Stark-Chirped Rapid Adiabatic Passage in Presence of Dissipation for Quantum Computation  

作　　者：石轩 C.H.Oh 韦联福 

机构地区：[1]Quantum Optoelectronics Laboratory, School of Physics and Technology, Southwest Jiaotong University [2]Centre for Quantum Technologies and Department of Physics, National University of Singapore [3]State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics Science and Engineering, Sun Yet-sen University

出　　处：《Communications in Theoretical Physics》2014年第2期235-240,共6页理论物理通讯（英文版）

基　　金：Supported by the National Science Foundation under Grant Nos.90921010,11174373;the National Fundamental Research Program of China under Grant No.2010CB923104;National Research Foundation and Ministry of Education,Singapore under Grant No.WBS:R-710-000-008-271;the 2013 Doctoral Innovation funds of Southwest Jiaotong University;the Fundamental Research Funds for the Central Universities

摘　　要：Stark-chirped rapid adiabatic passage(SCRAP) is an important technique used for coherent quantum controls. In this paper we investigate how the practically-existing dissipation of the system influences on the efficiency of the passage, and thus the fidelities of the SCRAP-based quantum gates. With flux-biased Josephson qubits as a specifical example, our results show clearly that the efficiency of the logic gates implemented by SCRAP are robust against the weak dissipation. The influence due to the non-adiabtic transitions between the adiabatic passages is comparatively significantly small. Therefore, the SCRAP-based logic gates should be feasible for the realistic physical systems with noises.

关 键 词：adiabatic passage DISSIPATION quantum computation 

分 类 号：O413[理学—理论物理]