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SUMMARY:Ancilla-Driven Quantum Computation and Twisted Graph States - Dani
 el Oi (Strathclyde)
DTSTART:20090122T141500Z
DTEND:20090122T151500Z
UID:TALK16548@talks.cam.ac.uk
CONTACT:Lawrence Ioannou
DESCRIPTION:We introduce a new paradigm for quantum computing called Ancil
 la-Driven Quantum Computation (ADQC) which combines aspects both of the qu
 antum circuit and the one-way model to overcome challenging issues in buil
 ding large-scale quantum computers. Instead of directly manipulating each 
 qubit to perform universal quantum logic gates or measurements\, ADQC uses
  a fixed two-qubit interaction to couple the memory register of a QC to an
  ancilla qubit. By measuring the ancilla\, the measurement-induced back-ac
 tion on the system performs the desired logical operations.\n\nThe underly
 ing mathematical model is based on a new entanglement resource called a tw
 isted graph state generated from a non-commuting operator\, leading to a s
 urprisingly powerful structure for parallel computation compared to graph 
 states obtained from a commuting generator.\n\nADQC may allow significant 
 architectural\, construction and control advantages compared to the circui
 t model and exploits naturally occuring interactions in a range of physica
 l systems.
LOCATION:MR11\, Centre for Mathematical Sciences
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