Unknown

Dataset Information

0

High-fidelity entanglement swapping and generation of three-qubit GHZ state using asynchronous telecom photon pair sources.


ABSTRACT: We experimentally demonstrate a high-fidelity entanglement swapping and a generation of the Greenberger-Horne-Zeilinger (GHZ) state using polarization-entangled photon pairs at telecommunication wavelength produced by spontaneous parametric down conversion with continuous-wave pump light. While spatially separated sources asynchronously emit photon pairs, the time-resolved photon detection guarantees the temporal indistinguishability of photons without active timing synchronizations of pump lasers and/or adjustment of optical paths. In the experiment, photons are sufficiently narrowed by fiber-based Bragg gratings with the central wavelengths of 1541?nm & 1580?nm, and detected by superconducting nanowire single-photon detectors with low timing jitters. The observed fidelities of the final states for entanglement swapping and the generated three-qubit state were 0.84?±?0.04 and 0.70?±?0.05, respectively.

SUBMITTER: Tsujimoto Y 

PROVIDER: S-EPMC5780511 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC4918336 | biostudies-literature
| S-EPMC6605094 | biostudies-literature
| S-EPMC5962555 | biostudies-literature
| S-EPMC4366812 | biostudies-other
| S-EPMC5962590 | biostudies-literature
| S-EPMC4614260 | biostudies-other
| S-EPMC8688442 | biostudies-literature
| S-EPMC4563568 | biostudies-literature
| S-EPMC7735306 | biostudies-literature
| S-EPMC7081313 | biostudies-literature