Spectral alignment of single-photon emitters in diamond using strain gradient

Abstract

Solid-state single-photon emitters are attractive for realization of integrated quantum systems due to their experimental convenience and scalability. Unfortunately, however, their complex mesoscopic environments cause photons from different emitters to be spectrally distinguishable. Here we demonstrate spectral alignment of two solid-state single-photon emitters by utilizing the strain gradient. Multiple germanium vacancy (GeV) color centers in diamond are created in fabricated diamond microcantilevers using focused ion beam implantation. The strain response of the electronic energy levels of the GeV is measured by inducing an electrically controlled strain in the device. Leveraging the large strain gradient, we tune two GeVs in the spot to emit at the same optical wavelength. Simultaneous resonant excitation of two spectrally aligned GeVs is demonstrated using a narrow linewidth laser. This strain gradient tuning can be used to realize spectrally identical quantum emitters for on-chip integrated quantum systems.

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• Tunable and Transferable Diamond Membranes for Integrated Quantum Technologies
• Optical switching of resonance fluorescence from a single germanium vacancy color center in diamond
• A Polarization Encoded Photon-to-Spin Interface
• Precise characterization of a silicon carbide waveguide fiber interface
• Hyperfine spectroscopy and fast, all-optical arbitrary state initialization and readout of a single, ten-level ${}^{73}$Ge vacancy nuclear spin qudit in diamond
• Quantum Electrometer for Time-Resolved Material Science at the Atomic Lattice Scale
• Large-Range Tuning and Stabilization of the Optical Transition of Diamond Tin-Vacancy Centers by In-Situ Strain Control
• Control of solid-state nuclear spin qubits using an electron spin-1/2
• Selective acoustic control of photon-mediated qubit-qubit interactions
• Scalable construction of hybrid quantum photonic cavities
• Strain Engineering of Quantum Emitters in Hexagonal Boron Nitride
• Qubit-qudit entanglement transfer in defect centers with high-spin nuclei
• Low-Temperature Spectroscopic Investigation of Lead-Vacancy Centers in Diamond Fabricated by High-Pressure and High-Temperature Treatment