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.
Thursday, February 28, 2008
12:30 PM to 2 PM
Speaker: Juan Pablo Paz,
University of Buenos Aires
Technical Host: Wojciech Zurek and Diego Dalvit
TOPIC: Dynamics of the Entanglement Between Two Oscillators in the Same Environment
We provide a complete characterization of the evolution of entanglement between two oscillators coupled to a common environment. For initial Gaussian states, we identify three phases with different qualitative long time behavior. There is a phase where entanglement undergoes a sudden death (SD). Another phase (SDR) is characterized by an infinite sequence of events of sudden death and revival of entanglement. In the third phase (NSD), there is no sudden death of entanglement, which persists for a long time. The phase diagram is described, and analytic expressions for the boundary between phases are obtained. These results are applicable to a large variety of non-Markovian environments.