Interactive quantum information sensing and a test of quantum gravitational communication

Published

September 15, 2021

Author(s)

Jacob Taylor, Daniel Carney, H Muller

Abstract

We suggest a test of a central prediction of perturbatively quantized general relativity: the coherent communication of quantum information between massive objects through gravity. To do this, we introduce the concept of interactive quantum information sensing, a protocol tailored to the verification of dynamical entanglement generation between a pair of systems. Concretely, we propose to monitor the periodic wavefunction collapse and revival in an atomic interferometer which is gravitationally coupled to a mechanical oscillator. We prove a theorem which shows that, under the assumption of time-translation invariance, this collapse and revival is possible if and only if the gravitational interaction forms an entangling channel. Remarkably, as this approach improves at moderate temperatures and relies primarily upon atomic coherence, our numerical estimates indicate feasibility with current devices.

Citation

Nature Physics

Pub Type

Journals

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Keywords

Atom interferometry, gravity

Citation

Taylor, J. , Carney, D. and Muller, H. (2021), Interactive quantum information sensing and a test of quantum gravitational communication, Nature Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=931641 (Accessed May 1, 2024)