Smoothing of Gaussian quantum dynamics for force detection

Zhishen Huang and Mohan Sarovar
Phys. Rev. A 97, 042106 – Published 10 April 2018

Abstract

Building on recent work by Gammelmark et al. [Phys. Rev. Lett. 111, 160401 (2013)] we develop a formalism for prediction and retrodiction of Gaussian quantum systems undergoing continuous measurements. We apply the resulting formalism to study the advantage of incorporating a full measurement record and retrodiction for impulselike force detection and accelerometry. We find that using retrodiction can only increase accuracy in a limited parameter regime, but that the reduction in estimation noise that it yields results in better detection of impulselike forces.

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  • Received 10 December 2017

DOI:https://doi.org/10.1103/PhysRevA.97.042106

©2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalQuantum Information, Science & Technology

Authors & Affiliations

Zhishen Huang*

  • Department of Applied Mathematics, University of Colorado, Boulder, Colorado 80309-0526, USA

Mohan Sarovar

  • Extreme-scale Data Science and Analytics, Sandia National Laboratories, Livermore, California 94550, USA

  • *zhishen.huang@colorado.edu
  • mnsarov@sandia.gov

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Issue

Vol. 97, Iss. 4 — April 2018

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