A PPT witness criterion is proposed to detect graviton-mediated entanglement between photons and matter qubits, attaining a maximal negativity of -0.052 for non-maximally entangled states when the photon coherent-state overlap satisfies 0.71 ≤ |γ| < 1.
Mesoscopic inter- ference for metric and curvature (MIMAC) and gravita- tional waves
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Gravitational interaction generates entanglement in two mesoscopic particles even with decoherence if coupling is strong, with computed optimal duration and a device-independent verification condition.
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Witnessing entanglement between photon and matter due to graviton exchange
A PPT witness criterion is proposed to detect graviton-mediated entanglement between photons and matter qubits, attaining a maximal negativity of -0.052 for non-maximally entangled states when the photon coherent-state overlap satisfies 0.71 ≤ |γ| < 1.
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Entanglement dynamics of two mesoscopic objects with gravitational interaction
Gravitational interaction generates entanglement in two mesoscopic particles even with decoherence if coupling is strong, with computed optimal duration and a device-independent verification condition.