Time-Reversal and Super-Resolving Phase Measurements | Zendy

K. J. Resch | Zendy; K. L. Pregnell | Zendy; Robert Prevedel | Zendy; Alexei Gilchrist | Zendy; Geoff J. Pryde | Zendy; Jeremy L. O’Brien | Zendy; A. G. White | Zendy

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Time-Reversal and Super-Resolving Phase Measurements

Author(s) -

K. J. Resch,

K. L. Pregnell,

Robert Prevedel,

Alexei Gilchrist,

Geoff J. Pryde,

Jeremy L. O’Brien,

A. G. White

Publication year - 2007

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.98.223601

Subject(s) - physics , photon , visibility , phase (matter) , measure (data warehouse) , interference (communication) , photon entanglement , quantum mechanics , resolution (logic) , quantum , optics , quantum entanglement , computer science , channel (broadcasting) , database , artificial intelligence , computer network

We demonstrate phase super-resolution in the absence of entangled states. Thekey insight is to use the inherent time-reversal symmetry of quantum mechanics:our theory shows that it is possible to \emph{measure}, as opposed to prepare,entangled states. Our approach is robust, requiring only photons that exhibitclassical interference: we experimentally demonstrate high-visibility phasesuper-resolution with three, four, and six photons using a standard laser andphoton counters. Our six-photon experiment demonstrates the best phasesuper-resolution yet reported with high visibility and resolution.Comment: 4 pages, 3 figure

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