.png){kind=icon}
返回
Preserving entanglement in a solid-spin system using quantum autoencoders
.png){kind=icon}
OA
AI
DOI：10.1063/5.0120060.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Entanglement, as a key resource for modern quantum technologies, is extremely fragile due to the decoherence. Here, we show that a quantum autoencoder, which is trained to compress a particular set of quantum entangled states into a subspace that is robust to decoherence, can be employed to preserve entanglement. The training process is based on a hybrid quantum-classical approach to improve the efficiency in building the autoencoder and reduce the experimental errors during the optimization. Using nitrogen-vacancy centers in diamond, we demonstrate that the entangled states between the electron and nuclear spins can be encoded into the nucleus subspace, which has much longer coherence time. As a result, lifetime of the Bell states in this solid-spin system is extended from 2.22 +/- 0.43 mu s to 3.03 +/- 0.56 ms, yielding a three orders of magnitude improvement. The quantum autoencoder approach is universal, paving the way of utilizing long lifetime nuclear spins as immediate-access quantum memories in quantum information tasks. Published under an exclusive license by AIP Publishing.
Keyword:
SINGLE SPINS
期刊
IF:
3.6
论文数:
10.4W
被引数:
17.8W
机构
引用论文
Coherence of single spins coupled to a nuclear spin bath of varying density.png)
PHYSICAL REVIEW B
OAAI
PHYSICAL REVIEW BIF3.7
OAAI分享收藏
查看更多内容