Reply to `Singularities of the mixed state phase'
J. Anandan, E. Sjöqvist, A. K. Pati, A. Ekert, M. Ericsson, D. K. L. Oi, V. Vedral
Abstract
The only difference between Bhandari's viewpoint [quant-ph/0108058] and ours [Phys. Rev. Lett. 85, 2845 (2000)] is that our phase is defined modulo 2π, whereas Bhandari argues that two phases that differ by 2πn, n integer, may be distinguished experimentally in a history-dependent manner.
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