Delayed-choice test of quantum complementarity with interfering single photons

Vincent Jacques; E. Wu; Frédéric Grosshans; François Treussart; Philippe Grangier; Alain Aspect; Jean François Roch

doi:10.1103/PhysRevLett.100.220402

Delayed-choice test of quantum complementarity with interfering single photons

Vincent Jacques^*
, E. Wu
, Frédéric Grosshans
, François Treussart
, Philippe Grangier
, Alain Aspect
, Jean François Roch

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

136 Scopus citations

Abstract

We report an experimental test of quantum complementarity with single-photon pulses sent into a Mach-Zehnder interferometer with an output beam splitter of adjustable reflection coefficient R. In addition, the experiment is realized in Wheeler's delayed-choice regime. Each randomly set value of R allows us to observe interference with visibility V and to obtain incomplete which-path information characterized by the distinguishability parameter D. Measured values of V and D are found to fulfill the complementarity relation V2+D2≤1.

Original language	English
Article number	220402
Journal	Physical Review Letters
Volume	100
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.100.220402
State	Published - 4 Jun 2008
Externally published	Yes

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abstract = "We report an experimental test of quantum complementarity with single-photon pulses sent into a Mach-Zehnder interferometer with an output beam splitter of adjustable reflection coefficient R. In addition, the experiment is realized in Wheeler's delayed-choice regime. Each randomly set value of R allows us to observe interference with visibility V and to obtain incomplete which-path information characterized by the distinguishability parameter D. Measured values of V and D are found to fulfill the complementarity relation V2+D2≤1.",

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AU - Jacques, Vincent

AU - Wu, E.

AU - Grosshans, Frédéric

AU - Treussart, François

AU - Grangier, Philippe

AU - Aspect, Alain

AU - Roch, Jean François

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AB - We report an experimental test of quantum complementarity with single-photon pulses sent into a Mach-Zehnder interferometer with an output beam splitter of adjustable reflection coefficient R. In addition, the experiment is realized in Wheeler's delayed-choice regime. Each randomly set value of R allows us to observe interference with visibility V and to obtain incomplete which-path information characterized by the distinguishability parameter D. Measured values of V and D are found to fulfill the complementarity relation V2+D2≤1.

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DO - 10.1103/PhysRevLett.100.220402

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Delayed-choice test of quantum complementarity with interfering single photons

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