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 beta 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.

References in corpus (9)

• Single-Photon Switching and Entanglement of Solid-State Qubits in an Integrated Nanophotonic System
• Realization of a multi-node quantum network of remote solid-state qubits
• Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
• Deterministic Generation of a Cluster State of Entangled Photons
• Tin-Vacancy Quantum Emitters in Diamond
• High-Q optical nanocavities in bulk single-crystal diamond
• Coherent spin control of a nanocavity-enhanced qubit in diamond
• Deterministic coupling of a single silicon-vacancy color center to a photonic crystal cavity in diamond
• Single-photon-emitting optical centers in diamond fabricated upon Sn implantation

Cited by in corpus (2)

• A cavity-based optical antenna for color centers in diamond
• Telecommunication-wavelength two-dimensional photonic crystal cavities in a thin single-crystal diamond membrane