منابع مشابه
Decoherence by engineered quantum baths
Davide Rossini, Tommaso Calarco, 3 Vittorio Giovannetti, Simone Montangero, 4 and Rosario Fazio 1 NEST-CNR-INFM & Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy Dipartimento di Fisica, Università di Trento and BEC-CNR-INFM, I-38050 Povo, Italy ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA Institut für Theoretische Festkörperphysik, Universit...
متن کاملTransition of decoherence and entanglement induced by interaction quantum spin baths
We investigate the reduced dynamics of two qubits coupled to an interacting quantum spin bath modeled by a XXZ spin chain. By using the method of time-dependent density matrix renormalization group (t-DMRG), it is shown that when the spin bath is in an ordering state, the reduced dynamics of qubits strongly depends on the range of the spin chain that qubits coupled to. Only for ordering spin ba...
متن کاملDecoherence control by quantum decoherence itself
We propose a general approach of protecting a two-level system against decoherence via quantum engineering of non-classical multiple superpositions of coherent states in a non-Markovian reservoir. The scheme surprisingly only uses the system-environment interaction responsible for the decoherence and projective measurements of the two-level system. We demonstrate the method on the example of an...
متن کاملThermalization of quantum systems by finite baths
– We consider a discrete quantum system coupled to a finite bath, which may consist of only one particle, in contrast to the standard baths which usually consist of continua of oscillators, spins, etc. We find that such finite baths may nevertheless equilibrate the system though not necessarily in the way predicted by standard open system techniques. This behavior results regardless of the init...
متن کاملVibrational spectra of polyatomic molecules assisted by quantum thermal baths.
We assess the performance of colored-noise thermostats to generate quantum mechanical initial conditions for molecular dynamics simulations, in the context of infrared spectra of large polyatomic molecules. Comparison with centroid molecular dynamics simulations taken as reference shows that the method is accurate in predicting line shifts and band widths in the ionic cluster (NaCl)(32) and in ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics A: Mathematical and Theoretical
سال: 2007
ISSN: 1751-8113,1751-8121
DOI: 10.1088/1751-8113/40/28/s12