QuEnG Seminar, Computer Science - Communication through coherently controlled quantum channels

on the January 30, 2020

At 2:00pm
As part of the QuEnG Seminar - Computer Science, we are pleased to welcome Alastair Abbot, from the university of Geneva who is interested in the coherent control of quantum systems.
Abstract
The coherent control of quantum systems plays a key role in quantum computation and communication, but discussion is usually limited to the coherent control of unitaries. I will consider instead the coherent control of quantum channels, and in particular two interesting possibilities: the coherent control of the order in which channels are used, and coherently controlled switching between different channels. I will focus in particular how these types of control can activate the capacity of quantum channels in new ways, where recent results have shown that, counterintuitively, it can allow information to be transmitted through completely depolarising channels. The operational meaning and relevance of these results will also be discussed.

Based on joint work with J. Wechs, D. Horsman, M. Mhalla and C. Branciard; arXiv:1810.09826

ACCESS:
Richard EAST will be waiting at the entrance to let people up, any late comers should contact him at rdp.east@gmail.com which he will be monitoring.


Published on January 20, 2020

Practical informations

Location


Laboratoire d'informatique de Grenoble (LIG)
Bâtiment IMAG, 4th Floor - Room 482
700 Avenue Centrale, 38401 Saint-Martin-d'Hères