12 citations · 27 across the 6 of their papers we have counts for
6 papers · 1 filter
Geometric Phase: a Diagnostic Tool for Entanglement
S. N. Sandhya, Subhashish Banerjee
Using a kinematic approach we show that the non-adiabatic, non-cyclic, geometric phase corresponding to the radiation emitted by a three level cascade system provides a sensitive d…
Entanglement distribution in and systems
S. N. Sandhya
We determine the two mode fock state of the radiation emitted by type three level atomic systems using the method of tomography described in our previous work. Utilizing the kn…
Tomography, Control and Characterization of Entanglement in Three level Atomic System
S. N. Sandhya, V. Ravishankar
We study the quantum correlations of the radiation emitted by three level atoms (cascade type) interacting with two driving fields. In the linear regime, and in the Weisskopf-Wigne…
Threshold non-linear absorption in Zeeman transitions
Andal Narayan, Abheera Hazra, S. N. Sandhya
We experimentally study the absorption spectroscopy from a collection of gaseous atoms at room temperature irradiated with three fields. Two of these fields are in a pump…
Effect of Atomic Coherence on Absorption in Four-level Systems: an Analytical study
S N Sandhya
Absorption profile of a four-level ladder atomic system interacting with three driving fields is studied perturbatively and analytical results are presented. Numerical results wher…
Resonance flourescence in atomic coherent systems: spectral features
S N Sandhya
We study resonance flourescence in a four level ladder system and illustrate some novel features due to quantum interference and atomic coherence effects. We find that under three…