| EPSRC Reference: |
GR/S19387/01 |
| Title: |
Decoherence in Quantum Information Processing |
| Principal Investigator: |
Knight, Professor Sir P |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Physics |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 May 2003 |
Ends: |
31 October 2006 |
Value (£): |
208,058
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| EPSRC Research Topic Classifications: |
| Quantum Optics & Information |
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Summary on Grant Application Form |
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Quantum information is a rapidly expanding field with strong potential applications in m etrology and precision measurements. Usage of quantummechanically correlated (entangled) states provides the key tool for these kind of processes. These states, however, are very fragile and suffer from decoherence. The proposed research involves investigation of decoherence properties of entangled quantum states in noisy environments that may contair dielectric bodies such as optical fibres or metallic surfaces. We will concentrate on two types of quantum systems. On one hand, we will investigate the miniaturization limits for coherent manipulation of cold atoms trapped or guided above metallic surfaces imposed by electromagnetic fluctuations due to absorption in the dielectric body. The second kind of states are photonic quantum states that may come in contact with dielectric bodies such as mirrors, cavities, beam splitters, and optical fibres. We will look closer into the generation of single-photon Fock states and quantum operations by means of passive linear optical devices combined with measurements. Practical implementations in cavity networks and usage of decoherence-free subspaces will be looked at.Decoherence, entanglement, single-photon sources
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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.imperial.ac.uk |