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The Quantum Information Theory Group QUIT in Pavia (www.qubit.it) is searching for highly motivated postdoctoral scientists to join the young and dynamic research team led by Giacomo M. D'Ariano at the "A. Volta" Physics Department of the University of Pavia (www.unipv.it)

Postdoctoral Research Associate (Fixed term until 31 August 2012)
Mathematical Quantum Control
Institute of Mathematics and Physics
Grade 7: £30,594 - £35,469
Applications are invited for a postdoctoral research associate position at Aberystwyth University. The successful candidate will work on an EPSRC funded project on theoretic methods applied to quantum control, and will work with the Quantum Open Systems and Control research group at Aberystwyth.

ArXiv identifier: 

0905.2942

Speakers: 

Cesar A. Rodriguez-Rosario

Authors: 

Cesar A. Rodriguez-Rosario, James D. Whitfield, Alan Aspuru-Guzik

We introduce the quantum stochastic walk (QSW), which determines the evolution of generalized quantum mechanical walk on a graph that obeys a quantum stochastic equation of motion. Using an axiomatic approach, we specify the rules for all possible quantum, classical and quantum-stochastic transitions of a vertex as defined from its connectivity. We show how the family of possible QSW encompasses both the classical random walk (CRW) and the quantum walks (QW) as special cases, but also includes more general probability distributions.

A Research Fellow is to be appointed at Birmingham, to start by October 2009, on my EPSRC project to apply techniques of geometric logic to the topos approaches to quantum theory (Isham and Doering at Imperial, Landsman's group at Nijmegen).

The job is now posted online at Birmingham, application deadline 10th June 2009; go to http://www.hr.bham.ac.uk/jobs/ and search by post number 43408. There will be an advertisement on http://www.jobs.ac.uk/ shortly.

You can also find all that information on my website at

http://www.cs.bham.ac.uk/~sjv/geophysics.php

ArXiv identifier: 

0905.0901

Speakers: 

Steve Flammia

Authors: 

Dave Bacon and Steven T. Flammia

The difficulty in producing precisely timed and controlled quantum gates is a significant source of error in many physical implementations of quantum computers. Here we introduce a simple universal primitive, adiabatic gate teleportation, which is robust to timing errors and many control errors and maintains a constant energy gap throughout the computation above a degenerate ground state space. Notably this construction allows for geometric robustness based upon the control of two independent qubit interactions.

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