23pED-8 Manipulation of Single Photons Using an Optical Nanofiber

Nayak Kaliprasanna

Kosuke Nakagawa, Ramachandrarao Yalla, K. Hakuta

K. P. Nayak, K. Hakuta

K. P. Nayak, Manoj Das, Makoto Morinaga +2 more

K. P. Nayak, Павел Николаевич Мелентьев, M. Morinaga +3 more

In the present work, the authors proposes a novel method to manipulate atoms and photons using a subwavelength-diameter silica-fiber, an optical nanofiber. We use laser-cooled Cs-atoms as working atom. The paper shows that fluorescence of a very small number of atoms around the optical nanofiber can be measured efficiently by detecting the photons coupled to the guided mode of the nanofiber. Atoms around the nanofiber behave like molecules made up of atom and nanofiber.

K. Hakuta, K. P. Nayak

Abstract We discuss how optical nanofibers, subwavelength-diameter fibers, can open new perspectives in quantum optical technologies theoretically and experimentally. Discussions are mainly focused on the manipulation of spontaneous emission for atoms around the nanofiber. We show that photons from single quantum emitters can be efficiently channeled into guided modes of the nanofiber. Especially by fabricating a cavity structure of the nanofiber, the channeling efficiency can be improved to exceed 80% although the cavity finesse is moderate. We discuss also how to realize such a nanofiber cavity experimentally.