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SUMMARY:Characterizing a Quantum Environment - Matthew Ord\, Cavendish Lab
 oratory\, University of Cambridge
DTSTART:20251125T140000Z
DTEND:20251125T150000Z
UID:TALK241270@talks.cam.ac.uk
CONTACT:Boyao Liu
DESCRIPTION:When simulating diffusion of a classical particle coupled to a
 n environment\, we don't usually care about the exact state of the environ
 ment. Instead\, we use a stochastic force to represent the interactions be
 tween the particle and it's\nsurroundings. This force is characterized by 
 a correlation function that captures the essential statistical properties 
 of the environment.\n\nIn this talk\, we explore how to extend this idea t
 o quantum systems. We introduce the concept of a "field operator" to repre
 sent the influence of a quantum environment on a system. Similar to the cl
 assical stochastic force\, the field operator is characterized by its corr
 elation functions\, which encapsulate the statistical properties of the qu
 antum\nenvironment.\n\nWe discuss how to calculate these correlation funct
 ions and how they can be used to simulate the dynamics of both a quantum a
 nd a classical system coupled to a quantum environment.
LOCATION:Seminar Room - North\, Ray Dolby Centre\, Cavendish Laboratory
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