Time-reversal and super-resolving phase measurements

Resch, K. J., Pregnell, K. L., Prevedel, R., Gilchrist, A., Pryde, G. J., O'Brien, J. L. and White, A. G. (2007) Time-reversal and super-resolving phase measurements. Physical Review Letters, 98 22: 223601.1-223601.4. doi:10.1103/PhysRevLett.98.223601

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Author Resch, K. J.
Pregnell, K. L.
Prevedel, R.
Gilchrist, A.
Pryde, G. J.
O'Brien, J. L.
White, A. G.
Title Time-reversal and super-resolving phase measurements
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
1079-7114
Publication date 2007-05-31
Year available 2007
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.98.223601
Open Access Status File (Publisher version)
Volume 98
Issue 22
Start page 223601.1
End page 223601.4
Total pages 4
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2008
Language eng
Subject 240402 Quantum Optics and Lasers
C1
780102 Physical sciences
Abstract We demonstrate phase super-resolution in the absence of entangled states. The key insight is to use the inherent time-reversal symmetry of quantum mechanics: our theory shows that it is possible to measure, as opposed to prepare, entangled states. Our approach is robust, requiring only photons that exhibit classical interference: we experimentally demonstrate high-visibility phase super-resolution with three, four, and six photons using a standard laser and photon counters. Our six-photon experiment demonstrates the best phase super-resolution yet reported with high visibility and resolution.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Thu, 03 Apr 2008, 15:52:55 EST by Anna Rogers on behalf of School of Mathematics & Physics