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Classical and quantum depinning of a domain wall with a spin-polarized current
Xin Liu, Xiong-Jun Liu, Zheng-Xin Liu
We study in detail the classical and quantum depinning of a domain wall (DW) induced by a fast-varying spin-polarized current. By confirming the adiabatic condition for calculating…
Possibility of Inhomogeneous Coupling Leading to Decoherence in an Electromagnetically-Induced-Transparency Quantum-Memory Process
Xiong-Jun Liu, Zheng-Xin Liu, Xin Liu +1
The effect of inhomogeneous coupling between three-level atoms and external light fields is studied in the electromagnetically induced transparency (EIT) quantum memory techqnique.…
Quantum Spin Current Induced Through Optical Fields
Xiong-Jun Liu, Xin Liu, L. C. Kwek +2
We propose a scheme to generate quantum spin current via optical dipole transition process. By coupling a three-level system based on the spin states of charged particles (electron…
A Scheme of Generating and Spatially Separating Two-Component Entangled Atom Lasers
Xiong-Jun Liu, Hui Jing, Xin Liu +2
Entanglement of remote atom lasers is obtained via quantum state transfer technique from lights to matter waves in a five-level -type system. The considered atom-atom collisions…