A Quantum Delayed-Choice Experiment

Alberto Peruzzo; Peter Shadbolt; Nicolas Brunner; Sandu Popescu; Jeremy L. O'Brien

doi:10.1126/science.1226719

A Quantum Delayed-Choice Experiment

Alberto Peruzzo, Peter Shadbolt, Nicolas Brunner, Sandu Popescu, Jeremy L. O'Brien

Research output: Contribution to journal › Article (Academic Journal) › peer-review

176 Citations (Scopus)

Abstract

Quantum systems exhibit particle-or wavelike behavior depending on the experimental apparatus they are confronted by. This wave-particle duality is at the heart of quantum mechanics. Its paradoxical nature is best captured in the delayed-choice thought experiment, in which a photon is forced to choose a behavior before the observer decides what to measure. Here, we report on a quantum delayed-choice experiment in which both particle and wave behaviors are investigated simultaneously. The genuinely quantum nature of the photon's behavior is certified via nonlocality, which here replaces the delayed choice of the observer in the original experiment. We observed strong nonlocal correlations, which show that the photon must simultaneously behave both as a particle and as a wave.

Original language	English
Pages (from-to)	634-637
Number of pages	4
Journal	Science
Volume	338
Issue number	6107
DOIs	https://doi.org/10.1126/science.1226719
Publication status	Published - 2 Nov 2012

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10.1126/science.1226719

http://www.sciencemag.org/content/338/6107/634

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Beyond Qubits with Photons (BQP)
O'Brien, J. L.
30/09/12 → 29/09/17
Project: Research
PHOTONIC QUANTUM TECHNOLOGIES
O'Brien, J. L.
1/09/07 → 1/09/12
Project: Research

Cite this

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title = "A Quantum Delayed-Choice Experiment",

abstract = "Quantum systems exhibit particle-or wavelike behavior depending on the experimental apparatus they are confronted by. This wave-particle duality is at the heart of quantum mechanics. Its paradoxical nature is best captured in the delayed-choice thought experiment, in which a photon is forced to choose a behavior before the observer decides what to measure. Here, we report on a quantum delayed-choice experiment in which both particle and wave behaviors are investigated simultaneously. The genuinely quantum nature of the photon's behavior is certified via nonlocality, which here replaces the delayed choice of the observer in the original experiment. We observed strong nonlocal correlations, which show that the photon must simultaneously behave both as a particle and as a wave.",

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T1 - A Quantum Delayed-Choice Experiment

AU - Peruzzo, Alberto

AU - Shadbolt, Peter

AU - Brunner, Nicolas

AU - Popescu, Sandu

AU - O'Brien, Jeremy L.

PY - 2012/11/2

Y1 - 2012/11/2

N2 - Quantum systems exhibit particle-or wavelike behavior depending on the experimental apparatus they are confronted by. This wave-particle duality is at the heart of quantum mechanics. Its paradoxical nature is best captured in the delayed-choice thought experiment, in which a photon is forced to choose a behavior before the observer decides what to measure. Here, we report on a quantum delayed-choice experiment in which both particle and wave behaviors are investigated simultaneously. The genuinely quantum nature of the photon's behavior is certified via nonlocality, which here replaces the delayed choice of the observer in the original experiment. We observed strong nonlocal correlations, which show that the photon must simultaneously behave both as a particle and as a wave.

AB - Quantum systems exhibit particle-or wavelike behavior depending on the experimental apparatus they are confronted by. This wave-particle duality is at the heart of quantum mechanics. Its paradoxical nature is best captured in the delayed-choice thought experiment, in which a photon is forced to choose a behavior before the observer decides what to measure. Here, we report on a quantum delayed-choice experiment in which both particle and wave behaviors are investigated simultaneously. The genuinely quantum nature of the photon's behavior is certified via nonlocality, which here replaces the delayed choice of the observer in the original experiment. We observed strong nonlocal correlations, which show that the photon must simultaneously behave both as a particle and as a wave.

U2 - 10.1126/science.1226719

DO - 10.1126/science.1226719

M3 - Article (Academic Journal)

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VL - 338

SP - 634

EP - 637

JO - Science

JF - Science

IS - 6107

ER -

A Quantum Delayed-Choice Experiment

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Beyond Qubits with Photons (BQP)

PHOTONIC QUANTUM TECHNOLOGIES

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