Kavli Affiliate: Lee McCuller
| First 5 Authors: Sander M. Vermeulen, Torrey Cullen, Daniel Grass, Ian A. O. MacMillan, Alexander J. Ramirez
| Summary:
The GQuEST (Gravity from the Quantum Entanglement of Space-Time) experiment
uses tabletop-scale Michelson laser interferometers to probe for fluctuations
in space-time. We present a practicable interferometer design featuring a novel
photon counting readout method that provides unprecedented sensitivity, as it
is not subject to the interferometric standard quantum limit. We evaluate the
potential of this design to measure space-time fluctuations motivated by recent
`geontropic’ quantum gravity models. The accelerated accrual of Fisher
information offered by the photon counting readout enables GQuEST to detect the
predicted quantum gravity phenomena within measurement times at least 100 times
shorter than equivalent conventional interferometers. The GQuEST design thus
enables a fast and sensitive search for signatures of quantum gravity in a
laboratory-scale experiment.
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