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Proposal for measurment of harmonic oscillator Berry phase in ion traps

I. Fuentes-Guridi·S. Bose·V. Vedral
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Abstract

We propose a scheme for measuring the Berry phase in the vibrational degree of freedom of a trapped ion. Starting from the ion in a vibrational coherent state we show how to reverse the sign of the coherent state amplitude by using a purely geometric phase. This can then be detected through the internal degrees of freedom of the ion. Our method can be applied to preparation of Schrödinger cat states.

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I. Fuentes-Guridi, S. Bose, V. Vedral. 2000-08-01. Proposal for measurment of harmonic oscillator Berry phase in ion traps. https://doi.org/10.1103/physrevlett.85.5018

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