# A Quantum Delayed-Choice Experiment

@article{Peruzzo2012AQD,
title={A Quantum Delayed-Choice Experiment},
author={Alberto Peruzzo and Peter J. Shadbolt and Nicolas Brunner and Sandu Popescu and Jeremy Lloyd O'Brien},
journal={Science},
year={2012},
volume={338},
pages={634 - 637}
}
• Published 22 May 2012
• Physics
• Science
Delaying Quantum Choice Photons can display wavelike or particle-like behavior, depending on the experimental technique used to measure them. Understanding this duality lies at the heart of quantum mechanics. In two reports, Peruzzo et al. (p. 634) and Kaiser et al. (p. 637; see the Perspective on both papers by Lloyd) perform an entangled version of John Wheeler's delayed-choice gedanken experiment, in which the choice of detection can be changed after a photon passes through a double-slit to…

### Entanglement-Enabled Delayed-Choice Experiment

• Physics
Science
• 2012
An entangled version of John Wheeler's delayed-choice gedanken experiment is performed, in which the choice of detection can be changed after a photon passes through a double-slit to avoid the measurement process affecting the state of the photon.

### Quantum wave–particle superposition in a delayed-choice experiment

• Physics
Nature Photonics
• 2019
Wave-particle duality epitomizes the counterintuitive character of quantum physics. A striking illustration is the quantum delay-choice experiment, which is based on Wheeler's classic delayed-choice

### Wheeler’s delayed-choice experiment based on Rydberg atoms

• Physics
Journal of Physics B: Atomic, Molecular and Optical Physics
• 2022
The delayed choice gedanken-experiment initially proposed by J A Wheeler reveals the nontrivial features of wave–particle duality in quantum world, that is, the choice of whether to observe the

### Delayed-choice gedanken experiments and their realizations

• Physics
• 2016
The wave-particle duality dates back to Einstein's explanation of the photoelectric effect through quanta of light and de Broglie's hypothesis of matter waves. Quantum mechanics uses an abstract

### Observing wave/particle duality of light using topological charge

• Physics
• 2018
Wave particle duality, also called complementarity, is deeply rooted in the heart of quantum theory. It is fully exemplified in the famous Wheeler's delayed choice experiment where the choice of the

### Observations of Deterministic Quantum Correlation Using Coherent Light

• Physics
• 2021
Complementarity theory is the essence of the Copenhagen interpretation in quantum mechanics. Since the Hanbury Brown and Twiss experiments, the particle nature of photons has been intensively

### Realistic interpretation of quantum mechanics and encounter-delayed-choice experiment

• Physics
• 2014
In this paper, a realistic interpretation (REIN) of the wave function in quantum mechanics is briefly presented. We demonstrate that in the REIN, the wave function of a microscopic object is its real

### Simulation of quantum delayed-choice experiment through a single shot.

• Physics
Optics express
• 2021
This work provides a simple and new route to inspect quantum duality, which does not require adjusting experimental parameters frequently and only needs performing measurement once.

### Realization of an entanglement-assisted quantum delayed-choice experiment

• Physics
• 2015
The puzzling properties of quantum mechanics, wave-particle duality, entanglement and superposition, were dissected experimentally at past decades. However, hidden-variable (HV) models, based on

### Quantum Delayed-Choice Experiment and Wave-Particle Superposition

• Physics
• 2014
We propose a simple implementation scheme of quantum delayed-choice experiment in linear optical system without initial entanglement resource. By choosing different detecting devices, one can

## References

SHOWING 1-10 OF 47 REFERENCES

### Entanglement-Enabled Delayed-Choice Experiment

• Physics
Science
• 2012
An entangled version of John Wheeler's delayed-choice gedanken experiment is performed, in which the choice of detection can be changed after a photon passes through a double-slit to avoid the measurement process affecting the state of the photon.

### Realization of quantum Wheeler's delayed-choice experiment

• Physics
• 2012
Light is believed to exhibit wave–particle duality1 depending on the detecting devices, according to Bohr's complementarity principle2, as has been demonstrated by the ‘delayed-choice experiment’

### Experimental analysis of the quantum complementarity principle

• Physics
• 2012
One of the milestones of quantum mechanics is Bohr's complementarity principle. It states that a single quantum can exhibit a particle-like \emph{or} a wave-like behaviour, but never both at the same

### Proposal for a quantum delayed-choice experiment.

• Physics
Physical review letters
• 2011
This work proposes a framework to analyze quantum-controlled experiments and illustrates it by discussing a quantum version of Wheeler's delayed-choice experiment, showing that a photon can have a morphing behavior between particle and wave.

### Wave–particle duality of C60 molecules

• Physics
Nature
• 1999
The observation of de Broglie wave interference of C60 molecules by diffraction at a material absorption grating is reported, which is the most massive and complex object in which wave behaviour has been observed.

### Delayed "Choice" quantum eraser

The experimental results demonstrate the possibility of delayed determination of particlelike or wavelike behavior via quantum entanglement, and the which-path or both-path information of a quantum can be marked or erased by its entangled twin even after the registration of the quantum.

### Experimental Realization of Wheeler's Delayed-Choice Gedanken Experiment

• Physics
Science
• 2007
This work reports an almost ideal realization of Wheeler's delayed-choice gedanken experiment with single photons allowing unambiguous which-way measurements.

### Bell violation using entangled photons without the fair-sampling assumption

• Physics
Nature
• 2013
This experiment makes the photon the first physical system for which each of the main loopholes has been closed, albeit in different experiments, and uses the Eberhard form of Bell’s inequality, which allows a lower collection efficiency than other forms.

### NMR implementation of a quantum delayed-choice experiment

• Physics
• 2012
We report the first experimental demonstration of quantum delayed-choice experiment via nuclear magnetic resonance techniques. An ensemble of molecules each with two spin-1/2 nuclei are used as

### Delayed-choice experiments in quantum interference.

• Physics
Physical review. A, General physics
• 1987
The results obtained show no observable difference between normal and delayed-choice modes of operation, in agreement with the predictions of quantum mechanics.