A5040108991- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Information and Cryptography
- Diamond and Carbon-based Materials Research
- Quantum Computing Algorithms and Architecture
- Quantum optics and atomic interactions
- Electronic and Structural Properties of Oxides
- Advanced Frequency and Time Standards
- Statistical Methods in Clinical Trials
- Quantum Mechanics and Applications
- Modular Robots and Swarm Intelligence
- Quantum and electron transport phenomena
- Machine Learning in Materials Science
- Quantum many-body systems
- Photonic and Optical Devices
- Personal Information Management and User Behavior
- High-pressure geophysics and materials
- Orbital Angular Momentum in Optics
- Computability, Logic, AI Algorithms
- Advanced Materials Characterization Techniques
- Atomic and Subatomic Physics Research
- Semiconductor Quantum Structures and Devices
- Quantum, superfluid, helium dynamics
Delft University of Technology
2023-2025
QuTech
2023-2024
Laboratoire Charles Fabry
2020-2022
Centre National de la Recherche Scientifique
2020-2022
Institut d’Optique Graduate School
2020-2022
Université Paris-Saclay
2020-2022
The authors describe the capability of an atom-by-atom assembler to create large arrays neutral atoms and provide overview advances that can be realized through several new sorting algorithms, including one enables assembly arbitrary, nonregular target arrays. performance enhanced is then demonstrated experimentally.
We report on the realization of large assembled arrays more than 300 single $^{87}\mathrm{Rb}$ atoms trapped in optical tweezers a cryogenic environment at $\ensuremath{\sim}4$ K. For with ${N}_{\mathrm{a}}=324$ atoms, assembly process results defect-free $\ensuremath{\sim}37%$ realizations. To achieve this high assembling efficiency, we equalize loading probability traps within array using closed-loop optimization power each tweezer, based analysis fluorescence time traces loaded traps.
Spins associated to solid-state color centers are a promising platform for investigating quantum computation and networks. Recent experiments have demonstrated multiqubit processors, optical interconnects, basic error-correction protocols. One of the key open challenges towards larger-scale systems is realize high-fidelity universal gates. In this work, we design demonstrate complete gate set two-qubit system formed by electron nuclear spin nitrogen-vacancy center in diamond. We use...
We report on the trapping of single $\mathrm{Rb}$ atoms in tunable arrays optical tweezers a cryogenic environment at approximately 4 K. describe design and construction experimental apparatus, based custom-made UHV-compatible closed-cycle cryostat with access. demonstrate tweezers, lifetimes up to 6000 s, despite fact that vacuum system has not been baked out. These results open way large extended coherence, for applications large-scale quantum simulation many-body systems and, more...
Color-center quantum bits (qubits), such as the Nitrogen-Vacancy center (NV) in diamond, have demonstrated entanglement between remote (>1.3km) qubits and excellent coherence times [1], all while operating at a few Kelvins. Compared to other qubit technologies typically mK temperatures, higher temperature of NVs enables scalable 3D integration with cryo-CMOS control electronics [2], provides significantly more cooling power, removes interconnect bottleneck prior art [3–5]. Yet, no controller...
Spins associated to solid-state colour centers are a promising platform for investigating quantum computation and networks. Recent experiments have demonstrated multi-qubit processors, optical interconnects, basic error correction protocols. One of the key open challenges towards larger-scale systems is realize high-fidelity universal gates. In this work, we design demonstrate complete gate set two-qubit system formed by electron nuclear spin nitrogen-vacancy center in diamond. We use...
We discuss measurements on single NV centers in isotopically purified diamond and show coherent optical transitions combined with enhanced electron carbon spin coherence. These results open avenues for new quantum network applications.
Optically active spins in solid state materials are an important candidate for quantum communication and distributed computation over a network. To increase the size of networks, long-lived memories network node high-fidelity control qubits nodes desired. We discuss how isotopically engineered diamond can offer nuclear spin that robust to optical link operation NV center. Furthermore, we use gate set tomography report single-qubit two-qubit fidelities exceeding 99.9% electron...
We demonstrate high-fidelity one- and two-qubit gates long-lived quantum memory using NV centers in isotopically engineered diamond. These results key requirements for distributed computing based on spins
We report on the realization of large assembled arrays more than 300 single $^{87}$Rb atoms trapped in optical tweezers a cryogenic environment at $\sim4$~K. For with $N_{\rm a}=324$ atoms, assembly process results defect-free $\sim37\%$ realizations. To achieve this high assembling efficiency, we equalize loading probability traps within array using closed-loop optimization power each tweezers, based analysis fluorescence time-traces loaded traps.