A proposed chip-scale device combines a transmon qubit, SQUID, and nanomechanical resonator to achieve projected gravitational sensitivity of 100-1000 nGal per square root Hz with sub-millisecond interrogation times.
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A CHSH protocol using binarized Peres-time observables, calibrated to S=2 for any state in flat space, yields S>2 for a fixed Bell state in constant-curvature 1+1D backgrounds.
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Chip-scale superconducting quantum gravimeter combining a SQUID, a transmon, and a nanomechanical resonator
A proposed chip-scale device combines a transmon qubit, SQUID, and nanomechanical resonator to achieve projected gravitational sensitivity of 100-1000 nGal per square root Hz with sub-millisecond interrogation times.
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Entangled quantum clocks as operational probes of spacetime curvature
A CHSH protocol using binarized Peres-time observables, calibrated to S=2 for any state in flat space, yields S>2 for a fixed Bell state in constant-curvature 1+1D backgrounds.