title: All-optical switching in an N-type foul-level atom-cavity system.
abstract: We report an experimental observation of all-optical switching in an N-type atom-cavity system with a rubidium atomic vapor cell inside an optical ring cavity. Both absorptive and dispersive switching can be realized on dark- or bright-polariton peaks by a weak switching laser beam (with the extinction ratio better than 20:1). The switching mechanism can be explained as the combination of quantum interference and intracavity dispersion properties.
authors.affiliation: Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA.
authors.forename: Jiteng
authors.initials: J
authors.lastname: Sheng
authors.forename: Xihua
authors.initials: X
authors.lastname: Yang
authors.forename: Utsab
authors.initials: U
authors.lastname: Khadka
authors.forename: Min
authors.initials: M
authors.lastname: Xiao