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Controllable Conditional Quantum Oscillations and Quantum Gate Operations in Superconducting Flux Qubits

机译:超导通量量子位中的可控条件量子振荡和量子门操作

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摘要

Conditional quantum oscillations are investigated for quantum gate operations in superconducting flux qubits. We present an effective Hamiltonian which describes a conditional quantum oscillation in two-qubit systems. Rabi-type quantum oscillations are discussed in implementing conditional quantum oscillations to quantum gate operations. Two conditional quantum oscillations depending on the states of control qubit can be synchronized to perform controlled-gate operations by varying system parameters. It is shown that the conditional quantum oscillations with their frequency synchronization make it possible to operate the controlled-NOT and -U gates with a very accurate gate performance rate in interacting qubit systems. Further, this scheme can be applicable to realize a controlled multi-qubit operation in various solid-state qubit systems.
机译:研究了超导通量量子位中量子门操作的条件量子振荡。我们提出了一种有效的哈密顿量,它描述了两个量子位系统中的条件量子振荡。在实现条件量子振荡到量子门操作中讨论了拉比型量子振荡。可以根据控制量子位的状态来同步两个条件量子振荡,以通过更改系统参数来执行受控门操作。结果表明,有条件的量子振荡及其频率同步使得在相互作用的量子位系统中以非常精确的门性能速率来操作受控的NOT和-U门成为可能。此外,该方案可适用于在各种固态量子位系统中实现受控的多量子位操作。

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  • 来源
    《Japanese journal of applied physics》 |2011年第11issue1期|p.000103-000108|共6页
  • 作者

    Ai Min Chen; Sam Young Cho;

  • 作者单位

    Centre for Modern Physics and Department of Physics, Chongqing University, Chongqing 400044, China;

    Centre for Modern Physics and Department of Physics, Chongqing University, Chongqing 400044, China;

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  • 正文语种 eng
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