This week we have a special quantum information seminar given by Renato Renner. He will be
speaking Wednesday April 2 at 4:30 (note time change from standard seminar!) in room
6C-442. Title and and abstract are below. Hope to see you there.
Title: Reliable Quantum State Tomography
Abstract: Quantum state tomography is the task of estimating the state of a quantum system
using measurements. Typically, one is interested in the (unknown) state generated during
an experiment which can be repeated arbitrarily often in principle. However, the number of
actual runs of the experiment, from which data is collected, is always finite (and often
small). As pointed out recently, this may lead to unjustified (or even wrong) claims when
employing standard statistical tools without care. In this talk, I will present a method
for obtaining reliable estimates from finite tomographic data. Specifically, the method
allows the derivation of confidence regions, i.e., subsets of the state space in which the
unknown state is contained with probability almost one.
This is joint work with Matthias Christandl, see also arXiv:1108.5329.
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Edward Farhi
Cecil and Ida Green Professor of Physics
Director
Center for Theoretical Physics
Massachusetts Institute of Technology
6-300
Cambridge MA 02139
617 253 4871
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