Open AccessHarnessing quantum superposition and interference in atomic systems
Author(s) -
A. Kani,
Harshawardhan Wanare
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.015305
Subject(s) - superposition principle , electromagnetically induced transparency , physics , quantum , interference (communication) , quantum optics , polarization (electrochemistry) , quantum mechanics , refractive index , quantum superposition , excited state , optics , chemistry , telecommunications , channel (broadcasting) , computer science
We propose resilient quantum superposition states in closed-loop multilevel system which result in myriad quantum interference phenomena. An interplay of these superposition states results in a whole gamut of atomic phenomena including coherent population trapping (CPT), electromagnetically induced transparency (EIT), electromagnetically induced absorption (EIA), amplification without inversion (AWI) and enhancement of refractive index accompanied with negligible absorption. The polarization and the phases of the fields transform the underlying superposition of the excited states leading to all these effects, where, given the macroscopic nature of these phenomena the quantum superposition states as well as the synergy between them can be ascertained. Numerical simulations for D1 transition in room temperature Rb 87 atomic vapour system bear out these findings.