BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Stochastic Resonance effects in composite systems - Dr. Susana Hue
 lga - University of Hertfordshire
DTSTART:20080528T150000Z
DTEND:20080528T161500Z
UID:TALK12371@talks.cam.ac.uk
CONTACT:Berry Groisman
DESCRIPTION:I will discuss the phenomenon of stochastic resonance (SR)\, a
  paradigm of the counter intuitive effects noise may have\, in driven coup
 led quantum systems. I will construct dynamical and information theoretic 
 measures of the system's response that exhibit a non-monotonic behaviour a
 s a function of the noise strength and analyze the relation between lack o
 f monotonicity in the response and the presence of quantum correlations an
 d identify parameter regimes where the breakdown of a linear response can 
 be linked to the presence of entanglement. I will also show that a chain o
 f coupled spin systems can exhibit an array-enhanced response\, where the 
 sensitivity of a single resonator is enhanced as a result of nearest-neigh
 bour coupling. These results enlarge the domain where SR effects exist and
  should be observable in a variety of qubit realizations\, such as arrays 
 of superconducting qubits. 
LOCATION:Centre for Mathematical Sciences\, Wilberforce Road\, Lecture roo
 m MR14 (Pavilion F)
END:VEVENT
END:VCALENDAR