Lukas Knips (Max Planck Institute for Quantum Optics, Munich, Germany)
When and where
From: 11/06/2016 To: 11/04/2016
Description
Speaker: Lukas Knips (Max Planck Institute for Quantum Optics, Munich, Germany)
Date: 18 Nov, Wednesday
Time: 12:00
Place: Seminar Room, Dept. of Theoretical Physics, Corridor 4.-2.
Title: Statistical Effects on Eigenvalues in Quantum State Tomography
Abstract: The statistical nature of projective measurements suffices to explain the occurrence of unphysical estimates in quantum state tomography. In this talk, I am going to show that multinomial or Poissonian noise results in eigenvalue distributions converging to the Wigner semicircle distribution for already a modest number of qubits. This enables to specify the number of measurements necessary to avoid unphysical solutions as well as a new approach to convert unphysical estimates into physical ones.
Contact: Geza Toth