论文标题
可编程的定向发射器和波导中巡回微波光子的接收器
Programmable directional emitter and receiver of itinerant microwave photons in a waveguide
论文作者
论文摘要
从理论上讲，我们在波导中表现出动态选择性的双向发射和单个巡回微波光子的吸收。提出的设备是一个人工分子，该分子由两个量子位与波导相距四分之一波长组成。通过基于输入 - 输出理论的仿真，我们表明，在准备两个量子位的适当纠缠状态后，由于在量子位的右侧或左侧发生的破坏性干扰而导致光子定向发射光子。此外，我们证明该人工分子具有吸收和传输传入光子按需的能力，这对于创建完全相互连接的一维量子网络所必需的特征，其中可以在任何两个给定节点之间交换量子信息。
We theoretically demonstrate dynamically selective bidirectional emission and absorption of a single itinerant microwave photon in a waveguide. The proposed device is an artificial molecule composed of two qubits coupled to a waveguide a quarter-wavelength apart. By using simulations based on the input--output theory, we show that upon preparing an appropriate entangled state of the two qubits, a photon is emitted directionally as a result of the destructive interference occurring either at the right or left of the qubits. Moreover, we demonstrate that this artificial molecule possesses the capability of absorbing and transmitting an incoming photon on-demand, a feature essential to the creation of a fully inter-connected one-dimensional quantum network, in which quantum information can be exchanged between any two given nodes.
