Time-Symmetric Quantum Theory of Smoothing
Name
Tsang-2009-Time-Symmetric Quant.pdf
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143.04 KB
Format
Adobe PDF
Checksum (MD5)
1ce6211f0421a8076bf76677b7a32f8d
Author(s)
Tsang, Mankei
Date Issued
June 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Tsang, Mankei . “Time-Symmetric Quantum Theory of Smoothing.” Physical Review Letters 102.25 (2009): 250403. (C) 2010 The American Physical Society.
Version
Final published version
Abstract
Smoothing is an estimation technique that takes into account both past and future observations and can be more accurate than filtering alone. In this Letter, a quantum theory of smoothing is constructed using a time-symmetric formalism, thereby generalizing prior work on classical and quantum filtering, retrodiction, and smoothing. The proposed theory solves the important problem of optimally estimating classical Markov processes coupled to a quantum system under continuous measurements, and is thus expected to find major applications in future quantum sensing systems, such as gravitational wave detectors and atomic magnetometers.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.102.250403
