Plasmon-enhanced polarized single photon source directly coupled to an optical fiber

• URL: http://arxiv.org/abs/2203.01591v1
• Date: Thu, 3 Mar 2022 09:34:29 GMT
• Title: Plasmon-enhanced polarized single photon source directly coupled to an optical fiber
• Authors: Masakazu Sugawara, Yining Xuan, Yasuyoshi Mitsumori, Keiichi Edamatsu, and Mark Sadgrove
• Abstract summary: A bright source of fiber-coupled, polarized single photons is an essential component of any realistic quantum network. We develop a Purcell enhanced, polarized source of single photons at room temperature by coupling single colloidal quantum dots to localized surface plasmon-polariton modes of single gold nanorods.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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 photon emission of 62 times was measured corresponding to a degree of polarization of 86 $\%$, 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.

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