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SUMMARY:Ancilla-driven quantum computation and Landauer's erasure principl
 e - Janet Anders (UCL)
DTSTART:20110217T141500Z
DTEND:20110217T151500Z
UID:TALK28529@talks.cam.ac.uk
CONTACT:Ashley Montanaro
DESCRIPTION:I will talk about two recent projects:\n\n1) An experiment-fri
 endly method of implementing quantum computation\, called Ancilla-Driven Q
 uantum Computation (ADQC)\, where the computation on a static register of 
 qubits is driven remotely with the help of a single\, flying ancilla qubit
  that “steers” the evolution of the register.\n\nRefs: Janet Anders\, 
 Daniel K. L. Oi\, Elham Kashefi\, Dan E. Browne\, Erika Andersson\, Phys. 
 Rev. A 82\, 020301(R) (2010)\; a technical discussion can be found at arXi
 v:0905.3354v2\n\n2) I will then review Landauer's erasure principle. In th
 e last decade a number of papers and books have claimed violation of Landa
 uer’s principle (and the 2nd law of thermodynamics) in the strongly coup
 led quantum regime. I will argue why these claims are erroneous and show h
 ow a consistent treatment resolves the paradox.\n\nRef: Stefanie Hilt\, Sa
 roosh Shabbir\, Janet Anders\, Eric Lutz\, arXiv:1004.1599
LOCATION:MR13\, Centre for Mathematical Sciences
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