3 papers
quant-ph2003
Noisy Control, the Adiabatic Geometric Phase, and Destruction of the Efficiency of Geometric Quantum Computation
Frank Gaitan
We examine the adiabatic dynamics of a quantum system coupled to a noisy classical control field. A stochastic phase shift is shown to arise in the off-diagonal elements of the sys…
quant-ph1998
Berry's Phase in the Presence of a Non-Adiabatic Environment
Frank Gaitan
We consider a two-level system coupled to an environment that evolves non-adiabatically. We present a non-perturbative method for determining the persistence amplitude whose phase…
cond-mat1995
Berry's Phase, Josephson's Equation, and the Dynamics of Weak Link Superconductors and Their Vortices
Frank Gaitan, Subodh R. Shenoy
We examine the dynamical consequences of Berry's phase for Josephson junctions, junction arrays, and their vortices. Josephson's equation and the related phase slip voltages are sh…