EPSRC Reference: |
GR/M15743/01 |
Title: |
GIANT KERR NON-LINEARITIES AND SINGLE PHOTON CAVITY CONTROL IN LASER COOLED RUBIDIUM |
Principal Investigator: |
Marangos, Professor J |
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 October 1998 |
Ends: |
30 September 2001 |
Value (£): |
30,660
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EPSRC Research Topic Classifications: |
Atoms & Ions |
Optical Phenomena |
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EPSRC Industrial Sector Classifications: |
No relevance to Underpinning Sectors |
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Related Grants: |
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Panel History: |
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Summary on Grant Application Form |
This proposal is for an experimental and theoretical investigation of atomic coherence effects produced when two or more laser beams irradiate an atom, and to demonstrate how these effects can be used to enable a single photon to control the transmission of an optical cavity. The proposal exploits and combines two physical processes; i. The loss-free transmission and exceptionally large dispersion of a resonant probe beam in the presence of another coherent 'coupling' beam (electromagnetically induced transparency) , and ii. The control of a phase of a probe laser by the intensity of a 'signal' beam, i.e. the Kerr effect. The experimental work will be carried out in a rubidium magneto-optical trap thereby taking advantage of the Doppler-free properties of laser cooled atoms. The very large signal-induced phase shifts (i.e. giant Kerr non-linearities) will be of interest in experimental tests of quantum measurement theory where it is useful to be able to deduce the intensity of a 'signal' beam by making direct measurements of the phase of a 'meter' beam, i.e. quantum nondemolition measurements. Single photon cavity control could have applications to the development of optical logic gates for quantum computing and cryptology.
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
Description |
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Summary |
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Date Materialised |
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Sectors submitted by the Researcher |
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Project URL: |
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Further Information: |
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Organisation Website: |
http://www.imperial.ac.uk |