Quantum Lunch Location:
T-Division Conference Room, TA-3,
Building 123, Room 121
Quantum Institute: Visitor Schedule
The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.
For more information, contact Diego Dalvit.
February 22, 2007
Robert B. Griffiths
Decoherence and Information
The conventional approach to decoherence of a quantum system
interacting with its environment focuses on off-diagonal matrix elements of its
reduced density operator in a particular (pointer) basis. While it has
provided many valuable insights, this analysis suffers from certain
limitations, and lacks a firm basis in fundamental quantum theory.
Information-theoretic ideas formulated using a consistent approach to
probabilities for quantum systems, in particular the notion of various
incompatible types of quantum information, look promising for overcoming some
of these limitations, and providing new insights into the time development of
open quantum systems.