Stabilizing an optical cavity containing a bulk diamond crystal at millikelvin temperatures in a cryogen-free dilution refrigerator

Abstract

We successfully stabilized a Fabry-Pérot optical cavity incorporating a bulk diamond crystal at millikelvin temperatures in a cryogen-free dilution refrigerator with the pulse-tube cryocooler running. In stark contrast to previous demonstrations where lasers were locked to the cavities, our setup locks the cavity to a laser. Our measurements of cavity length fluctuation suggest that the setup could stabilize a cavity up to a finesse of $1.2\times 10^4$ without the diamond and $5.8\times 10^3$ with the diamond crystal. The finesse with a diamond crystal of approximately 90 is primarily limited by the absorption loss inside the diamond.

References in corpus (39)

• Cavity Optomechanics
• Interfacing single photons and single quantum dots with photonic nanostructures
• Cavity-based quantum networks with single atoms and optical photons
• Single-Photon Switching and Entanglement of Solid-State Qubits in an Integrated Nanophotonic System
• Quantum transduction of optical photons from a superconducting qubit
• Opto-mechanical transducers for long-distance quantum communication
• Using interference for high fidelity quantum state transfer in optomechanics
• Coherent coupling of a superconducting flux-qubit to an electron spin ensemble in diamond
• Bidirectional conversion between microwave and light via ferromagnetic magnons
• A quantum spin transducer based on nano electro-mechancial resonator arrays
• Fiber Fabry-Perot cavity with high finesse
• Hybrid quantum circuit with a superconducting qubit coupled to a spin ensemble
• Development of Quantum InterConnects for Next-Generation Information Technologies
• Tin-Vacancy Quantum Emitters in Diamond
• Proposal for an Optomechanical Traveling Wave Phonon-Photon Translator
• Quantum networks based on color centers in diamond
• Microwave-to-optics conversion using a mechanical oscillator in its quantum groundstate
• A magneto-optic modulator with unit quantum effciency
• Cavity quantum electro-optics
• Interfacing Superconducting Qubits and Telecom Photons via a Rare-Earth Doped Crystal
• Bidirectional electro-optic conversion reaching 1% efficiency with thin-film lithium niobate
• On-chip microwave-to-optical quantum coherent converter based on a superconducting resonator coupled to an electro-optic microresonator
• Heralded Generation and Detection of Entangled Microwave--Optical Photon Pairs
• A Fabry-Perot Microcavity for Diamond-Based Photonics
• Cavity-enhanced quantum network nodes
• Cavity quantum electro-optics: Microwave-telecom conversion in the quantum ground state
• NV${}^{-}$ Diamond Laser
• An integrated microwave-to-optics interface for scalable quantum computing
• Cavity enhanced Raman heterodyne spectroscopy in Er:YSO for microwave to optical signal conversion
• Vibrations on pulse tube based Dry Dilution Refrigerators for low noise measurements
• Design and low-temperature characterization of a tunable microcavity for diamond-based quantum networks
• Quantum microwave-optical interface with nitrogen-vacancy centers in diamond
• Interfacing microwave qubits and optical photons via spin ensembles
• Optimal design of diamond-air microcavities for quantum networks using an analytical approach
• A basic introduction to ultrastable optical cavities for laser stabilization
• A millikelvin all-fiber cavity optomechanical apparatus for merging with ultra-cold atoms in a hybrid quantum system
• Cryogenic broadband vibration measurement on a cryogen-free dilution refrigerator
• Probing Strong Coupling between a Microwave Cavity and a Spin Ensemble with Raman Heterodyne Spectroscopy
• Absorption and birefringence study for reduced optical losses in diamond with high NV concentration