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arXiv 2103.13095quant-ph
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远程量子网络模块间的量子逻辑门

A Quantum-Logic Gate between Distant Quantum-Network Modules

Severin Daiss, Stefan Langenfeld, Stephan Welte, Emanuele Distante, Philip Thomas, Lukas Hartung, Olivier Morin, Gerhard Rempe

摘要:

量子计算面临的最大挑战是实现可扩展的多量子比特系统,该系统具有无串扰的寻址能力和任意选择的量子比特的有效耦合。量子网络通过将较小的量子位模块集成到较大的计算集群中来提供解决方案。然而,这种分布式架构需要在遥远的量子位之间执行量子逻辑门的能力。在这里,我们实验性地实现了这样一个门超过60米的距离。我们采用了一个辅助光子,我们连续地从两个远程量子位模块反射,随后是一个预示光子检测,触发最终的量子位旋转。我们使用门远程纠缠创造所有四个贝尔态。我们的非定域量子逻辑门可以扩展到多个量子位和许多模块,用于量身定制的多量子位计算寄存器。

英文摘要:

The big challenge in quantum computing is to realize scalable multi-qubit systems with cross-talk free addressability and efficient coupling of arbitrarily selected qubits. Quantum networks promise a solution by integrating smaller qubit modules to a larger computing cluster. Such a distributed architecture, however, requires the capability to execute quantum-logic gates between distant qubits. Here we experimentally realize such a gate over a distance of 60m. We employ an ancillary photon that we successively reflect from two remote qubit modules, followed by a heralding photon detection which triggers a final qubit rotation. We use the gate for remote entanglement creation of all four Bell states. Our non-local quantum-logic gate could be extended both to multiple qubits and many modules for a tailor-made multi-qubit computing register.

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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