The MQC is starting a seminar series. They will take place at 11 am on alternating Thursdays, starting Thursday, Sept. 28.
The first speaker will be Jeffrey Schenker from MSU:
Theory of Ergodic Quantum Processes
Thursday September 28, 2023
11:00am - 12:00pm ET
CMSE Seminar Room (1502 EB)
https://msu.zoom.us/j/96182822251
Passcode: 582029
Abstract
Recent results on the evolution of open quantum systems will be discussed.
An open quantum system has non-trivial interactions with its environment,
or with a measurement apparatus. In this talk, we will first review the
background of open quantum systems and their description and then
introduce the notion of a quantum process, as a sequence of quantum
channels (trace preserving, completely positive maps on the space of density
matrices). We will present results about the long-time behavior of ergodic
quantum processes, composed of random channels sampled along the
trajectory of an ergodic map, and present applications of these results to the
theory of noisy repeated measurement processes. (Joint work with Ramis
Movassagh, Lubashan Pathirana, Renaud Raquépas, Owen Ekblad, and
Eloy Nadales.)