Gravitational effects on entangled states and interferometer with entangled atoms

Details Gravitational effects on entangled states and interferometer with entangled atoms Gravitational effects on entangled states and interferometer with entangled atoms

2001-08-21

arxiv.org/abs/gr-qc/0108051v1

Phys.Lett. A286 (2001) 102-106

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 3 figures

Scientific paper

10.1016/S0375-9601(01)00399-1

It is discussed how systems of quantum-correlated (entangled)particles or atoms behave in external gravitational fields and what gravitational effects may exist in such systems. An experimental setup is proposed which improves the sensitivity of the Ramsey interferometer by the usage of quantum-correlated atoms. Entanglement of $n$ atoms improves the sensitivity to small phase shifts in $n^2$ times. This scheme may be used for observing gravity-induced phase shifts in laboratory.

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