Study of the Aharonov-Anandan Phase by NMR Interferometry
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1988-03
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The American Physical Society
Abstract
Aharonov and Anandan have recently reformulated and generalized Berry’s phase by showing that a quantum system which evolves through a circuit C in projective Hilbert space acquires a geometrical phase β(C) related to the topology of the space and the geometry of the circuit. We present NMR interferometry experiments in a three-level system which demonstrate the Aharonov-Anandan phase and its topological invariance for different circuits.
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D. Suter, K.T. Mueller, and A. Pines: Study of the Aharonov-Anandan Phase by NMR Interferometry. In: Phys. Rev. Lett. 60, pp 1218-1220 (1988).