Quantum switch in the gravity of Earth

Abstract

We introduce a protocol for a quantum switch in the gravitational field of a spherical mass and determine the time interval required for its realization in the gravity of Earth. One of the agents that perform operations with indefinite order is a quantum system in a path superposition state. Entanglement between its proper time and position is explored as a resource for the implementation of the quantum switch. The realization of the proposed protocol would probe the physical regime described by quantum mechanics on curved spacetimes, which has not yet been explored experimentally.

arXiv comment11 pages, 2 figures, revised version

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Cited by in corpus (6)

• Causal structure in the presence of sectorial constraints, with application to the quantum switch
• Gravitational quantum switch on a superposition of spherical shells
• Decoherence of a composite particle induced by a weak quantized gravitational field
• Quantized Area of the Schwarzschild Black Hole: A non-Hermitian Perspective
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