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Berry phase from a quantum Zeno effect

✍ Scribed by P. Facchi; A.G. Klein; S. Pascazio; L.S. Schulman

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
109 KB
Volume
257
Category
Article
ISSN
0375-9601

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✦ Synopsis

We exhibit a specific implementation of the creation of geometrical phase through the state-space evolution generated by the dynamic quantum Zeno effect. That is, a system is guided through a closed loop in Hilbert space by means a sequence of closely spaced projections leading to a phase difference with respect to the original state. Our goal is the proposal of a specific experimental setup in which this phase could be created and observed. To this end we study the case of neutron spin, examine the practical aspects of realizing the 'projections', and estimate the difference between the idealized projections and the experimental implementation.

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