首页|Heralded entanglement between error-protected logical qubits for fault-tolerant distributed quantum computing

Heralded entanglement between error-protected logical qubits for fault-tolerant distributed quantum computing

扫码查看
原文链接
  • 万方数据
  • 维普
Quantum error correction is essential for achieving reliable quantum information processing tasks,as it can mitigate the detri-mental effects of noise by encoding single-qubit information into a larger quantum system.However,the generation of distributed entanglement between logical qubits located within two spatially separated nodes presents a significant resource-intensive chal-lenge that has yet to be overcome.Here we present a heralded protocol for generating distributed entanglement between two nonlocal error-protected logical qubits.A high-dimensional single photon can evolve physical qubits into a logical qubit that entangles with the photon and then converts logical qubit-photon entanglement into entanglement between two logical qubits,when the photon state is properly tuned and an effective photon-spin interface between single photons and individual spins is exploited.Furthermore,the success of the entanglement generation is heralded by the detection of the photon,and the corre-sponding efficiency can,in principle,approach unity.These distinguished features make our protocol highly appealing for future large-scale quantum technologies.

quantum networksdistributed entanglementerror-protected logical qubitshigh-dimensional photons

Jialun Li、Zhihao Xie、Yachen Li、Yansen Liang、Zhenhua Li、Tao Li

展开 >

MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing,School of Physics,Nanjing University of Science and Technology,Nanjing 210094,China

National Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central Universities

119041716222100430922010807

2024

10.1007/s11433-023-2245-9

中国科学:物理学 力学 天文学(英文版)
中国科学院

中国科学:物理学 力学 天文学(英文版)

CSTPCD
影响因子：0.91
ISSN：1674-7348
年,卷(期)：2024.67(2)
  • 83