Imaging Stars with Quantum Error Correction.
Imaging Stars with Quantum Error Correction.
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DOI：
10.1103/physrevlett.129.210502
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发表时间：
2022-04
影响因子：
8.6
通讯作者：
Zixin Huang;G. Brennen;Yingkai Ouyang
中科院分区：
文献类型：
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作者：
Zixin Huang;G. Brennen;Yingkai Ouyang
高分辨率、大基线光学干涉仪的发展将彻底改变天文成像。然而，经典技术受到物理限制的阻碍，包括损耗、噪声和接收到的光通常是量子性质的事实。我们展示了如何使用量子通信技术来克服这些问题。我们提出了一个使用量子纠错码来保护和成像远距离望远镜站点接收到的星光的一般框架。在我们的方案中，光的量子态通过受激拉曼绝热通道被相干地捕获到非辐射原子态，然后被印记到量子纠错码中。该代码在提取图像参数所需的后续潜在噪声操作期间保护信号。我们表明，即使是一个很小的量子纠错码也可以提供显著的抗噪声保护。对于大码，我们找到噪声阈值，低于该阈值信息可以被保存。我们的方案代表了近期量子设备的一个应用，它可以提高成像分辨率，超过使用经典技术的可行范围。
The development of high-resolution, large-baseline optical interferometers would revolutionize astronomical imaging. However, classical techniques are hindered by physical limitations including loss, noise, and the fact that the received light is generally quantum in nature. We show how to overcome these issues using quantum communication techniques. We present a general framework for using quantum error correction codes for protecting and imaging starlight received at distant telescope sites. In our scheme, the quantum state of light is coherently captured into a nonradiative atomic state via stimulated Raman adiabatic passage, which is then imprinted into a quantum error correction code. The code protects the signal during subsequent potentially noisy operations necessary to extract the image parameters. We show that even a small quantum error correction code can offer significant protection against noise. For large codes, we find noise thresholds below which the information can be preserved. Our scheme represents an application for near-term quantum devices that can increase imaging resolution beyond what is feasible using classical techniques.