Coupling of a single tin-vacancy center to a photonic crystal cavity in diamond

Kazuhiro Kuruma; Benjamin Pingault; Cleaven Chia; Dylan Renaud; Patrick Hoffmann; Satoshi Iwamoto; Carsten Ronning; Marko Lončar

doi:10.1063/5.0051675

Coupling of a single tin-vacancy center to a photonic crystal cavity in diamond

Kazuhiro Kuruma^*, Benjamin Pingault, Cleaven Chia, Dylan Renaud, Patrick Hoffmann, Satoshi Iwamoto, Carsten Ronning, Marko Lončar

^*Corresponding author for this work

QID/Taminiau Lab

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

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Abstract

We demonstrate optical coupling between a single tin-vacancy (SnV) center in diamond and a free-standing photonic crystal nanobeam cavity. The cavities are fabricated using quasi-isotropic etching and feature experimentally measured quality factors as high as ∼11 000. We investigate the dependence of a single SnV center's emission by controlling the cavity wavelength using a laser-induced gas desorption technique. Under resonance conditions, we observe an intensity enhancement of the SnV emission by a factor of 12 and a 16-fold reduction of the SnV lifetime. Based on the large enhancement of the SnV emission rate inside the cavity, we estimate the Purcell factor for the SnV zero-phonon line to be 37 and the coupling efficiency of the SnV center to the cavity, the β factor, to be 95%. Our work paves the way for the realization of quantum photonic devices and systems based on efficient photonic interfaces using the SnV color center in diamond.

Original language	English
Article number	230601
Number of pages	6
Journal	Applied Physics Letters
Volume	118
Issue number	23
DOIs	https://doi.org/10.1063/5.0051675
Publication status	Published - 2021

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title = "Coupling of a single tin-vacancy center to a photonic crystal cavity in diamond",

abstract = "We demonstrate optical coupling between a single tin-vacancy (SnV) center in diamond and a free-standing photonic crystal nanobeam cavity. The cavities are fabricated using quasi-isotropic etching and feature experimentally measured quality factors as high as ∼11 000. We investigate the dependence of a single SnV center's emission by controlling the cavity wavelength using a laser-induced gas desorption technique. Under resonance conditions, we observe an intensity enhancement of the SnV emission by a factor of 12 and a 16-fold reduction of the SnV lifetime. Based on the large enhancement of the SnV emission rate inside the cavity, we estimate the Purcell factor for the SnV zero-phonon line to be 37 and the coupling efficiency of the SnV center to the cavity, the β factor, to be 95%. Our work paves the way for the realization of quantum photonic devices and systems based on efficient photonic interfaces using the SnV color center in diamond.",

author = "Kazuhiro Kuruma and Benjamin Pingault and Cleaven Chia and Dylan Renaud and Patrick Hoffmann and Satoshi Iwamoto and Carsten Ronning and Marko Lon{\v c}ar",

year = "2021",

doi = "10.1063/5.0051675",

language = "English",

volume = "118",

journal = "Applied Physics Letters",

issn = "0003-6951",

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T1 - Coupling of a single tin-vacancy center to a photonic crystal cavity in diamond

AU - Kuruma, Kazuhiro

AU - Pingault, Benjamin

AU - Chia, Cleaven

AU - Renaud, Dylan

AU - Hoffmann, Patrick

AU - Iwamoto, Satoshi

AU - Ronning, Carsten

AU - Lončar, Marko

PY - 2021

Y1 - 2021

N2 - We demonstrate optical coupling between a single tin-vacancy (SnV) center in diamond and a free-standing photonic crystal nanobeam cavity. The cavities are fabricated using quasi-isotropic etching and feature experimentally measured quality factors as high as ∼11 000. We investigate the dependence of a single SnV center's emission by controlling the cavity wavelength using a laser-induced gas desorption technique. Under resonance conditions, we observe an intensity enhancement of the SnV emission by a factor of 12 and a 16-fold reduction of the SnV lifetime. Based on the large enhancement of the SnV emission rate inside the cavity, we estimate the Purcell factor for the SnV zero-phonon line to be 37 and the coupling efficiency of the SnV center to the cavity, the β factor, to be 95%. Our work paves the way for the realization of quantum photonic devices and systems based on efficient photonic interfaces using the SnV color center in diamond.

AB - We demonstrate optical coupling between a single tin-vacancy (SnV) center in diamond and a free-standing photonic crystal nanobeam cavity. The cavities are fabricated using quasi-isotropic etching and feature experimentally measured quality factors as high as ∼11 000. We investigate the dependence of a single SnV center's emission by controlling the cavity wavelength using a laser-induced gas desorption technique. Under resonance conditions, we observe an intensity enhancement of the SnV emission by a factor of 12 and a 16-fold reduction of the SnV lifetime. Based on the large enhancement of the SnV emission rate inside the cavity, we estimate the Purcell factor for the SnV zero-phonon line to be 37 and the coupling efficiency of the SnV center to the cavity, the β factor, to be 95%. Our work paves the way for the realization of quantum photonic devices and systems based on efficient photonic interfaces using the SnV color center in diamond.

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SN - 0003-6951

VL - 118

JO - Applied Physics Letters

JF - Applied Physics Letters

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M1 - 230601

ER -

Coupling of a single tin-vacancy center to a photonic crystal cavity in diamond

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