Publications (10)
Effective Hamiltonian Approach to Open Systems and Its Applications
X. L. Huang, X. X. Yi, Chunfeng Wu +3
By using the effective Hamiltonian approach, we present a self-consistent framework for the analysis of geometric phases and dynamically stable decoherence-free subspaces in open s…
Approach to the semiconductor cavity QED in high-Q regimes with q-deformed boson
Yu-Xi Liu, C. P Sun, S. X. Yu +1
The high density Frenkel exciton which interacts with a single mode microcavity field is dealed with in the framework of the q-deformed boson. It is shown that the q-defomation of…
Singularity of dynamical maps
S. C. Hou, X. X. Yi, S. X. Yu +1
For a dynamical map , which sends a state of quantum open system to a state , the decomposition law may break down…
Gardiner's phonon for Bose-Einstein Condensation: A physical realization of the -deformed Boson
C. P. Sun, S. X. Yu, Y. B. Gao
The Gardiner's phonon presented for a particle-number conserving approximation method to describe the dynamics of Bose-Einstein Condesation (BEC) (C.W. Gardiner, Phys. Rev. A 56, 1…
Quotient Construction of 't Hooft's Quantum Equivalence Classes
C. P. Sun X. F. Liu, S. X. Yu
Most recently 't Hooft has postulated (G 't Hooft, Class. Quant. Grav. 16 (1999) 3263-3279) that quantum states at the ``atomic scale''can be understood as equivalence classes of p…
Quantum decoherence of excitons in a leaky cavity with quasimode
Yu-xi Liu, C. P. Sun, S. X. Yu
For the excitons in the quantum well placed within a leaky cavity, the quantum decoherence of a mesoscopically superposed states is investigated based on the factorization theory f…
An alternative non-Markovianity measure by divisibility of dynamical map
S. C. Hou, X. X. Yi, S. X. Yu +1
Identifying non-Markovianity with non-divisibility, we propose a measure for non-Markovinity of quantum process. Three examples are presented to illustrate the non-Markovianity, me…
Effective Hamiltonian Approach to the Master Equation
X. X. Yi, S. X. Yu
A method of exactly solving the master equation is presented in this letter. The explicit form of the solution is determined by the time evolution of a composite system including a…
Quantum control limited by quantum decoherence
Fei Xue, S. X. Yu, C. P. Sun
We describe quantum controllability under the influences of the quantum decoherence induced by the quantum control itself. It is shown that, when the controller is considered as a…
Localization of Macroscopic Object Induced by the Factorization of Internal Adiabatic Motion
C. P. Sun, X. F. liu, D. L. Zhou +1
To account for the phenomenon of quantum decoherence of a macroscopic object, such as the localization and disappearance of interference, we invoke the adiabatic quantum entangleme…