Strong light matter interactions between semiconductor quantum dots and optical micro/nanocavities are useful resources for developing quantum information processing devices and for exploring diverse quantum optical phenomena. In pursuit of better device performances and novel physics, it is desirable to achieve a larger coupling constant between the quantum dot and the cavity while keeping the high coherence of the coupled system. In this letter, we report the observation of a large vacuum Rabi splitting of ∼328 μeV using a single InAs quantum dot embedded in a GaAs-based H0 photonic crystal nanocavity, which possesses a near-diffraction limited mode volume as well as a high experimental Q factor of ∼52 000. The resulting figure of merit of the strongly coupled systems, defined as a ratio of the coupling constant to the cavity decay rate, reaches 6.4, which is the record high value for semiconductor QD-nanocavity systems reported to date.
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Large vacuum Rabi splitting between a single quantum dot and an H0 photonic crystal nanocavity
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26 February 2018
Research Article|
February 26 2018
Large vacuum Rabi splitting between a single quantum dot and an H0 photonic crystal nanocavity
Yasutomo Ota;
Yasutomo Ota
a)
1
Institute for Nano Quantum Information Electronics, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Daisaku Takamiya;
Daisaku Takamiya
2
Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
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Ryuichi Ohta;
Ryuichi Ohta
b)
2
Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
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Hiroyuki Takagi;
Hiroyuki Takagi
2
Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
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Naoto Kumagai;
Naoto Kumagai
c)
1
Institute for Nano Quantum Information Electronics, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Satoshi Iwamoto;
Satoshi Iwamoto
1
Institute for Nano Quantum Information Electronics, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
2
Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
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Yasuhiko Arakawa
Yasuhiko Arakawa
1
Institute for Nano Quantum Information Electronics, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
2
Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
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a)
E-mail: ota@iis.u-tokyo.ac.jp
b)
Present address: NTT Basic Research Laboratories, Atsugi, Japan.
c)
Present address: National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.
Appl. Phys. Lett. 112, 093101 (2018)
Article history
Received:
November 21 2017
Accepted:
January 20 2018
Citation
Yasutomo Ota, Daisaku Takamiya, Ryuichi Ohta, Hiroyuki Takagi, Naoto Kumagai, Satoshi Iwamoto, Yasuhiko Arakawa; Large vacuum Rabi splitting between a single quantum dot and an H0 photonic crystal nanocavity. Appl. Phys. Lett. 26 February 2018; 112 (9): 093101. https://doi.org/10.1063/1.5016615
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