TY - JOUR
T1 - Plasmon-enhanced single photon source directly coupled to an optical fiber
AU - Sugawara, Masakazu
AU - Xuan, Yining
AU - Mitsumori, Yasuyoshi
AU - Edamatsu, Keiichi
AU - Sadgrove, Mark
N1 - Funding Information:
This research was partially supported by MEXT Quantum Leap Flagship Program (MEXT Q-LEAP) Grant No. JPMXS0118067581 and JSPS KAKENHI Grant No. JP20H01831. M. Sadgrove acknowledges support from the Nano-Quantum Information Research Division of Tokyo University of Science and a JSPS KAKENHI Grant-in-Aid for Transformative Research Areas (Grant No. JP22H051351). This research was partially performed using the facilities of the Fundamental Technology Center, Research Institute of Electrical Communication, Tohoku University.
Publisher Copyright:
© 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2022/10
Y1 - 2022/10
N2 - A bright source of fiber-coupled, polarized single photons is an essential component of any realistic quantum network based on today's existing fiber infrastructure. Here, we develop a Purcell-enhanced, polarized source of single photons at room temperature by coupling single colloidal quantum dots to the localized surface plasmon-polariton modes of single gold nanorods, combined on the surface of an optical nanofiber. A maximum enhancement of the photon emission rate of 62 times was measured corresponding to a degree of polarization of 85%, and a brightness enhancement of four times in the fiber mode. Evanescent coupling of photons to the nanofiber guided modes ensures automatic coupling to a single mode fiber. Our technique opens the way to realizing bright sources of polarized single photons connected to fiber networks using a simple composite technique.
AB - A bright source of fiber-coupled, polarized single photons is an essential component of any realistic quantum network based on today's existing fiber infrastructure. Here, we develop a Purcell-enhanced, polarized source of single photons at room temperature by coupling single colloidal quantum dots to the localized surface plasmon-polariton modes of single gold nanorods, combined on the surface of an optical nanofiber. A maximum enhancement of the photon emission rate of 62 times was measured corresponding to a degree of polarization of 85%, and a brightness enhancement of four times in the fiber mode. Evanescent coupling of photons to the nanofiber guided modes ensures automatic coupling to a single mode fiber. Our technique opens the way to realizing bright sources of polarized single photons connected to fiber networks using a simple composite technique.
UR - http://www.scopus.com/inward/record.url?scp=85144621825&partnerID=8YFLogxK
U2 - 10.1103/PhysRevResearch.4.043146
DO - 10.1103/PhysRevResearch.4.043146
M3 - Article
AN - SCOPUS:85144621825
SN - 2643-1564
VL - 4
JO - Physical Review Research
JF - Physical Review Research
IS - 4
M1 - 043146
ER -