Dynamics of a qubit TLS system under resonant microwave driving

We demonstrate the effect of different cou- pling strengths between a microscopic two-level system （TLS） and a microwave field on the dynamics of a qubit-- TLS system when the bipartite system is subject to reso- nant microwave driving. Rabi beating with a different TLS- microwave coupling strength...

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Bibliographic Details
Published in:Chinese science bulletin 2014-07, Vol.59 (21), p.2547-2551
Main Authors: Shi, Jianxin, Xu, Weiwei, Sun, Guozhu, Zhai, Jiquan, Du, Zhican, Wang, Lin, Hua, Tao, Chen, Jian, Kang, Lin, Wu, Peiheng
Format: Article
Language:English
Subjects:
Chemistry/Food Science
Death
Dynamical systems
Dynamics
Earth Sciences
Engineering
Entanglement
Humanities and Social Sciences
Joining
Life Sciences
Microwaves
multidisciplinary
Physics
Qubits (quantum computing)
Science
Science (multidisciplinary)
Simulation
TLS
共振
微波场
突然死亡
系统
耦合强度
量子位
驾驶
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Summary:We demonstrate the effect of different cou- pling strengths between a microscopic two-level system （TLS） and a microwave field on the dynamics of a qubit-- TLS system when the bipartite system is subject to reso- nant microwave driving. Rabi beating with a different TLS- microwave coupling strength is demonstrated in simulations. Entanglement, quantified by the concurrence between the qubit and TLS, both for pure states and mixed states, is simulated. When decoherence is considered, entanglement of the bipartite system oscillates with damping and exhibits entanglement sudden death and/or entanglement sudden death and revival.
ISSN:1001-6538
1861-9541
DOI:10.1007/s11434-014-0389-0