Continuous and deterministic all-photonic cluster state of indistinguishable photons

Zu En Su, Boaz Taitler, Ido Schwartz, Dan Cogan, Ismail Nassar, Oded Kenneth, Netanel H. Lindner, David Gershoni

Research output: Contribution to journalArticlepeer-review

Abstract

Cluster states are key resources for measurement-based quantum information processing. Photonic cluster and graph states, in particular, play indispensable roles in quantum network and quantum metrology. We demonstrate a semiconductor quantum dot based device in which the confined hole spin acts as a needle in a quantum knitting machine producing continuously and deterministically at sub-Gigahertz repetition rate single indistinguishable photons which are all polarization entangled to each other and to the spin in a one dimensional cluster state. By projecting two nonadjacent photons onto circular polarization bases we disentangle the spin from the photons emitted in between. This way we demonstrate a novel way for producing deterministic and continuous all-photonic cluster states. We use polarization tomography on four sequentially detected photons to demonstrate and to directly quantify the robustness of the cluster’s entanglement and the determinism in its photon generation.

Original languageEnglish
Article number077601
JournalReports on Progress in Physics
Volume87
Issue number7
DOIs
StatePublished - Jul 2024

Keywords

  • cluster states
  • continuous generation
  • deterministic generation
  • indistinguishable photons

ASJC Scopus subject areas

  • General Physics and Astronomy

Fingerprint

Dive into the research topics of 'Continuous and deterministic all-photonic cluster state of indistinguishable photons'. Together they form a unique fingerprint.

Cite this