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arXiv 0704.0546cond-mat.mes-hallcond-mat.supr-con
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超导量子干涉器件中的持续电流

Persistent Currents in Superconducting Quantum Interference Devices

F. Romeo, R. De Luca

摘要:

从双结量子干涉器件的简化动力学模型出发,展示了该系统的量子模拟,以便将该器件的众所周知的特性扩展到量子区域。通过求出相应哈密顿算符的本征值,得到了环中的持续电流。由此产生的过阻尼双结量子干涉器件的量子模拟可以被看作是在可忽略的电容和有限电感的极限下操作的超导量子比特。

英文摘要:

Starting from the reduced dynamical model of a two-junction quantum interference device, a quantum analog of the system has been exhibited, in order to extend the well known properties of this device to the quantum regime. By finding eigenvalues of the corresponding Hamiltonian operator, the persistent currents flowing in the ring have been obtained. The resulting quantum analog of the overdamped two-junction quantum interference device can be seen as a supercurrent qubit operating in the limit of negligible capacitance and finite inductance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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