论文标题
高保真控制的简单实施 - $ i $ swap门和非省门的量子电路开发
Simple implementation of high fidelity controlled-$i$SWAP gates and quantum circuit exponentiation of non-Hermitian gates
论文作者
论文摘要
$ i $交换门是一个纠结的交换门，如果换量表的状态，则量子位获得$ i $的阶段。在这里，我们提出了可控的-I $交换门的简单实现。该栅极可以通过多个控件实现，并通过应用单个通量脉冲来起作用。栅极时间独立于控件的数量，我们为任何数量的控件找到高保真度。我们使用超导电路讨论了闸门的实现，并提出了一个现实的实现建议，在该提案中，我们通过模拟可能的错误，在其中考虑了超导芯片上的噪声和制造错误。但是，本文提出的一般思想不仅限于这种实现。在某些量子信息方案中需要对量子门进行凸出，因此我们还提出了一个量子电路，用于概率凸起$ i $ swap门和其他非温和门。
The $i$swap gate is an entangling swapping gate where the qubits obtain a phase of $i$ if the state of the qubits is swapped. Here we present a simple implementation of the controlled-$i$swap gate. The gate can be implemented with several controls and works by applying a single flux pulse. The gate time is independent of the number of controls, and we find high fidelities for any number of controls. We discuss an implementation of the gates using superconducting circuits and present a realistic implementation proposal, where we have taken decoherence noise and fabrication errors on the superconducting chip in to account, by Monte Carlo simulating possible errors. The general idea presented in this paper is, however, not limited to such implementations. An exponentiation of quantum gates is desired in some quantum information schemes and we therefore also present a quantum circuit for probabilistic exponentiating the $i$swap gate and other non-Hermitian gates.
