论文标题
原子频率梳子内存中的一个小时连贯的光学存储
One-hour coherent optical storage in an atomic frequency comb memory
论文作者
论文摘要
光纤中的光子损失可防止地面上量子信息的长距离分布。提出了量子中继器来克服这个问题，但是由于量子中继器方案的系统复杂性，到目前为止，通信距离仍然有限。替代解决方案包括可运输的量子记忆和配备量子记忆的卫星，其中长期寿命的光学量子记忆是实现全局量子通信的关键组成部分。但是，到目前为止，光学记忆的最长存储时间大约是1分钟。在这里，通过采用零一阶 - Zeman磁场和动力脱钩以保护固体中的自旋连贯性，我们在1小时内证明了在原子频率梳中的光库中连贯的光存储，从而导致了基于长期固态固态量子记忆的大规模量子通信的前景。
Photon loss in optical fibers prevents long-distance distribution of quantum information on the ground. Quantum repeater is proposed to overcome this problem, but the communication distance is still limited so far because of the system complexity of the quantum repeater scheme. Alternative solutions include transportable quantum memory and quantum-memory-equipped satellites, where long-lived optical quantum memories are the key components to realize global quantum communication. However, the longest storage time of the optical memories demonstrated so far is approximately 1 minute. Here, by employing a zero-first-order-Zeeman magnetic field and dynamical decoupling to protect the spin coherence in a solid, we demonstrate coherent storage of light in an atomic frequency comb memory over 1 hour, leading to a promising future for large-scale quantum communication based on long-lived solid-state quantum memories.
