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NGCM-0071: Fidelity optimization in an atomic quantum computer

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  • Full or part time
    Dr Tim Freegarde
    Dr I Kuprov
  • Application Deadline
    Applications accepted all year round

Project Description

Quantum computers will use the coherence of individual quantum systems such as atoms for data storage, and tailored pulses of laser light may perform the computational operations. Although atoms are identical, systematic variations in laser intensity and environment mean that there are variations in the fidelity of these operations. Quantum error correction, specifically using ’composite pulse’ techniques, allows the effects of these variations to be significantly reduced.

Composite pulse sequences were invented, and have mostly been developed, for NMR chemistry, and it is to such applications that existing sequences have been tailored. Atomic quantum computation has different aims, constraints and sensitivities, and therefore requires composite pulses of its own. This project will use and extend the computationally efficient toolboxes of Southampton’s Spin Dynamics group to develop composite pulse sequences designed and optimized for the correction of errors in atomic quantum computers, first by addressing the ’beamsplitter’ and ’mirror’ functions of the underlying matterwave interferometry, then by treating the optimization of more complex operations in their entirety.

If you wish to discuss any details of the project informally, please contact Dr Tim Freegarde, School of Physics & Astronomy, [email protected], Tel: +44 (0) 2380 592347.

This project is run through participation in the EPSRC Centre for Doctoral Training in Next Generation Computational Modelling (http://ngcm.soton.ac.uk). For details of our 4 Year PhD programme, please see http://www.findaphd.com/search/PhDDetails.aspx?CAID=331&LID=2652

For a details of available projects click here http://www.ngcm.soton.ac.uk/projects/index.html

Visit our Postgraduate Research Opportunities Afternoon to find out more about Postgraduate Research study within the Faculty of Engineering and the Environment: http://www.southampton.ac.uk/engineering/news/events/2016/02/03-discover-your-future.page

How good is research at University of Southampton in General Engineering?

FTE Category A staff submitted: 192.23

Research output data provided by the Research Excellence Framework (REF)

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