Sub- and super-luminal light propagation using a Rydberg state

Bharti, Vineet and Natarajan, Vasant (2017) Sub- and super-luminal light propagation using a Rydberg state. In: OPTICS COMMUNICATIONS, 392 . pp. 180-184.

PDF Opt_Com_392_180_2017.pdf - Published Version Restricted to Registered users only Download (619kB) | Request a copy

Abstract

We present a theoretical study to investigate sub-and super-luminal light propagation in a rubidium atomic system consisting of a Rydberg state by using density matrix formalism. The analysis is performed in a 4-level vee+ladder system interacting with a weak probe, and strong control and switching fields. The dispersion and absorption profiles are shown for stationary atoms as well as for moving atoms by carrying out Doppler averaging at room temperature. We also present the group index variation with control Rabi frequency and observe that a transparent medium can be switched from sub-to super-luminal propagation in the presence of switching field. Finally, the transient response of the medium is discussed, which shows that the considered 4 level scheme has potential applications in absorptive optical switching.

Item Type:	Journal Article
Publication:	OPTICS COMMUNICATIONS
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	20 May 2017 04:02
Last Modified:	20 May 2017 04:02
URI:	http://eprints.iisc.ac.in/id/eprint/56703

Actions (login required)

View Item