[quantum-info] Today's PIQuDos
Markus Mueller
markus14m at gmail.com
Wed Mar 21 10:06:51 EDT 2012
A reminder of Victor Veitch's talk at 4pm in the Time room at PI.
Title: *Negative Quasi-Probability Representation is a Necessary
Resource for Quantum Computation*
Speaker: Victor Veitch (IQC)
Abstract:
The magic state model of quantum computation gives a recipe for
universal quantum computation using perfect Clifford operations and
repeat preparations of a noisy ancilla state. It is an open problem to
determine which ancilla states enable universal quantum computation in
this model. Here we show that for systems of odd dimension a necessary
condition for a state to enable universal quantum computation is that it
have negative representation in a particular quasi-probability
representation which is a discrete analogue to the Wigner function. This
condition implies the existence of a large class of bound states for
magic state distillation: states which cannot be prepared using Clifford
operations but do not enable universal quantum computation.
Date: March 21, 2012 - 4:00 pm
Series: Perimeter Institute Quantum Discussions
Location: Time Rm
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