Searching for Signatures of Quantum Gravity in Quantum Gases

Abstract

We explore the possibility of testing the quantum nature of the gravitational field with an ensemble of ultra-cold atoms. The use of many microscopic particles may circumvent some of the experimental obstacles encountered in recent proposals involving a pair of particles with mesoscopic mass. We employ multi-parameter estimation techniques, including the quantum and classical Fisher information to provide a criteria for the observability of the quantum effects, and compare to other recently proposed schemes. Crucially, we find that by preparing the appropriate initial state, interactions mediated via a quantum-valued gravitational field provide a signature that is distinct from classical gravitational interactions. We find that a test with ultra-cold atoms would be challenging, but not implausible with moderate improvements to current experimental techniques.

References in corpus (20)

• Atom Interferometers
• Nonlinear atom interferometer surpasses classical precision limit
• A Spin Entanglement Witness for Quantum Gravity
• Quantum metrology from a quantum information science perspective
• Gravitationally-induced entanglement between two massive particles is sufficient evidence of quantum effects in gravity
• Quantum Superposition of Massive Objects and the Quantization of Gravity
• Tabletop experiments for quantum gravity: a user's manual
• Observable quantum entanglement due to gravity
• Robust spin squeezing via photon-mediated interactions on an optical clock transition
• On two recent proposals for witnessing nonclassical gravity
• Bounds on quantum communication via Newtonian gravity
• Magnetic field stabilization system for atomic physics experiments
• One- and two-axis squeezing of atomic ensembles in optical cavities
• Using Interaction-Based Readouts to Approach the Ultimate Limit of Detection Noise Robustness for Quantum-Enhanced Metrology in Collective Spin Systems
• Robustifying Twist-and-Turn Entanglement with Interaction-Based Readout
• Ultra-low noise magnetic field for quantum gases
• Experimental realization of a Rydberg optical Feshbach resonance in a quantum many-body system
• Optimal Matterwave Gravimetry
• Painting Non-Classical States of Spin or Motion with Shaped Single Photons
• Generating Macroscopic Superpositions with Interacting Bose-Einstein Condensates: Multi-Mode Speed-Ups and Speed Limits

Cited by in corpus (29)

• Gravitationally Mediated Entanglement: Newtonian Field vs. Gravitons
• Newton, entanglement, and the graviton
• Massive quantum systems as interfaces of quantum mechanics and gravity
• Enhancing Gravitational Interaction between Quantum Systems by a Massive Mediator
• Qudits for Witnessing Quantum Gravity Induced Entanglement of Masses Under Decoherence
• Improving resilience of the Quantum Gravity Induced Entanglement of Masses (QGEM) to decoherence using 3 superpositions
• Signatures of the quantum nature of gravity in the differential motion of two masses
• Baryon Asymmetry from the Generalized Uncertainty Principle
• Gravitational effects in macroscopic quantum systems: a first-principles analysis
• On the Significance of Interferometric Revivals for the Fundamental Description of Gravity
• Testing the quantum nature of gravity without entanglement
• Testing the nonclassicality of spacetime: what can we learn from Bell-Bose et al.-Marletto-Vedral experiments?
• Local Description of Decoherence of Quantum Superpositions by Black Holes and Other Bodies
• Test of Quantum Gravity in Statistical Mechanics
• Stochastic waveform estimation at the fundamental quantum limit
• On the origin of force sensitivity in tests of quantum gravity with delocalised mechanical systems
• Signatures of Quantum Gravity in the Gravitational Self-Interaction of Photons
• Weakly interacting Bose gases with generalized uncertainty principle: Effects of quantum gravity
• Possibility of detecting gravity of an object frozen in a spatial superposition by the Zeno effect
• A hybrid method of generating spin-squeezed states for quantum-enhanced atom interferometry
• Minimal Length Phenomenology and the Black Body Radiation
• State Swapping via Semiclassical Gravity
• Quantum decoherence of gravitational waves
• Muon accelerators -- Muon lifetime measurements as window to Planck scale physics
• Distribution of quantum gravity induced entanglement in many-body systems
• Testing quantum gravity with dilute dipolar Bose gases
• An atomic Fabry-Perot interferometer-based acceleration sensor for microgravity environments
• Benchmarks for quantum communication via gravity
• Quantum nature of gravity in a Bose-Einstein condensate