Time-reversal and super-resolving phase measurements

K. J. Resch, K. L. Pregnell, R. Prevedel, A. Gilchrist, G. J. Pryde, J. L. O'Brien, A. G. White

Research output: Contribution to journalArticle

175 Citations (Scopus)

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.

Original languageEnglish
Article number223601
JournalPhysical Review Letters
Volume98
Issue number22
DOIs
Publication statusPublished - 31 May 2007
Externally publishedYes

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photons
visibility
quantum mechanics
counters
interference
symmetry
lasers

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Resch, K. J., Pregnell, K. L., Prevedel, R., Gilchrist, A., Pryde, G. J., O'Brien, J. L., & White, A. G. (2007). Time-reversal and super-resolving phase measurements. Physical Review Letters, 98(22), [223601]. https://doi.org/10.1103/PhysRevLett.98.223601
Resch, K. J. ; Pregnell, K. L. ; Prevedel, R. ; Gilchrist, A. ; Pryde, G. J. ; O'Brien, J. L. ; White, A. G. / Time-reversal and super-resolving phase measurements. In: Physical Review Letters. 2007 ; Vol. 98, No. 22.
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Resch, KJ, Pregnell, KL, Prevedel, R, Gilchrist, A, Pryde, GJ, O'Brien, JL & White, AG 2007, 'Time-reversal and super-resolving phase measurements' Physical Review Letters, vol. 98, no. 22, 223601. https://doi.org/10.1103/PhysRevLett.98.223601

Time-reversal and super-resolving phase measurements. / Resch, K. J.; Pregnell, K. L.; Prevedel, R.; Gilchrist, A.; Pryde, G. J.; O'Brien, J. L.; White, A. G.

In: Physical Review Letters, Vol. 98, No. 22, 223601, 31.05.2007.

Research output: Contribution to journalArticle

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Resch KJ, Pregnell KL, Prevedel R, Gilchrist A, Pryde GJ, O'Brien JL et al. Time-reversal and super-resolving phase measurements. Physical Review Letters. 2007 May 31;98(22). 223601. https://doi.org/10.1103/PhysRevLett.98.223601