“Open” Quantum Systems
Theoretical Physics - From Outer Space to Plasma · Oxford University
July 6, 201847m 29s
Audio is streamed directly from the publisher (media.podcasts.ox.ac.uk) as published in their RSS feed. Play Podcasts does not host this file. Rights-holders can request removal through the copyright & takedown page.
Show Notes
This talk reviews how to deal with quantum systems that are coupled to the outside world, as in reality all systems are. We first introduce density operators and explain how quantum states give rise to them. We then turn to measures of entanglement that can be computed from a density operator, and show that entanglement grows with time. Finally, we show how the interaction with the environment gives rise to the phenomenon of decoherence.