Superradiant Superconductivity

In Dicke Superradiance, a collection of 2-level atoms
interacting with a single boson mode acquires, through quantum coherence, an
enhanced emission property and a rich dynamics. We suggest possibility of Dicke
superradiance in a BCS superconductor. The necessary 2-level atoms are
identified with  Anderson pseudo spins seeing
a self consistent mean field in k-space. 
A way to couple these 2-level bose atoms to an external boson mode and
create a novel non equilibrium superradiant superconductivity

(SRSC) is suggested. Our mechanism offers a hope to
realize transient superconductivity, even at room temperatures, in the pseudo
gap phase of certain underdoped cuprates. Recent experiments are briefly
discussed in this light. Further SRSC exhibits interesting quantum entanglement
and superfluorescence properties.

Event Type: 
Seminar
Collection/Series: 
Scientific Area(s): 
Speaker(s): 
Event Date: 
Vendredi, Novembre 16, 2012 - 14:30 to 16:00
Location: 
Time Room