We propose a scheme for implementing robust SWAP gate on two distant atoms that are confined in two spatially separated single-mode optical cavities connected by an optical fiber. The SWAP gate cannot be attained by using adiabatic passage for such a physical model, but we achieve it by following transitionless quantum driving, a method of shortcuts to adiabatic passage. In addition, during the execution of the SWAP gate, none of two atoms, two cavities and the fiber is excited, and thus the virtual excitations of the fiber-cavity-atom system make the scheme very robust against the atomic spontaneous radiation and the decay of the cavities and the fiber. Numerical simulations show that the SWAP gate can be attained with high fidelity, and the present scheme is insensitive to the control errors of various parameters. The scheme may have potential applications in distributed quantum computing and quantum information process in a quantum network.

中文翻译：

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通过虚拟激发和无过渡量子驱动，在两个遥远原子上具有强大的SWAP门

我们提出了一种方案，用于在两个遥远的原子上实现鲁棒的SWAP门，该原子被限制在两个通过光纤连接的空间上分离的单模光腔中。对于这种物理模型，不能通过使用绝热通道来实现SWAP门，但是我们通过遵循无过渡量子驱动（一种实现绝热通道的捷径）来实现它。此外，在执行SWAP门操作期间，两个原子，两个腔体和纤维都不会被激发，因此，纤维-腔体-原子系统的虚拟激发使该方案对原子自发辐射和衰变非常鲁棒。腔和光纤。数值仿真表明，可以高保真地实现SWAP门，并且该方案对各种参数的控制误差不敏感。