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Proceedings Paper

Ultrathin fiber-taper coupling with nitrogen vacancy centers in nanodiamonds at cryogenic temperatures
Author(s): Masazumi Fujiwara; Hong-Quan Zhao; Tetsuya Noda; Kazuhiro Ikeda; Hitoshi Sumiya; Shigeki Takeuchi
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Paper Abstract

We demonstrate successful cooling of ultrathin fiber tapers and their coupling with nitrogen vacancy (NV) centers in nanodiamonds at cryogenic temperatures. Nanodiamonds containing multiple NV centers are deposited on ultrathin fiber tapers with diameters ranging from 450-500 nm. The fiber tapers were successfully cooled down to 9 K with our special fiber mount and an optimization of cooling speed. The fluorescence coupled with the fiber tapers showed characteristic sharp zero-phonon lines of neutral and negatively charged NV centers. The present demonstration is important for the future NV-based quantum information devices and sensitive nanoscale cryogenic magnetometry.

Paper Details

Date Published: 15 March 2016
PDF: 6 pages
Proc. SPIE 9762, Advances in Photonics of Quantum Computing, Memory, and Communication IX, 97620X (15 March 2016); doi: 10.1117/12.2206144
Show Author Affiliations
Masazumi Fujiwara, Hokkaido Univ. (Japan)
Osaka Univ. (Japan)
Hong-Quan Zhao, Hokkaido Univ. (Japan)
Osaka Univ. (Japan)
Tetsuya Noda, Hokkaido Univ. (Japan)
Osaka Univ. (Japan)
Kazuhiro Ikeda, Sumitomo Electric Industries, Ltd. (Japan)
Hitoshi Sumiya, Sumitomo Electric Industries, Ltd. (Japan)
Shigeki Takeuchi, Hokkaido Univ. (Japan)
Osaka Univ. (Japan)
Kyoto Univ. (Japan)


Published in SPIE Proceedings Vol. 9762:
Advances in Photonics of Quantum Computing, Memory, and Communication IX
Zameer Ul Hasan; Philip R. Hemmer; Hwang Lee; Alan L. Migdall, Editor(s)

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