| EPSRC Reference: |
EP/M508275/1 |
| Title: |
Fibre Wavelength Quantum Light Sources |
| Principal Investigator: |
Heffernan, Professor J |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Electronic and Electrical Engineering |
| Organisation: |
University of Sheffield |
| Scheme: |
Technology Programme |
| Starts: |
01 July 2015 |
Ends: |
31 December 2016 |
Value (£): |
100,479
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| Related Grants: |
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Summary on Grant Application Form |
The Sheffield team and the National Centre for III-V technologies will develop quantum dot single photon emitters for
Quantum Communications. The overall project aims are to demonstrate the controlled emission of entangled photons from
an LED structure emitting at a fibre-compatible wavelengths. Devices operating at this wavelength will be required to
achieve commercially significant Quantum Communications technologies. There is a significant epitaxy challenge in
developing this technology by Metal Organic Vapour Phase Epitaxy (MOVPE) at these wavelengths and there have been
no demonstrations of entangled LEDs to date.
The Sheffield team will develop Indium Arsenide on Indium Phosphide quantum dots by MOVPE , complementing and
contrasting with the development by the Molecular Beam Epitaxy (MBE) method in the Cavendish laboratory. To
demonstrate single photon emitters at these wavelengths is challenging and there is a need to investigate the properties of
the quantum dots by both techniques to understand how the quantum dots form and what controls the fundamental
properties that will generate photon entanglement; including aspects such as the exciton spin splitting value. The work will
build significantly on the prior work carried out at shorter wavelengths in Sheffield, Toshiba and Cavendish laboratories
using a different material system. In particular at Sheffield the result of quantum dot structures developed under an EPSRC
Programme Grant will benefit the project strongly since many of the physical properties may be similar. The demonstration
of high quality devices at this wavelength will be a significant milestone in matching Quantum Communications to the
current non-quantum fibre-communications infrastructure.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.shef.ac.uk |