Solid-state quantum registers consisting of optically active electron spins with nearby nuclear are promising building blocks for future technologies. For spin-1 registers, dynamical decoupling (DD) gates have been developed that enable the precise control multiple spin qubits. However, important class spin-<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>1</a:mn><a:mo>/</a:mo><a:mn>2</a:mn></a:mrow></a:math> systems, this method suffers from intrinsic...

Color centers integrated with nanophotonic devices have emerged as a compelling platform for quantum science and technology. Here, we integrate tin-vacancy in diamond waveguide investigate the interaction light at single-photon level both reflection transmission. We observe single-emitter-induced extinction of transmitted up to 25% measure nonlinear effect on photon statistics. Furthermore, demonstrate fully tunable interference between reflected field laser backscattered fiber end show...

Diamond tin-vacancy centers have emerged as a promising platform for quantum information science and technology. A key challenge their use in more-complex experiments scalable applications is the ability to prepare center desired charge state with optical transition at predefined frequency. Here we report on heralding such successful preparation using combination of laser excitation, photon detection, real-time logic. We first show that fluorescence counts collected during an optimized...

Efficient coupling of optically active qubits to optical cavities is a key challenge for solid-state-based quantum optics experiments and future technologies. Here we present photonic interface based on single tin-vacancy center in micrometer-thin diamond membrane coupled tunable open microcavity. We use the full tunability microcavity selectively address individual centers within cavity mode volume. Purcell enhancement transition evidenced both by excited state lifetime reduction linewidth...

The negatively charged tin-vacancy (SnV-) center in diamond has emerged as a promising platform for quantum computing and networks. To connect SnV- qubits large networks, in-situ tuning stabilization of their optical transitions are essential to overcome static dynamic frequency offsets induced by the local environment. Here we report on large-range centers using micro-electro-mechanically mediated strain control photonic integrated waveguide devices. We realize range >40 GHz, covering major...

The negatively charged tin-vacancy (SnV−) center in diamond has emerged as a promising platform for quantum computing and networks. To connect SnV− qubits large networks, situ tuning stabilization of their optical transitions are essential to overcome static dynamic frequency offsets induced by the local environment. Here, we report on large-range centers using micro-electro-mechanically mediated strain control photonic integrated waveguide devices. We realize range &amp;gt;40 GHz, covering...

We show coupling of an SnV center to a diamond waveguide 20% with almost transform-limited optical transitions. Besides, we control over the spin qubit and extend its coherence millisecond.

We show diamond Tin-Vacancy centers, coherently-coupled to a tunable microcavity. The exceptional optical properties of this emitter in combination with stable, high quality cavity enables transmission signal modulated by single emitter.

We demonstrate heralded initialization of charge state and optical transition frequency diamond tin-vacancy centers, using (off-)resonant lasers, photon detection real-time logic. Using this, we show tunability &gt; 100 MHz strongly improved coherence.

We present our optimized diamond fabrication process based on quasi-isotropic crystal-plane-dependent reactive-ion-etching at low and high temperature plasma regime. demonstrate successful integration of SnV centers in waveguides showing quantum non-linear effects. report latest results all-diamond photonic crystal cavities.

We report on the realization of a fiber-based microcavity, exhibiting low cavity length fluctuations in combination with full spatial and spectral tunability. The microcavity is used to demonstrate Purcell-enhancement diamond Tin-Vacancy centers.

We demonstrate coherent coupling of a single diamond Tin-Vacancy center to fiber-based microcavity, showing cavity transmission dip 50 % on resonance, and altered photon statistics in transmission.

Solid-state quantum registers consisting of optically active electron spins with nearby nuclear are promising building blocks for future technologies. For spin-1 registers, dynamical decoupling (DD) gates have been developed that enable the precise control multiple spin qubits. However, important class spin-1/2 systems, this method suffers from intrinsic selectivity limitations, resulting in reduced gate fidelities. Here we demonstrate improved single by an using Dynamically Decoupled Radio...

Efficient coupling of optically active qubits to optical cavities is a key challenge for solid-state-based quantum optics experiments and future technologies. Here we present photonic interface based on single Tin-Vacancy center in micrometer-thin diamond membrane coupled tunable open microcavity. We use the full tunability microcavity selectively address individual centers within cavity mode volume. Purcell enhancement transition evidenced both by excited state lifetime reduction linewidth...

Open microcavities offer great potential for the exploration and utilization of efficient spin-photon interfaces with Purcell-enhanced quantum emitters thanks to their large spectral spatial tunability combined high versatility sample integration. However, a major challenge this platform is sensitivity cavity length fluctuations in cryogenic environment, which leads resonance frequency variations thereby lowered averaged Purcell enhancement. This work presents closed-cycle fiber-based...

Open microcavities offer great potential for the exploration and utilization of efficient spin-photon interfaces with Purcell-enhanced quantum emitters thanks to their large spectral spatial tunability combined high versatility sample integration. However, a major challenge this platform is sensitivity cavity length fluctuations in cryogenic environment, which leads resonance frequency variations thereby lowered averaged Purcell enhancement. This work presents closed-cycle fiber-based...

Abstract Fractional charges can be induced by magnetic fluxes at the interface between a topological insulator (TI) and type-II superconductor due to axion electrodynamics. In Josephson junction array with hole in middle, these electronic states have phase interference an applied field <?CDATA $4\times 2\pi $?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mn>4</mml:mn> <mml:mo>×</mml:mo> <mml:mn>2</mml:mn> <mml:mi>π</mml:mi> </mml:math> period, addition 2...

We integrate tin-vacancy colour centres in diamond nanophotonic waveguides with a fiber-based coupling interface. From spectroscopic investigation we find narrow in-homogeneous distribution, almost transform-limited optical transitions and low spectral diffusion.

Diamond Tin-Vacancy centers have emerged as a promising platform for quantum information science and technology. A key challenge their use in more complex experiments scalable applications is the ability to prepare center desired charge state with optical transition at pre-defined frequency. Here we report on heralding such successful preparation using combination of laser excitation, photon detection, real-time logic. We first show that fluorescence counts collected during an optimized...

Color-centers integrated with nanophotonic devices have emerged as a compelling platform for quantum science and technology. Here we integrate tin-vacancy centers in diamond waveguide investigate the interaction light at single-photon level. We observe single-emitter induced extinction of transmitted up to 25% measure nonlinear effect on photon statistics. Furthermore, demonstrate fully tunable interference between reflected field laser back-scattered fiber end show corresponding controlled...

We fabricate single tin-vacancy centres in diamond, we perform spectroscopy and coherent population trapping to verify optical driving of the spin states. investigate integration diamond waveguides realise an efficient spin-photon interface.