6533b874fe1ef96bd12d642a
RESEARCH PRODUCT
Observable geometric phase induced by a cyclically evolving dissipative process
G. Massimo PalmaAngelo Carollosubject
DECOHERENCEPhysicsQuantum PhysicsBerry phaseProcess (computing)Atom (order theory)FOS: Physical sciencesObservableSQUEEZED-LIGHTMarkovian processCondensed Matter PhysicsIndustrial and Manufacturing EngineeringAtomic and Molecular Physics and OpticsQUANTUM COMPUTATIONClassical mechanicsGeometric phaseQuantum systemDissipative systemGround stateQuantum Physics (quant-ph)InstrumentationClosed loopdescription
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
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-01-01 |