Frontiers of quantum physics

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Geometric Phases and Topological Quantum Computation

(2002)
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Singularities of the mixed state phase (multiple letters)

Physical Review Letters 89:26 (2002)

Authors:

R Bhandari, A Jeeva, E Sjoqvist, M Ericsson, AK Pati, DKL Oi, A Ekert, V Vedral

Singularities of the mixed state phase (multiple letters)

Physical Review Letters 89:26 (2002)

Authors:

R Bhandari, A Jeeva, E Sjoqvist, AK Pati, A Ekert, M Ericsson, DKL Oi, V Vedral

Vacuum induced spin-1/2 Berry's phase.

Phys Rev Lett 89:22 (2002) 220404

Authors:

I Fuentes-Guridi, A Carollo, S Bose, V Vedral

Abstract:

We calculate the Berry phase of a spin-1/2 particle in a magnetic field considering the quantum nature of the field. The phase reduces to the standard Berry phase in the semiclassical limit and the eigenstate of the particle acquires a phase in the vacuum. We also show how to generate a vacuum induced Berry phase considering two quantized modes of the field which has an interesting physical interpretation.
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Eavesdropping on practical quantum cryptography

(2002)

Authors:

Mark Williamson, Vlatko Vedral
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