Observable geometric phase induced by a cyclically evolving dissipative process

Abstract

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

6 pages, 1 figure

References in corpus (11)

• Decoherence Free Subspaces for Quantum Computation
• Noiseless Quantum Codes
• Quantum Computers and Dissipation
• Geometric quantum computation with NMR
• Preserving coherence in quantum computation by pairing quantum bits
• Geometric phase in open systems
• Geometric Quantum Computation
• Berry phase for a spin 1/2 in a classical fluctuating field
• Spin-1/2 geometric phase driven by decohering quantum fields
• Geometric phase induced by a cyclically evolving squeezed vacuum reservoir
• Coherent evolution via reservoir driven holonomy

Cited by in corpus (5)

• Nonadiabatic coherent evolution of two-level systems under spontaneous decay
• Journeys from Quantum Optics to Quantum Technology
• Time-dependent Decoherence-Free Subspace
• Suppression of non-adiabatic phases by a non-Markovian environment: easier observation of Berry phases
• Decoherence-free evolution of time-dependent superposition states of two-level systems and thermal effects