Superradiant Superconductivity

Abstract

We suggest possibility of Dicke superradiance in superconductors. The necessary 2-level atoms are identified with Anderson pseudo spins in k-space, seeing a k-dependent self consistent mean field. A way to couple these 2-level bose atoms to a macroscopically excited coherent boson mode and create a novel nonequilibrium superradiant superconductivity (SRSC) is suggested. Our coherence transfer 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 the light of our theory. Quantum entanglement, QCP and superfluorescence properties follow.