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arXiv 1802.08124quant-ph
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用于分布式纠缠和量子计算的确定性量子网络

Deterministic Quantum Network for Distributed Entanglement and Quantum Computation

I. Cohen, K. Mølmer

摘要:

我们提出了一个简单的相互作用协议上实现的可扩展的量子网络,其中的量子节点由量子比特系统局限在腔。节点通过单个光子的传输和反射确定性地耦合,该光子在耦合操作结束时从量子比特解纠缠。这个单光子可以在网络中任何选定数量的量子位之间生成纠缠控制相位(C-PHASE)门。我们的多量子比特门达到了更高的保真度相比,方案级联的一个量子比特和两个量子比特门,因此,它形成了一个有效的基础上,分布在多个处理器单元的通用量子计算。在我们的分析中,我们考虑原子量子位耦合到可见光子,而该方案可以很容易地推广到其他架构,如超导量子位节点耦合微波光子。

英文摘要:

We propose a simple interaction protocol to be implemented on a scalable quantum network, in which the quantum nodes consist of qubit systems confined in cavities. The nodes are deterministically coupled by transmission and reflection of a single photon, which is disentangled from the qubits at the end of the coupling operation. This single photon can generate an entangling controlled phase (C-PHASE) gate between any selected number of qubits in the network. Our multi-qubit gate reaches a much higher fidelity compared to schemes concatenating one-qubit and two-qubit gates; thus it forms an efficient basis for universal quantum computing distributed over multiple processor units. In our analysis we consider atomic qubits coupled to optical photons, while the scheme can be readily generalized to other architectures, such as superconducting qubit nodes coupled by microwave photons.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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