Open AccessQuantum communication based on the circuit coupled by SQUID and mesoscopic LC resonator
Author(s) -
Rui He
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.030303
Subject(s) - mesoscopic physics , josephson effect , physics , squid , qubit , quantum computer , quantization (signal processing) , quantum , quantum information science , resonator , quantum information , quantum mechanics , computer science , optoelectronics , superconductivity , biology , ecology , quantum entanglement , computer vision
The topic about how to realize quantum computation has aroused great interest of many people. The small quantum device including Josephson junction (SQUID, e.g.) is a very promising physical system to realize quantum computation. In this paper, through the discussion about the Cooper-pair number-phase quantization scheme of the circuit system coupled by SQUID and mesoscopic LC resonator, and through the rational modulation of the parameter, we derive the J-C model of this coupled circuit under the condition of two-level approximation. According to on this model, we propose a protocol which can realize the transfer of quantum information. According to this protocol, we can carry out the transfer of the charge qubits between the two SQUIDs by utilizing the mesoscopic LC resonator as the data bus.