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High-efficiency multiphoton boson sampling
- Source :
- Nature Photonics; June 2017, Vol. 11 Issue: 6 p361-365, 5p
- Publication Year :
- 2017
-
Abstract
- Boson sampling is considered as a strong candidate to demonstrate ‘quantum computational supremacy’ over classical computers. However, previous proof-of-principle experiments suffered from small photon number and low sampling rates owing to the inefficiencies of the single-photon sources and multiport optical interferometers. Here, we develop two central components for high-performance boson sampling: robust multiphoton interferometers with 99% transmission rate and actively demultiplexed single-photon sources based on a quantum dot–micropillar with simultaneously high efficiency, purity and indistinguishability. We implement and validate three-, four- and five-photon boson sampling, and achieve sampling rates of 4.96 kHz, 151 Hz and 4 Hz, respectively, which are over 24,000 times faster than previous experiments. Our architecture can be scaled up for a larger number of photons and with higher sampling rates to compete with classical computers, and might provide experimental evidence against the extended Church–Turing thesis.
Details
- Language :
- English
- ISSN :
- 17494885 and 17494893
- Volume :
- 11
- Issue :
- 6
- Database :
- Supplemental Index
- Journal :
- Nature Photonics
- Publication Type :
- Periodical
- Accession number :
- ejs42143474
- Full Text :
- https://doi.org/10.1038/nphoton.2017.63