishedJun 2, 2020


There is no abstract available for this article.


This work was supported by National Natural Science Foundation of China (Grant Nos. 61573330, 61720106009)


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  • Figure 1

    (Color online) (a) On-line estimation of the quantum state based on continuous weak measurements; (b) evolution trajectories of the actual state $\rho~(t)$ (red line) and the on-line estimation state $\tilde{\rho~}(t)$ (blue line) in the Bloch sphere; (c) fidelity of sampling times with three different noise amplitudes.