Theoretical Study of the Squeezed-Light-Enhanced Sensitivity to Gravity-Induced Entanglement via Finite-Time Analysis
arXiv:2508.01397 · doi:10.1103/1mfv-y24t
Abstract
We investigate the advantage of using squeezed input light for generating gravity-induced entanglement (GIE) through Fourier-domain analysis. Based on the findings of Ref.~\cite{Miki2024}, which demonstrated the feasibility of detecting GIE in optomechanical systems under quantum control, we further demonstrate that squeezed input light can reduce the optical noise in the mechanical conditional state and enhance GIE. Furthermore, we estimate the systematic and statistical errors in the measurement of GIE using the Fourier transformation over a finite measurement time. Based on the error estimations using the signal-to-noise ratio (SNR) in GIE detection, we find that a total measurement time of is required to achieve when using squeezed input light, whereas is needed without squeezed input light. This result highlights the effectiveness of optomechanical systems and the critical role of squeezed input light in enhancing the detectability of GIE.
14 pages, 5 figures
References in corpus (37)
- Quantum entanglement
- Cavity Optomechanics
- Enhancing the sensitivity of the LIGO gravitational wave detector by using squeezed states of light
- A Spin Entanglement Witness for Quantum Gravity
- Gravitationally-induced entanglement between two massive particles is sufficient evidence of quantum effects in gravity
- Conversion of conventional gravitational-wave interferometers into QND interferometers by modifying their input and/or output optics
- Entangling macroscopic oscillators exploiting radiation pressure
- Ground-state cooling of a micromechanical oscillator: generalized framework for cold damping and cavity-assisted cooling schemes
- Locality & Entanglement in Table-Top Testing of the Quantum Nature of Linearized Gravity
- Observable quantum entanglement due to gravity
- Quantum Gravity Witness via Entanglement of Masses: Casimir Screening
- Approaching the motional ground state of a 10 kg object
- Experimental results from the ST7 mission on LISA Pathfinder
- Using an atom interferometer to infer gravitational entanglement generation
- BASE - The Baryon Antibaryon Symmetry Experiment
- Quantum correlation of light mediated by gravity
- Gravity-induced entanglement in optomechanical systems
- On two recent proposals for witnessing nonclassical gravity
- Gas damping force noise on a macroscopic test body in an infinite gas reservoir
- Demonstration of displacement sensing of a mg-scale pendulum for mm- and mg- scale gravity measurements
- Entanglement and decoherence of massive particles due to gravity
- High Q mg-scale monolithic pendulum for quantum-limited gravity measurements
- Signatures of the quantum nature of gravity in the differential motion of two masses
- Quantum sensing with milligram scale optomechanical systems
- Decoherence of a matter-wave interferometer due to dipole-dipole interactions
- Micron-size spatial superpositions for the QGEM-protocol via screening and trapping
- Non-Gaussian entanglement in gravitating masses: the role of cumulants
- Semi-classical gravity phenomenology under the causal-conditional quantum measurement prescription
- Gravity, Quantum Fields and Quantum Information: Problems with classical channel and stochastic theories
- The generation rate of quantum gravity induced entanglement with multiple massive particles
- Feasible generation of gravity-induced entanglement by using optomechanical systems
- Enhancement of quantum gravity signal in an optomechanical experiment
- Quantum signature of gravity in optomechanical systems with conditional measurement
- The Role of Quantum Measurements when Testing the Quantum Nature of Gravity
- Gravity-induced entanglement between two massive microscopic particles in curved spacetime: II.Friedmann- Lemaître-Robertson-Walker universe
- Optimal Form Factors for Experimental Proposals on Gravity-Induced Entanglement
- Gravity induced entanglement of multiple massive particles with large spin