Observable geometric phase induced by a cyclically evolving dissipative process

Details Observable geometric phase induced by a cyclically evolving dissipative process Observable geometric phase induced by a cyclically evolving dissipative process

2006-10-17

arxiv.org/abs/quant-ph/0610139v1

Laser Physics 16 (N 11), 1595-1600, (2006)

Physics

Quantum Physics

6 pages, 1 figure

Scientific paper

10.1134/S1054660X06110132

In a prevous paper (Phys. Rev. Lett. 96, 150403 (2006)) we have proposed a new way to generate an observable geometric phase on a quantum system by means of a completely incoherent phenomenon. The basic idea was to force the ground state of the system to evolve ciclically by "adiabatically" manipulating the environment with which it interacts. The specific scheme we have previously analyzed, consisting of a multilevel atom interacting with a broad-band squeezed vacuum bosonic bath whose squeezing parameters are smoothly changed in time along a closed loop, is here solved in a more direct way. This new solution emphasizes how the geometric phase on the ground state of the system is indeed due to a purely incoherent dynamics

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