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arXiv 1507.02540quant-ph
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空间分离大质量谐振腔间的纠缠相干态

Heralded entangled coherent states between spatially separated massive resonators

Ali Asadian, Mehdi Abdi

摘要:

我们提出了一个实验上可行的方案,在两个相距较远的宏观机械谐振器之间产生预示纠缠。该协议利用了一个混合量子设备,一个量子比特与机械谐振器以及腔模相互作用,为每一方。腔模在分束器上干涉,然后进行适当的预示检测,以1/2的成功概率后选择混合纠缠态。随后,通过对量子比特的局部测量,可以获得机械纠缠相干态。机械纠缠可以通过监测量子比特对的纠缠来进一步验证。该装置被设想为一个测试台,用于感测引力耦合大质量物体的量子动力学引力效应。作为一个具体的例子,我们说明了我们的协议使用当前的电路QED架构的实现。

英文摘要:

We put forward an experimentally feasible scheme for heralded entanglement generation between two distant macroscopic mechanical resonators. The protocol exploits a hybrid quantum device, a qubit interacting with a mechanical resonator as well as a cavity mode, for each party. The cavity modes interfere on a beam-splitter followed by suitable heralding detections which post-select a hybrid entangled state with success probability 1/2. Subsequently, by local measurements on the qubits a mechanical entangled coherent state can be achieved. The mechanical entanglement can be further verified via monitoring the entanglement of the qubit pair. The setup is envisioned as a test bench for sensing gravitational effects on the quantum dynamics of gravitationally coupled massive objects. As a concrete example, we illustrate the implementation of our protocol using the current circuit QED architectures.

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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