Strong coupling between a photonic crystal nanobeam cavity and a single quantum dot

Ryuichi Ohta; Yasutomo Ota; Masahiro Nomura; Naoto Kumagai; Satomi Ishida; Satoshi Iwamoto; Yasuhiko Arakawa

doi:10.1063/1.3579535

Strong coupling between a photonic crystal nanobeam cavity and a single quantum dot

Ryuichi Ohta, Yasutomo Ota, Masahiro Nomura, Naoto Kumagai, Satomi Ishida, Satoshi Iwamoto, Yasuhiko Arakawa

Research output: Contribution to journal › Article › peer-review

87 Citations (Scopus)

Abstract

We demonstrated the strong coupling between a one-dimensional photonic crystal nanobeam cavity and a single quantum dot (QD). Thanks to a high quality factor (∼25 000) with small mode volume [0.38× (n/λ) ³] of the nanobeam cavity, an anticrossing behavior with a vacuum Rabi splitting of 226 μeV was observed. The ratio of the QD-cavity coupling strength to the cavity decay rate, which is a figure of merit of quantum optical applications, is estimated to 2.1. This is the highest value among any QD-based cavity quantum electrodynamics systems reported so far.

Original language	English
Article number	173104
Journal	Applied Physics Letters
Volume	98
Issue number	17
DOIs	https://doi.org/10.1063/1.3579535
Publication status	Published - 2011 Apr 25
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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AU - Ohta, Ryuichi

AU - Ota, Yasutomo

AU - Nomura, Masahiro

AU - Kumagai, Naoto

AU - Ishida, Satomi

AU - Iwamoto, Satoshi

AU - Arakawa, Yasuhiko

PY - 2011/4/25

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N2 - We demonstrated the strong coupling between a one-dimensional photonic crystal nanobeam cavity and a single quantum dot (QD). Thanks to a high quality factor (∼25 000) with small mode volume [0.38× (n/λ) 3] of the nanobeam cavity, an anticrossing behavior with a vacuum Rabi splitting of 226 μeV was observed. The ratio of the QD-cavity coupling strength to the cavity decay rate, which is a figure of merit of quantum optical applications, is estimated to 2.1. This is the highest value among any QD-based cavity quantum electrodynamics systems reported so far.

AB - We demonstrated the strong coupling between a one-dimensional photonic crystal nanobeam cavity and a single quantum dot (QD). Thanks to a high quality factor (∼25 000) with small mode volume [0.38× (n/λ) 3] of the nanobeam cavity, an anticrossing behavior with a vacuum Rabi splitting of 226 μeV was observed. The ratio of the QD-cavity coupling strength to the cavity decay rate, which is a figure of merit of quantum optical applications, is estimated to 2.1. This is the highest value among any QD-based cavity quantum electrodynamics systems reported so far.

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Strong coupling between a photonic crystal nanobeam cavity and a single quantum dot

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