Fiber-microsphere system at cryogenic temperatures toward cavity QED using diamond NV centers

Hideaki Takashima, Takeshi Asai, Kiyota Toubaru, Masazumi Fujiwara, Keiji Sasaki, Shigeki Takeuchi

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The coupling of a microsphere resonator to a tapered fiber was demonstrated at cryogenic temperatures (8 - 13 K) and investigated with a probe laser light whose frequency around the zero phonon line of nitrogen vacancy centers in diamond (638 nm). For this purpose, a liquid-heliumflow cryostat with a large sample chamber is developed and a resonance dip with a Q of 2 × 10 6 is observed. The resonance frequency and the coupling condition are found to be stable for a period of one hour.

Original languageEnglish
Pages (from-to)15169-15173
Number of pages5
JournalOptics Express
Volume18
Issue number14
DOIs
Publication statusPublished - Jul 5 2010
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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