论文标题
使用超导电路生成复杂的微波图状态的建议
Proposal for generating complex microwave graph states using superconducting circuits
论文作者
论文摘要
微波光子图状态为使用微波光子之间的远程超导芯片之间的稳健量子通信提供了一种有希望的方法。最近，Besse等。 [Nat。社区。 11，4887（2020）]证明可以使用两个Transmon Qubit生成1D图状态。在本文中，我们建议使用与其他微波设备结合使用的Transmon Qubits来构建更复杂的图形状态。具体而言，我们考虑2D晶格和类似树状的图形状态。我们使用固定与可调频率的transmon Qub和不同的光子量子量子器编码比较性能。在每种情况下，我们都会估计产生的微波图状态的保真度，假设当前的实验参数并确定限制性能的主要因素。
Microwave photonic graph states provide a promising approach for robust quantum communication between remote superconducting chips using microwave photons. Recently, Besse et al. [Nat. Commun. 11, 4887 (2020)] demonstrated that 1D graph states can be generated using two transmon qubits. In this paper, we propose to use transmon qubits combined with other microwave devices to construct more complex graph states. Specifically, we consider 2D lattice and tree-like graph states. We compare the performance using fixed- versus tunable-frequency transmon qubits and also for different photonic qubit encodings. In each case, we estimate the fidelity of the resulting microwave graph state assuming current experimental parameters and identify the main factors that limit performance.
