Generation of entanglement between two laser pulses through gravitational interaction

He, Feifan; Zhang, Baocheng

doi:10.1140/epjp/s13360-023-03766-z

Cited by 3 publications

(1 citation statement)

References 36 publications

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“…[7,8] In contrast to classical lasers, quantum laser pulses are composed of a DOI: 10.1002/andp.202300423 well-defined number of photons, exhibiting quantum superposition and entanglement phenomena. [9,10] One of the key aspects of quantum laser pulses is their ability to exhibit non-classical properties, such as photon antibunching and sub-Poissonian photon statistics. [11][12][13] These properties arise from the fundamental principles of quantum mechanics, where the discreteness of photons leads to correlations and fluctuations that differ from classical expectations.…”

Section: Introductionmentioning

confidence: 99%

Noise‐Based Damping of Chaotic Entanglement in Pulsed Driven Two‐Qubit System

Abd‐Rabbou,

Khalil,

Al‐Awfi

2023

Annalen der Physik

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This paper investigates the entanglement dynamics of a two‐qubit system in the presence of n‐sequential sin 2‐pulse shape. The study explores entanglement under two scenarios: when the system is completely isolated from the environment and when it interacts with one of the surrounding environments, namely the thermal environment and the common dephasing environment. The authors quantify entanglement through concurrence while systematically examining the effects of initial state preparation, qubit coupling strength, laser‐qubit interaction intensity, pulse sequences, and decohering environments. The results highlight that the entanglement of the two‐qubit system strongly depends on the initial state. Increasing the coupling strength between the qubits and the n‐sequential pulse enhances the maximum values of entanglement. Conversely, augmenting the laser‐qubits coupling or introducing the influence of the environment diminishes the entanglement.

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Section: Introductionmentioning

confidence: 99%

Noise‐Based Damping of Chaotic Entanglement in Pulsed Driven Two‐Qubit System

Abd‐Rabbou,

Khalil,

Al‐Awfi

2023

Annalen der Physik

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Gravity-induced entanglement between two massive microscopic particles in curved spacetime: I. The Schwarzschild background

Zhang,

Shu

2024

Eur. Phys. J. C

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The experiment involving the entanglement of two massive particles through gravitational fields has been devised to discern the quantum attributes of gravity. In this paper, we present a scheme to extend this experiment’s applicability to more generalized curved spacetimes, with the objective of validating universal quantum gravity within broader contexts. Specifically, we direct our attention towards the quantum gravity induced entanglement of masses (QGEM) in astrophysical phenomena, such as particles traversing the interstellar medium. Notably, we ascertain that the gravitational field within curved spacetime can induce observable entanglement between particle pairs in both scenarios, even when dealing with particles significantly smaller than mesoscopic masses. Furthermore, we obtain the characteristic spectra of QGEM across diverse scenarios, shedding light on potential future experimental examinations. This approach not only establishes a more pronounced and extensive manifestation of the quantum influences of gravity compared to the original scheme but also opens avenues for prospective astronomical experiments. These experiments, aligned with our postulates, hold immense advantages and implications for the detection of quantum gravity and can be envisioned for future design.

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Gravity-induced entanglement between two massive microscopic particles in curved spacetime: II. Friedmann–Lemaître–Robertson–Walker universe

Zhang,

Shu

2024

Eur. Phys. J. C

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In our previous work (Zhang and Shu in Eur Phys J. C 84(3):256, 2024), we have explored quantum gravity induced entanglement of masses (QGEM) in curved spacetime, observing entanglement formation between particles moving along geodesics in a Schwarzschild spacetime background. We find that long interaction time induces entanglement, even for particles with microscopic mass, addressing decoherence concerns. In this work, we build upon our previous work (Zhang and Shu 2024) by extending our investigation to a time-dependent spacetime. Specifically, we explore the entanglement induced by the mutual gravitation of massive particles in the Friedmann–Lemaître–Robertson–Walker (FLRW) universe. With the help of the phase shift and the QGEM spectrum, our proposed scheme offers a potential method for observing the formation of entanglement caused by the quantum gravity of massive particles as they propagate in the FLRW universe. Consequently, it provides insights into the field of entanglement in cosmology.

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Generation of entanglement between two laser pulses through gravitational interaction

Cited by 3 publications

References 36 publications

Noise‐Based Damping of Chaotic Entanglement in Pulsed Driven Two‐Qubit System

Noise‐Based Damping of Chaotic Entanglement in Pulsed Driven Two‐Qubit System

Gravity-induced entanglement between two massive microscopic particles in curved spacetime: I. The Schwarzschild background

Gravity-induced entanglement between two massive microscopic particles in curved spacetime: II. Friedmann–Lemaître–Robertson–Walker universe

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