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Optimal waveform estimation for classical and quantum systems via time-symmetric smoothing. II. Applications to atomic magnetometry and Hardy's paradox

Source: Phys. Rev. A 81, 013824 (2010); doi:10.1103/PhysRevA.81.013824

Published 26 January 2010

PACS
  • 03.65.Ta
    Foundations of quantum mechanics; measurement theory
  • 03.65.Ud
    Entanglement and quantum nonlocality
  • 03.65.Yz
    Decoherence; open systems; quantum statistical methods
  • YEAR: 2010
PUBLICATION DATA
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Mankei Tsang
Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
The time-symmetric quantum smoothing theory [Tsang, Phys. Rev. Lett. 102, 250403 (2009); Phys. Rev. A 80, 033840 (2009)] is extended to account for discrete jumps in the classical random process to be estimated, discrete variables in the quantum system, such as spin, angular momentum, and photon number, and Poisson measurements, such as photon counting. The extended theory is used to model atomic magnetometers and study Hardy's paradox in phase space. ©2010 The American Physical Society
History: Received 19 October 2009; published 26 January 2010
Permalink: http://link.aps.org/abstract/PRA/v81/e013824
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