Mach-Zehnder interferometry with interacting trapped Bose-Einstein condensates

Details Mach-Zehnder interferometry with interacting trapped Bose-Einstein condensates Mach-Zehnder interferometry with interacting trapped Bose-Einstein condensates

2010-10-15

arxiv.org/abs/1010.3273v3

Phys. Rev. A 84, 023619 (2011)

Physics

Quantum Physics

4 pages, 5 figures, minor revisions

Scientific paper

10.1103/PhysRevA.84.023619

We theoretically analyze a Mach-Zehnder interferometer with trapped condensates, and find that it is surprisingly stable against the nonlinearity induced by inter-particle interactions. The phase sensitivity, which we study for number squeezed input states, can overcome the shot noise limit and be increased up to the Heisenberg limit provided that a Bayesian or Maximum-Likelihood phase estimation strategy is used. We finally demonstrate robustness of the Mach-Zehnder interferometer in presence of interactions against condensate oscillations and a realistic atom counting error.

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