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6 papers · 1 filter
Quantum Entanglement of Excitons in Coupled Quantum Dots
Ping Zhang, C. K. Chan, Qi-Kun Xue +1
Optically-controlled exciton dynamics in coupled quantum dots is studied. We show that the maximally entangled Bell states and Greenberger-Horne-Zeilinger (GHZ) states can be robus…
Quantum control of two interacting electrons in a coupled quantum dot
Ping Zhang, Xian-Geng Zhao
Quantum-state engineering, i.e., active manipulation over the coherent dynamics of suitable quantum-mechanical systems, has become a fascinating prospect of modern physics. Here we…
Dynamics of a two-component atomic Bose-Einstein condensate
Ping Zhang, C. K. Chan, Xiang-Gui Li +1
The dynamical population oscillations between two internal states of a Bose-Einstein condensate are investigated within the rotating wave approximation. Analytical expressions for…
Dynamics of spin-2 Bose condensate driven by external magnetic fields
Ping Zhang, C. K. Chan, Xiang-Gui Li +2
Dynamic response of the F=2 spinor Bose-Einstein condensate (BEC) under the influence of external magnetic fields is studied. A general formula is given for the oscillation period…
Monte-Carlo Simulation of Pulsed Laser Deposition
Pui-Man Lam, S. J. Liu, C. H. Woo
Using the Monte Carlo method, we have studied the pulsed laser deposition process at the sub-monolayer regime. In our simulations, dissociation of an atom from a cluster is incorpo…
Competing roughening mechanisms in strained heteroepitaxy: a fast kinetic Monte Carlo study
Chi-Hang Lam, Chun-Kin Lee, Leonard M. Sander
We study the morphological evolution of strained heteroepitaxial films using kinetic Monte Carlo simulations in two dimensions. A novel Green's function approach, analogous to boun…