Work

Truly relativistic gravity mediated entanglement protocol using superpositions of rotational energies

Year: 2024

Type: article

Abstract: Experimental proposals for testing quantum gravity-induced entanglement of masses (QGEM) typically involve two interacting masses which are each in a spatial superposition state. Here, we propose instead a QGEM experiment with two particles which are each in a superposition of rotational states; this amounts to a superposition of mass through mass-energy equivalence. In sharp contrast to the typical protocols studied, our proposal is genuinely relativistic. It does not consider a quantum positional degree of freedom and but relies on the fact that rotational energy gravitates: the effect we consider disappears in the c → ∞ limit. Furthermore, this approach would test a feature unique to gravity since it amounts to sourcing a spacetime in superposition due to a superposition of “charge.” Published by the American Physical Society 2024

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.110.l101901

Authors: Gerard Higgins, Andrea Di Biagio, Marios Christodoulou

Institutions: Austrian Academy of Sciences, Institute for Quantum Optics and Quantum Information Innsbruck, Chalmers University of Technology

Language: English

Topic: Noncommutative and Quantum Gravity Theories

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: John Templeton Foundation, Austrian Science Fund, Vetenskapsrådet

Awards: Levitated Superconductors for Dark Matter Search, Testing quantum physics in uncharted territory using a magneto-mechanical oscillator, The Quantum Information Structure of Spacetime (QISS)