Entangling a Hole Spin with a Time-Bin Photon: A Waveguide Approach for Quantum Dot Sources of Multiphoton Entanglement

被引：34

作者：

Appel, Martin Hayhurst ^{[1
]}

Tiranov, Alexey ^{[1
]}

Pabst, Simon ^{[1
]}

Chan, Ming Lai ^{[1
]}

Starup, Christian ^{[1
]}

Wang, Ying ^{[1
]}

Midolo, Leonardo ^{[1
]}

Tiurev, Konstantin ^{[1
]}

Scholz, Sven ^{[2
]}

Wieck, Andreas D. ^{[2
]}

Ludwig, Arne ^{[2
]}

Sorensen, Anders Sondberg ^{[1
]}

Lodahl, Peter ^{[1
]}

机构：

[1] Univ Copenhagen, Niels Bohr Inst, Ctr Hybrid Quantum Networks Hy Q, DK-2100 Copenhagen O, Denmark

[2] Ruhr Univ Bochum, Lehrstuhl Angew Festkorperphys, Univ str 150, D-44801 Bochum, Germany

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.128.233602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Deterministic sources of multiphoton entanglement are highly attractive for quantum information processing but are challenging to realize experimentally. In this Letter, we demonstrate a route toward a scaleable source of time-bin encoded Greenberger-Horne-Zeilinger and linear cluster states from a solid-state quantum dot embedded in a nanophotonic crystal waveguide. By utilizing a self-stabilizing double-pass interferometer, we measure a spin-photon Bell state with (67.8 +/- 0.4)% fidelity and devise steps for significant further improvements. By employing strict resonant excitation, we demonstrate a photon indistinguishability of (95.7 +/- 0.8)%, which is conducive to fusion of multiple cluster states for scaling up the technology and producing more general graph states.

引用

页数：7

共 51 条

[1]

Appel M. H., 2021, THESIS U COPENHAGEN

[2] Coherent Spin-Photon Interface with Waveguide Induced Cycling Transitions [J].