Projects per year
Abstract
Large-scale integrated quantum photonic technologies(1,2) will require on-chip integration of identical photon sources with reconfigurable waveguide circuits. Relatively complex quantum circuits have been demonstrated already(1-7), but few studies acknowledge the pressing need to integrate photon sources and waveguide circuits together on-chip(8,9). A key step towards such large-scale quantum technologies is the integration of just two individual photon sources within a wave-guide circuit, and the demonstration of high-visibility quantum interference between them. Here, we report a silicon-on-insulator device that combines two four-wave mixing sources in an interferometer with a reconfigurable phase shifter. We configured the device to create and manipulate two-colour (non-degenerate) or same-colour (degenerate) path-entangled or path-unentangled photon pairs. We observed up to 100.0 +/- 0.4% visibility quantum interference on-chip, and up to 95 +/- 4% off-chip. Our device removes the need for external photon sources, provides a path to increasing the complexity of quantum photonic circuits and is a first step towards fully integrated quantum technologies.
Original language | English |
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Pages (from-to) | 104-108 |
Number of pages | 5 |
Journal | Nature Photonics |
Volume | 8 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Feb 2014 |
Structured keywords
- QETLabs
Keywords
- WAVE-GUIDE
- CORRELATED PHOTONS
- GENERATION
- ENTANGLEMENT
- COMPACT
Fingerprint
Dive into the research topics of 'On-chip quantum interference between silicon photon-pair sources'. Together they form a unique fingerprint.Projects
- 4 Finished
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Integrated Orbital Angular Momentum Integrated Quantum Photonics.
Thompson, M. G.
1/10/12 → 1/04/14
Project: Research
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Profiles
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Dr Joshua W Silverstone
- Department of Electrical & Electronic Engineering - Research Fellow
- QET Labs
- The Bristol Centre for Nanoscience and Quantum Information
Person: Academic , Member