Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

High-visibility Franson interference of time–energy entangled photon pairs from warm atomic ensemble

Not Accessible

Your library or personal account may give you access

Abstract

We experimentally demonstrate Franson interference of a time–energy entangled photon pair generated via collective two-photon coherence in the 5S1/25P3/25D5/2 transition of warm Rb87 atoms. The two unbalanced Michelson interferometers used in our setup are spatially separated in order to understand entanglement as a nonlocal property of the photon pairs from the warm atomic ensemble. We observe a Franson interference fringe with a high visibility of 99.1±1.3% with continuous-wave-mode photon pairs from the cascade-type atomic ensemble. To the best of our knowledge, this work is the first demonstration of the nonlocal two-photon interference experiment in separated photon channels by use of two-photon pairs emitted from a cascade-type atomic system as originally proposed by Franson [Phys. Rev. Lett. 62, 2205 (1989) [CrossRef]  ].

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Entanglement swapping with autonomous polarization-entangled photon pairs from a warm atomic ensemble

Jiho Park, Heonoh Kim, and Han Seb Moon
Opt. Lett. 45(8) 2403-2406 (2020)

Observation of second-order interference beyond the coherence time with true thermal photons

Gyu-Hyeok Lee, Dong-Gil Im, Yosep Kim, U-Shin Kim, and Yoon-Ho Kim
Opt. Lett. 45(24) 6748-6751 (2020)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved