Multiphoton graph states from a solid-state single-photon source

Jin-Peng Li, Jian Qin, Ang Chen, Zhao-Chen Duan, Ying Yu, YongHeng Huo, Sven Hoefling, Chao-Yang Lu, Kai Chen, Jian-Wei Pan

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
3 Downloads (Pure)

Abstract

Photonic graph states are underlying resources for one-way optical quantum computation, quantum error correction, fundamental testing of quantum mechanics, and quantum communication networks. Most existing works, however, are based on the spontaneous parametric down-conversion sources that intrinsically suffer from probabilistic generation and double pair components. Here, we create two important classes of graph states, a polarization-encoded four-photon Greenberger–Horne–Zeilinger (GHZ) state and a linear cluster state, by actively demultiplexing a deterministic single-photon source from a semiconductor quantum dot embedded in a micropillar. A state fidelity of 0.790 ± 0.009 (0.763 ± 0.004) and a count rate of ∼13 Hz are observed for the four-photon GHZ (cluster) state. The results constitute a new route toward the multiphoton entanglement with deterministic single-photon sources.
Original languageEnglish
Pages (from-to)1603-1610
Number of pages8
JournalACS Photonics
Volume7
Issue number7
Early online date5 Jun 2020
DOIs
Publication statusPublished - 15 Jul 2020

Keywords

  • Multiphoton entanglement graph states
  • Four-photon GHZ state
  • Four-photon linear cluster state
  • One-way quantum computation
  • Solid-state single-photon source
  • Semiconductor quantum dot

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