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	Microscopic Description of Spontaneous Emission in Stark Chirped Rapid Adiabatic Passages
	Shi, Xuan; Yuan, Hao; Zhao, Hong-Quan
	2018
摘要	A microscopic approach describing the effect of spontaneous emission in the stark-chirped rapid adiabatic passages (SCRAPs) for quantum computation is presented. Apart from the phenomenological model, this microscopic one can investigate the dependence of the population dynamics both on the temperature of the environment and the decay rate gamma. With flux-biased Josephson qubits as a specifical example, we study the efficiency of the SCRAP for realizing the basic Pauli-X and iSWAP gates. Our results show clearly that the behavior of the population transfer described by the microscopic model is similar with the phenomenological one at zero temperature. In the limit of very high temperature, the population probabilities of the qubit states exhibit strong stability properties. High efficiency for the quantum gate manipulations in SCRAPs is available against the weak decay rate gamma << 1 at low temperature.
关键词	Spontaneous emission Stark-chirped rapid adiabatic passage Microscopic approach
DOI	10.1007/s10773-017-3535-z
发表期刊	INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
ISSN	0020-7748
卷号	57期号:1页码:9-19
通讯作者	Shi, X (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Ctr Quantum Informat Technol, Chongqing 400714, Peoples R China.
收录类别	SCI
WOS记录号	WOS:000419161500002
语种	英语