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Spin-1/2 geometric phase driven by decohering quantum fields
A Carollo1, I Fuentes-Guridi, M França Santos
1Optics Section, The Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom.
Physical Review Letters
|February 3, 2004
Abstract:
We calculate the geometric phase of a spin-1/2 system driven by one and two mode quantum fields subject to decoherence. Using the quantum jump approach, we show that the corrections to the phase in the no-jump trajectory are different when considering adiabatic and nonadiabatic evolutions. We discuss the implications of our results from both fundamental as well as quantum computational perspectives.