3 papers
quant-ph2006
Two-bit Deutsch-Jozsa algorithm using an atomic ensemble
Shubhrangshu Dasgupta, G. S. Agarwal
The first optical proposal for the realization of the two-bit version of the Deutsch-Jozsa algorithm [D. Deutsch and R. Jozsa, Proc. R. Soc. London A {\bf 493}, 553 (1992)] is pres…
quant-ph2005
Quantum interferences from cross talk in transitions
Shubhrangshu Dasgupta
We consider the possibility of a control field opening up multiple pathways and thereby leading to new interference and coherence effects. We illustrate the idea by considering the…
physics.optics2003
Magneto-optical rotation of spectrally impure fields and its nonlinear dependence on optical density
G. S. Agarwal, Shubhrangshu Dasgupta
We calculate magneto-optical rptation of spectrally impure fileds in an optically thick cold atmic medium. We show that the spectral impurity leads to non-linear dependence of the…