论文标题
在基于电路的量子计算机上实施一般的单量子正算子值衡量标准
Implementation of a general single-qubit positive operator-valued measure on a circuit-based quantum computer
论文作者
论文摘要
我们得出了确定的协议，以在基于近期电路的量子计算机上实现一般的单量POVM。该协议具有模块化结构，因此将$ n $ element POVM作为$（n-1）$电路模块实现。每个模块执行$ 2 $ - 元素的POVM。提出了两个方案的两种变体，一个是Ancilla Qubits数量最佳的，另一个是量子门操作数量和量子电路深度的最佳选择。我们使用该协议在两个公开可用的量子计算设备上实现$ 2 $ - 和$ 3 $ emlement povms。我们获得的结果表明，实施非平凡的POVM可以在当前嘈杂的量子计算设备的范围内。
We derive a deterministic protocol to implement a general single-qubit POVM on near-term circuit-based quantum computers. The protocol has a modular structure, such that an $n$-element POVM is implemented as a sequence of $(n-1)$ circuit modules. Each module performs a $2$-element POVM. Two variations of the protocol are suggested, one optimal in terms of number of ancilla qubits, the other optimal in terms of number of qubit gate operations and quantum circuit depth. We use the protocol to implement $2$- and $3$-element POVMs on two publicly available quantum computing devices. The results we obtain suggest that implementing non-trivial POVMs could be within the reach of the current noisy quantum computing devices.
