Quantum interferences in cooperative Dicke emission from spatial variation of the laser phase

S Das, GS Agarwal, MO Scully - Physical review letters, 2008 - APS
Physical review letters, 2008APS
We report the generation of a new quantum interference effect in spontaneous emission
from a resonantly driven system of two identical two-level atoms due to the spatial variation
of the laser phase at the positions of the atoms. This interference affects significantly the
spectral features of the emitted radiation and the quantum entanglement in the system. The
interference leads to dynamic coupling of the populations and coherences in a basis,
determined by the laser phase and represents a kind of vacuum mediated superexchange …
We report the generation of a new quantum interference effect in spontaneous emission from a resonantly driven system of two identical two-level atoms due to the spatial variation of the laser phase at the positions of the atoms. This interference affects significantly the spectral features of the emitted radiation and the quantum entanglement in the system. The interference leads to dynamic coupling of the populations and coherences in a basis, determined by the laser phase and represents a kind of vacuum mediated superexchange between the symmetric and antisymmetric states.
American Physical Society