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.
A Spin-Based Pathway to Testing the Quantum Nature of Gravity
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Stern-Gerlach interferometer implementations differ dramatically in transverse-field sensitivity, so only some sequences maintain high fringe visibility with Rydberg atoms.
Virtual graviton exchange between a photon and a high-spinning quantum rotor generates entanglement between photon degrees of freedom and rotor position, with prograde-retrograde motion yielding observable differences in linear entanglement entropy.
A matter-wave interferometer with a Schrödinger cat state displaces the graviton vacuum into coherent states, with the left-right overlap providing a gravitational contrast that quantifies entanglement between matter and the quantized gravitational field.
A rotating all-optical saddle trap for levitated nanoparticles enables reduced decoherence, large motional delocalization, and zepto-Newton force detection in mesoscopic quantum experiments.
citing papers explorer
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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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Stern-Gerlach interferometry in three dimensions: the role of transverse fields
Stern-Gerlach interferometer implementations differ dramatically in transverse-field sensitivity, so only some sequences maintain high fringe visibility with Rydberg atoms.
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Graviton-mediated entanglement due to light bending from a quantum rotor
Virtual graviton exchange between a photon and a high-spinning quantum rotor generates entanglement between photon degrees of freedom and rotor position, with prograde-retrograde motion yielding observable differences in linear entanglement entropy.
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Quantum gravitational contrast in creating Schr\"odinger cat state
A matter-wave interferometer with a Schrödinger cat state displaces the graviton vacuum into coherent states, with the left-right overlap providing a gravitational contrast that quantifies entanglement between matter and the quantized gravitational field.
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All-optical saddle trap as a platform for mesoscopic quantum experiments
A rotating all-optical saddle trap for levitated nanoparticles enables reduced decoherence, large motional delocalization, and zepto-Newton force detection in mesoscopic quantum experiments.