Quantum-enhanced sensing based on time reversal of nonlinear dynamics

Linnemann, D., Strobel, H., Muessel, W., Schulz, J., Lewis-Swan, R. J., Kheruntsyan, K. V. and Oberthaler, M. K. (2016) Quantum-enhanced sensing based on time reversal of nonlinear dynamics. Physical Review Letters, 117 1: 013001. doi:10.1103/PhysRevLett.117.013001

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Author Linnemann, D.
Strobel, H.
Muessel, W.
Schulz, J.
Lewis-Swan, R. J.
Kheruntsyan, K. V.
Oberthaler, M. K.
Title Quantum-enhanced sensing based on time reversal of nonlinear dynamics
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 1079-7114
Publication date 2016-07-01
Year available 2016
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.117.013001
Open Access Status File (Publisher version)
Volume 117
Issue 1
Start page 013001
Total pages 5
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Abstract We experimentally demonstrate a nonlinear detection scheme exploiting time-reversal dynamics that disentangles continuous variable entangled states for feasible readout. Spin-exchange dynamics of Bose-Einstein condensates is used as the nonlinear mechanism which not only generates entangled states but can also be time reversed by controlled phase imprinting. For demonstration of a quantum-enhanced measurement we construct an active atom SU(1,1) interferometer, where entangled state preparation and nonlinear readout both consist of parametric amplification. This scheme is capable of exhausting the quantum resource by detecting solely mean atom numbers. Controlled nonlinear transformations widen the spectrum of useful entangled states for applied quantum technologies.
Keyword Nonlinear detection scheme
Time-reversal dynamics
Spin-exchange dynamics
Bose-Einstein condensates
Quantum-enhanced measurement
Applied quantum technologies
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 284584
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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