Experimental observation of simultaneous wave and particle behavior in a narrowband single-photon wave packet

Yan, Hui; Liao, Kai-Yu; Deng, Zanhong; He, Junyu; Xue, Zheng‐Yuan; Zhang, Zhiming; Zhu, Shi-Liang

doi:10.1103/physreva.91.042132

Cited by 17 publications

(13 citation statements)

References 31 publications

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“…The narrowband photon pairs are generated through spontaneous four-wave mixing (SFWM) in a two-dimensional 85 Rb magneto-optical trap (MOT) with a longitudinal length of L = 1.7 cm as addressed in our previous work 20 28 . The atoms are prepared on the ground level |1〉 and have an optical depth of about 50 in the |1〉 → |3〉 transition, as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

Experimental test of the no-go theorem for continuous ψ-epistemic models

Liao

Zhang

Guo

et al. 2016

Sci Rep

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Quantum states are the key mathematical objects in quantum theory; however, there is still much debate concerning what a quantum state truly represents. One such century-old debate is whether a quantum state is ontic or epistemic. Recently, a no-go theorem was proposed, stating that the continuous ψ-epistemic models cannot reproduce the measurement statistic of quantum states. Here we experimentally test this theorem with high-dimensional single photon quantum states without additional assumptions except for the fair-sampling assumption. Our experimental results reproduce the prediction of quantum theory and support the no-go theorem.

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Section: Methodsmentioning

confidence: 99%

Experimental test of the no-go theorem for continuous ψ-epistemic models

Liao

Zhang

Guo

et al. 2016

Sci Rep

Self Cite

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“…Furthermore, Eq. (15,20) provide the complementary relation between the fringe visibility and the CC. Indeed, the definitions of the distinguishability and CC have a common basic-orthogonal projection.…”

Section: (2) Based On Zurek's "Triple Model" Of Quantum Measurementmentioning

confidence: 99%

Information gain versus interference in Bohr’s principle of complementarity

Liu¹,

Lu²,

Zhou³

et al. 2017

Opt. Express

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Based on modern quantum measurement theory, we use Zurek's "triple model" to study, from the viewpoint of quantum information theory, the wave and particle nature of a photon in a symmetric Mach-Zehnder interferometer. In the process of quantum measurement, the state of both the system and the detector is not an entangled state but a correlated state. We find that the information gain about the photon is related to the correlations (including classical and quantum correlations) between the photon and the detector. We also derive the relationship between the information gain and the fringe visibility. We find that the classical correlations remain consistent with the path distinguishability and can be used to describe the particle-like property of the photon. Quantum correlations are not exactly the same as fringe visibility, but both can represent the quantum coherence of the photon. Finally, we provide an analytical expression for quantum correlations of one type of two-qubit separable states.

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“…13,14 This extends the conventional boundary of Bohr's complementarity principle. The quantum delayed-choice experiment has already been implemented in nuclear magnetic resonance, [15][16][17] optics, [18][19][20][21][22][23] and superconducting circuits. 24,25 However, all these experiments were performed essentially at the microscopic scale.…”

Section: Introductionmentioning

confidence: 99%

Proposal to test quantum wave-particle superposition on massive mechanical resonators

et al. 2019

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We present and analyze a proposal for a macroscopic quantum delayed-choice experiment with massive mechanical resonators. In our approach, the electronic spin of a single nitrogen-vacancy impurity is employed to control the coherent coupling between the mechanical modes of two carbon nanotubes. We demonstrate that a mechanical phonon can be in a coherent superposition of wave and particle, thus exhibiting both behaviors at the same time. We also discuss the mechanical noise tolerable in our proposal and predict a critical temperature below which the morphing between wave and particle states can be effectively observed in the presence of environment-induced fluctuations. Furthermore, we describe how to amplify single-phonon excitations of the mechanical-resonator superposition states to a macroscopic level, via squeezing the mechanical modes. This approach corresponds to the phase-covariant cloning. Therefore, our proposal can serve as a test of macroscopic quantum superpositions of massive objects even with large excitations. This work, which describes a fundamental test of the limits of quantum mechanics at the macroscopic scale, would have implications for quantum metrology and quantum information processing.

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Experimental observation of simultaneous wave and particle behavior in a narrowband single-photon wave packet

Cited by 17 publications

References 31 publications

Experimental test of the no-go theorem for continuous ψ-epistemic models

Experimental test of the no-go theorem for continuous ψ-epistemic models

Information gain versus interference in Bohr’s principle of complementarity

Proposal to test quantum wave-particle superposition on massive mechanical resonators

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