A5005506992- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Information and Cryptography
- Quantum optics and atomic interactions
- Atomic and Subatomic Physics Research
- Advanced Power Generation Technologies
- Nuclear physics research studies
- Atomic and Molecular Physics
- Advanced Frequency and Time Standards
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Quantum Mechanics and Applications
- Electrostatics and Colloid Interactions
- Quantum and electron transport phenomena
National Institute of Standards and Technology
2022-2023
University of Colorado Boulder
2022-2023
University College London
2019
We report on the realization of a fast, scalable, and high-fidelity qubit architecture, based $^{171}$Yb atoms in an optical tweezer array. demonstrate several attractive properties this atom for its use as building block quantum information processing platform. Its nuclear spin 1/2 serves long-lived coherent two-level system, while rich, alkaline-earth-like electronic structure allows low-entropy preparation, fast control, readout. present near-deterministic loading protocol, which us to...
Three research groups have exploited the nuclear spins of ytterbium-171 to manipulate qubits before they are read out---an approach that could lead efficient error-correction schemes for trapped-atom computing platforms.
We implement mid-circuit operations in a 48-site array of neutral atoms, enabled by new methods for control the $\textit{omg}$ (optical-metastable-ground state qubit) architecture present ${}^{171}$Yb. demonstrate laser-based ground, metastable and optical qubits with average single-qubit fidelities $F_{g} = 99.968(3)$, $F_{m} 99.12(4)$ $F_{o} 99.804(8)$. With state-sensitive shelving between ground states, we realize non-destructive state-detection $^{171}$Yb, reinitialize either global or...
Experimental determinations of the absolute differential positronium-formation cross sections near ${0}^{\ensuremath{\circ}}$ for Ne, Ar, Kr, and Xe are presented compared with theory. The degree forward collimation, expressed by ratios differential-to-integral sections, is also computed theories other targets. Trends among targets structures at low energies emerge when considered as a function reduced total energy.