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Details of Grant 

EPSRC Reference: GR/R54224/01
Title: Semiconductor Quantum Nanoelectronics: Physics and Applications
Principal Investigator: Pepper, Professor Sir M
Other Investigators:
Linfield, Professor EH Davies, Professor AG Jones, Dr G
Ford, Professor CJB Thomas, Dr K Ritchie, Professor DA
Smith, Professor CG Barnes, Professor C Jones, Professor G
Jones, Dr G
Researcher Co-Investigators:
Dr A Ghosh Dr V Talyanskii
Project Partners:
Department: Physics
Organisation: University of Cambridge
Scheme: Standard Research (Pre-FEC)
Starts: 01 October 2001 Ends: 30 September 2005 Value (£): 3,837,487
EPSRC Research Topic Classifications:
Condensed Matter Physics Materials Characterisation
Quantum Optics & Information
EPSRC Industrial Sector Classifications:
Aerospace, Defence and Marine Electronics
Related Grants:
Panel History:  
Summary on Grant Application Form
The purpose of this application is to allow us to develop extensively the physics and technology of semiconductor quantum nanoelectronics using group 111-V semiconductors. Our motivation is to extract new phenomena in a number of nanoelectronic and low dimensional systems and assess their applicability to the new emerging quantum technologies. The proposal is based on our present and past work which has established the ability to manipulate and measure electron wavefunctions and their consequences to a very high degree. In particular, we propose to investigate effects based on single and small numbers of electrons in simulations where their mutual interaction and quantum entanglement determine their transport properties. One-and-zero-dimensional structures (quantum dots) will be investigated in detail including arrays of such devices (dot molecules and wire arrays). Collective and decohering effects will be significant here as in mesoscopic 2D systems. Here the increasing flexibility of the technology has allowed a significant reduction of disorder such that aspects of conduction in the dilute limit are now emerging.The use of shot noise and quantum statistical techniques will allow the microscopic investigation of strongly interacting systems and fluctuations in single and few electron transport. The quantised acousto-electric effect will be developed to produce a single electron standard giving the charge on the electron to high accuracy, and will be extended to single-photon generation and qubit operation when single and paired electrons are transported .A number of novel technologies for fabricating nanostructures will be of importance and the results of these investigations will be assessed for their applicability to quantum computational and communications.
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Organisation Website: http://www.cam.ac.uk