Room-temperature storage of quantum entanglement using decoherence-free subspacein a solid-state spin system

被引：14

作者：

Wang, F. ^{[1
]}

Huang, Y. -Y. ^{[1
]}

Zhang, Z. -Y. ^{[1
,2
]}

Zu, C. ^{[1
]}

Hou, P. -Y. ^{[1
]}

Yuan, X. -X. ^{[1
]}

Wang, W. -B. ^{[1
]}

Zhang, W. -G. ^{[1
]}

He, L. ^{[1
]}

Chang, X. -Y. ^{[1
]}

Duan, L. -M. ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Ctr Quantum Informat, IIIS, Beijing 100084, Peoples R China

[2] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

来源：

PHYSICAL REVIEW B | 2017年 / 96卷 / 13期

关键词：

ERROR-CORRECTING CODES; REDUCING DECOHERENCE; COHERENCE; COMPUTATION; MEMORY; QUBIT;

D O I：

10.1103/PhysRevB.96.134314

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We experimentally demonstrate room-temperature storage of quantum entanglement using two nuclear spins weakly coupled to the electronic spin carried by a single nitrogen-vacancy center in diamond. We realize universal quantum gate control over the three-qubit spin system and produce entangled states in the decoherence-free subspace of the two nuclear spins. By injecting arbitrary collective noise, we demonstrate that the decoherence-free entangled state has coherence time longer than that of other entangled states by an order of magnitude in our experiment.

引用

页数：6

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