Experimental Generation of Spin-Photon Entanglement in Silicon Carbide
- URL: http://arxiv.org/abs/2311.17455v1
- Date: Wed, 29 Nov 2023 08:52:18 GMT
- Title: Experimental Generation of Spin-Photon Entanglement in Silicon Carbide
- Authors: Ren-Zhou Fang, Xiao-Yi Lai, Tao Li, Ren-Zhu Su, Bo-Wei Lu, Chao-Wei
Yang, Run-Ze Liu, Yu-Kun Qiao, Cheng Li, Zhi-Gang He, Jia Huang, Hao Li,
Li-Xing You, Yong-Heng Huo, Xiao-Hui Bao, Jian-Wei Pan
- Abstract summary: We experimentally generate entanglement between a silicon vacancy defect in silicon carbide and a scattered single photon in the zero-phonon line.
Photonic qubit is encoded in the time-bin degree-of-freedom and measured using an unbalanced Mach-Zehnder interferometer.
- Score: 9.89461825381694
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: A solid-state approach for quantum networks is advantages, as it allows the
integration of nanophotonics to enhance the photon emission and the utilization
of weakly coupled nuclear spins for long-lived storage. Silicon carbide,
specifically point defects within it, shows great promise in this regard due to
the easy of availability and well-established nanofabrication techniques.
Despite of remarkable progresses made, achieving spin-photon entanglement
remains a crucial aspect to be realized. In this paper, we experimentally
generate entanglement between a silicon vacancy defect in silicon carbide and a
scattered single photon in the zero-phonon line. The spin state is measured by
detecting photons scattered in the phonon sideband. The photonic qubit is
encoded in the time-bin degree-of-freedom and measured using an unbalanced
Mach-Zehnder interferometer. Photonic correlations not only reveal the quality
of the entanglement but also verify the deterministic nature of the
entanglement creation process. By harnessing two pairs of such spin-photon
entanglement, it becomes straightforward to entangle remote quantum nodes at
long distance.
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