Mixed state non-Abelian holonomy for subsystems

Details Mixed state non-Abelian holonomy for subsystems Mixed state non-Abelian holonomy for subsystems

2004-04-29

arxiv.org/abs/quant-ph/0404162v2

Phys. Rev. A 71, 012110 (2005)

Physics

Quantum Physics

Minor changes, journal reference added

Scientific paper

10.1103/PhysRevA.71.012110

Non-Abelian holonomy in dynamical systems may arise in adiabatic transport of energetically degenerate sets of states. We examine such a holonomy structure for mixtures of energetically degenerate quantal states. We demonstrate that this structure has a natural interpretation in terms of the standard Wilczek-Zee holonomy associated with a certain class of Hamiltonians that couple the system to an ancilla. The mixed state holonomy is analysed for holonomic quantum computation using ion traps.

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