Journal
PRX QUANTUM
Volume 2, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PRXQuantum.2.030330
Keywords
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Funding
- Jet Propulsion Laboratory [1652036]
- Office of Naval Research [GRANT12980618, N00014-20-1-2656]
- National Science Foundation [1708160]
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Researchers suggest that quantizing gravitational perturbations into gravitons may lead to entangling interactions between massive objects. They introduce a novel sensing protocol for proving weak dynamical entanglement generation between systems, showing its robustness to thermal noise sources. The sensitivity can be increased through initial thermal states or initial entanglement phases via non-gravitational interactions.
If gravitational perturbations are quantized into gravitons in analogy with the electromagnetic field and photons, the resulting graviton interactions should lead to an entangling interaction between massive objects. We suggest a test of this prediction. To do this, we introduce the concept of interactive quantum information sensing. This novel sensing protocol is tailored to provable verification of weak dynamical entanglement generation between a pair of systems. We show that this protocol is highly robust to typical thermal noise sources. Moreover, the sensitivity can be increased both using an initial thermal state and/or an initial phase of entangling via a nongravitational interaction. We outline a concrete implementation testing the ability of the gravitational field to generate entanglement between an atomic interferometer and a mechanical oscillator. Preliminary numerical estimates suggest that near-term devices could feasibly be used to perform the experiment.
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