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SUMMARY:Continuous-variables graph state generation and reconstruction - A
 lessandro Ferraro (University of Sussex)
DTSTART:20130117T141500Z
DTEND:20130117T151500Z
UID:TALK42844@talks.cam.ac.uk
CONTACT:Paul Skrzypczyk
DESCRIPTION:Gaussian graph states represent the basic resource for\nmeasur
 ement-based quantum computation with continuous variables. I\nwill present
  two approaches for obtaining them. The first [1] involves\na family of Ha
 miltonians whose ground states are Gaussian graph\nstates\, thus opening t
 he way for their adiabatic preparation in\nphysical settings beyond the st
 andard optical ones. Regarding the\nsecond approach [2] I will present a g
 eneral scheme\, applying both to\ndiscrete- and continuous-variable system
 s\, for sequential one-way\nquantum computation\, where both the generatio
 n of the graph state and\nits consumption by measurements are carried out 
 simultaneously.\nFinally\, I will introduce a minimal scheme to reconstruc
 t those states\n(and any arbitrary state) in the case of quantum networks 
 composed of\ninteracting continuous variables [3].\n\n[1] Leandro Aolita\,
  Augusto J. Roncaglia\, Alessandro Ferraro\, and\nAntonio Acín\, Phys. Re
 v. Lett. 106\, 090501 (2011).\n[2] Augusto J. Roncaglia\, Leandro Aolita\,
  Alessandro Ferraro\, and\nAntonio Acín\, Phys. Rev. A 83\, 062332 (2011)
 .\n[3] Tommaso Tufarelli\, Alessandro Ferraro\, M. S. Kim\, and Sougato\nB
 ose\, Phys. Rev. A 85\, 032334 (2012).
LOCATION:MR4\, Centre for Mathematical Sciences
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