Jonas Kahn, Workshop on: QUANTUM INFORMATION PROCESSING FOR QUANTUM COMMUNICATIONS

Workshop on QUANTUM MEASUREMENTS AND OPERATIONS FOR CRIPTOGRAPHY AND INFORMATION PROCESSING
Quantum Measurements and Operations for Criptography and Information Processing Penalization Methods in Quantum Tomography
aula DOTTORATO - GIOVedì 3 MARZO ore 11.00
	JONAS KAHN, Université Paris-Sud 11
>PRESENTATION: Jonas Kahn entered the École Normale Supérieure in 2001, and followed there both the mathematics and the physics cursus. He graduated in Probability and Statistics at Orsay (Paris-Sud) with a master's thesis under the direction of Pascal MASSART and the close scrutiny of Richard GILL, on “Quantum Tomography”. He has begun a PhD thesis along those lines.
Abstract
	Quantum tomography of the harmonic oscillator is an infinite-dimensional statistical problem. Use of methods such as projection estimators (pattern functions) therefore require that you restrict your attention to a finite-dimensional submodel. Penalization is a way to select a good submodel. By looking at the energy of the state, you may then get approximation speeds, that you can extend to quantum calibration of measuring apparatuses.