| EPSRC Reference: |
GR/S96418/01 |
| Title: |
Absorption spectroscopy on single quantum dots |
| Principal Investigator: |
Warburton, Professor R |
| Other Investigators: |
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| Department: |
Sch of Engineering and Physical Science |
| Organisation: |
Heriot-Watt University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
19 August 2004 |
Ends: |
18 August 2007 |
Value (£): |
251,881
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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Self-assembled quantum dots are semiconductor nanostructures which in some ways behave as artificial atoms even though they are embedded in a solid matrix. They have ideal optical properties. At low temperature, a single quantum dot emits a spectrally pure single line, a property which can potentially be exploited for novel devices operating on single quantum dots. Examples include a single photon source and the element in a quantum computer. Absorption spectroscopy is the method of choice to investigate individual quantum dots as it provides a large amount of information with the absolute minimum perturbation. Notably, the dephasing rate of excitons, a crucial issue for all future single dot devices, can be determined by measuring the linewidth of the resonance. However, absorption on a single quantum dot is a difficult experiment to.carry out. Nevertheless, these experiments are now possible following developments in the Nano-optics Laboratory at Heriot-Watt University. The present proposal aims to exploit this development in order to understand the dephasing properties, to investigate the regime where the quantum dot interacts with a resonant laser field, and to magnify the signal so that the quantum dot interacts with flying qubits, the photons.
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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.hw.ac.uk |