Gravity-induced entanglement between two massive microscopic particles in curved spacetime: I.The Schwarzschild background
- URL: http://arxiv.org/abs/2308.16526v2
- Date: Sat, 18 May 2024 10:01:51 GMT
- Title: Gravity-induced entanglement between two massive microscopic particles in curved spacetime: I.The Schwarzschild background
- Authors: Chi Zhang, Fu-Wen Shu,
- Abstract summary: The gravitational field within curved spacetime can induce observable entanglement between particle pairs in both scenarios.
This approach establishes a more pronounced and extensive manifestation of the quantum influences of gravity.
These experiments hold immense advantages and implications for the detection of quantum gravity.
- Score: 2.915799083273604
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: 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 mass (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.
Related papers
- Semiclassical gravity phenomenology under the causal-conditional quantum measurement prescription II: Heisenberg picture and apparent optical entanglement [13.04737397490371]
In quantum gravity theory, a state-dependent gravitational potential introduces nonlinearity into the state evolution.
The formalism for understanding the continuous quantum measurement process on the quantum state has been previously discussed using the Schr"odinger picture.
In this work, an equivalent formalism using the Heisenberg picture is developed and applied to the analysis of two optomechanical experiment protocols.
arXiv Detail & Related papers (2024-11-08T14:07:18Z) - Table-top nanodiamond interferometer enabling quantum gravity tests [34.82692226532414]
We present a feasibility study for a table-top nanodiamond-based interferometer.
By relying on quantum superpositions of steady massive objects our interferometer may allow exploiting just small-range electromagnetic fields.
arXiv Detail & Related papers (2024-05-31T17:20:59Z) - Entanglement Dynamics in Quantum Continuous-Variable States [2.480301925841752]
Gravitation between two quantum masses is one of the most straightforward scenarios where quantum features of gravity could be observed.
This thesis introduces general tools to tackle interaction-mediated entanglement and applies them to two particles prepared in continuous-variable states.
arXiv Detail & Related papers (2024-05-12T19:21:21Z) - Probing the curvature of the cosmos from quantum entanglement due to
gravity [0.0]
We find that the curvature of the background spacetime leaves its imprints on the resulting entanglement profile.
This opens up an exciting new avenue of measuring the local expansion rate of the cosmos.
arXiv Detail & Related papers (2023-11-09T16:18:25Z) - Detecting Gravitationally Interacting Dark Matter with Quantum Interference [47.03992469282679]
We show that there is a theoretical possibility to directly detect such particles using highly sensitive gravity-mediated quantum phase shifts.
In particular, we consider a protocol utilizing Josephson junctions.
arXiv Detail & Related papers (2023-09-15T08:22:46Z) - Testing the nonclassicality of gravity with the field of a single
delocalized mass [55.2480439325792]
A setup is proposed that is based on a single delocalized mass coupled to a harmonically trapped test mass.
We investigate the in-principle feasibility of such an experiment, which turns out to crucially depend on the ability to tame Casimir-Polder forces.
arXiv Detail & Related papers (2023-07-18T15:40:16Z) - Quantum time dilation in a gravitational field [39.58317527488534]
We investigate how the superposition principle affects the gravitational time dilation observed by a simple clock.
We show that the emission rate of an atom prepared in a coherent superposition of separated wave packets in a gravitational field is different from the emission rate of an atom in a classical mixture of these packets.
arXiv Detail & Related papers (2022-04-22T10:02:21Z) - Schr\"odinger's Black Hole Cat [0.0]
We show how to describe such "spacetime superpositions" and explore effects they induce upon quantum matter.
Our approach capitalizes on standard tools of quantum field theory in curved space.
arXiv Detail & Related papers (2022-04-01T12:11:36Z) - Quantum signatures of black hole mass superpositions [0.0]
We apply our approach to analyze the dynamics of a detector in a spacetime generated by a BTZ black hole in a superposition of masses.
We find that the detector exhibits signatures of quantum-gravitational effects corroborating Bekenstein's seminal conjecture concerning the quantized mass spectrum of black holes in quantum gravity.
arXiv Detail & Related papers (2021-11-26T05:20:25Z) - Emerging (2+1)D massive graviton in graphene-like systems [0.0]
Quantum aspects of gravity, such as massive gravitons, can emerge in experiments with fractional quantum Hall liquids.
We employ (2+1)-dimensional Dirac fermions, emerging in the continuous limit of a fermionic honeycomb lattice, coupled to massive gravitons, simulated by bosonic modes.
The similarity of our approach to current optical lattice configurations suggests that quantum signatures of gravity can be simulated in the laboratory in the near future.
arXiv Detail & Related papers (2021-09-15T19:37:29Z) - Spacetime effects on wavepackets of coherent light [24.587462517914865]
We introduce an operational way to distinguish between the overall shift in the pulse wavepacket and its genuine deformation after propagation.
We then apply our technique to quantum states of photons that are coherent in the frequency degree of freedom.
We find that the quantum coherence initially present can enhance the deformation induced by propagation in a curved background.
arXiv Detail & Related papers (2021-06-23T14:20:19Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.