A5036753502- Cold Atom Physics and Bose-Einstein Condensates
- Atomic and Subatomic Physics Research
- Quantum Information and Cryptography
- Quantum, superfluid, helium dynamics
- Photocathodes and Microchannel Plates
- Quantum Computing Algorithms and Architecture
- Molecular Junctions and Nanostructures
- Spectroscopy and Laser Applications
- Neural Networks and Reservoir Computing
- Analytical Chemistry and Sensors
- Particle accelerators and beam dynamics
- Electrochemical Analysis and Applications
- CO2 Reduction Techniques and Catalysts
- Quantum Mechanics and Applications
- Laser-Plasma Interactions and Diagnostics
- Control Systems and Identification
- Atomic and Molecular Physics
- Quantum optics and atomic interactions
- CCD and CMOS Imaging Sensors
- Magnetic confinement fusion research
- Hydrogen Storage and Materials
- Spectroscopy Techniques in Biomedical and Chemical Research
- Scientific Research and Discoveries
- Inertial Sensor and Navigation
- Laser Design and Applications
Joint Institute for Laboratory Astrophysics
2012-2017
University of Colorado Boulder
2014
University of Nebraska–Lincoln
2007
We describe and benchmark a new quantum charge-coupled device (QCCD) trapped-ion computer based on linear trap with periodic boundary conditions, which resembles race track. The system successfully incorporates several technologies crucial to future scalability—including electrode broadcasting, multilayer rf routing, magneto-optical (MOT) loading—while maintaining, in some cases exceeding, the gate fidelities of previous QCCD systems. is initially operated 32 qubits, but upgrades will allow...
We describe and benchmark a new quantum charge-coupled device (QCCD) trapped-ion computer based on linear trap with periodic boundary conditions, which resembles race track. The system successfully incorporates several technologies crucial to future scalability, including electrode broadcasting, multi-layer RF routing, magneto-optical (MOT) loading, while maintaining, in some cases exceeding, the gate fidelities of previous QCCD systems. is initially operated 32 qubits, but upgrades will...
Quantum processors based on linear arrays of trapped ions have achieved exceptional performance, but scaling to large qubit numbers requires realizing two-dimensional ion as envisioned in the quantum charge-coupled device (QCCD) architecture. Here, we present a scalable method for control crystals grid-based surface-electrode Paul trap and characterize it context transport operations that sort reorder multispecies crystals. By combining cowiring electrodes at translationally symmetric...
Cryogenic buffer-gas beams are a promising method for producing bright sources of cold molecular radicals cold-collision and chemical-reaction experiments. In order to use these in studies reactions with controlled collision energies or trapping experiments, one needs controlling the forward velocity beam. A Stark decelerator can be an effective tool mean speed molecules produced by supersonic jets, but efficient deceleration presents new challenges due longer pulse lengths. Traveling-wave...
We demonstrate a time-of-flight electron energy analyzer that operates at an 80MHz repetition rate. The yields resolution of 40meV for 3eV electrons. limit is dominated by the detector time (or temporal) resolution. With currently available with temporal 100ps, we predict less than 1meV 200meV This makes high rate analyzers promising low-technology alternative to current state-of-the-art techniques.
Cryogenic buffer-gas beam sources are capable of producing intense beams a wide variety molecules and have number advantages over traditional supersonic expansion sources. In this work, we report on neon matrix isolation study carbon clusters produced with cryogenic source. Carbon created by laser ablation graphite trapped in detected Fourier-transform infrared spectrometer the spectral range 4000-1000 cm-1. Through cluster production as function various system parameters, characterize...
In recent demonstrations of the quantum charge-coupled device (QCCD) computer architecture, circuit times are dominated by cooling. Some motional modes multi-ion crystals take orders-of-magnitude longer to cool than others because low coolant ion participation. Here we demonstrate a new technique, which call phonon rapid adiabatic passage (phrap), that avoids this issue coherently exchanging thermal populations selected on timescales short compared direct Analogous passage, quasi-statically...
In recent demonstrations of the quantum charge-coupled device computer architecture, circuit times are dominated by cooling. Some motional modes multi-ion crystals take orders magnitude longer to cool than others because low coolant ion participation. Here we demonstrate a new technique, that solves this issue coherently exchanging thermal populations selected on timescales short compared direct Using method, which call “phonon rapid adiabatic passage,” can achieve subquanta temperatures...
We present a scalable method for the control of ion crystals in grid-based surface electrode Paul trap and characterize it context transport operations that sort reorder multispecies crystals. By combining co-wiring electrodes at translationally symmetric locations each grid site with site-wise ability to exchange voltages applied two special gated by binary input, site-dependent are achieved using only fixed number analog voltage signals single digital input per site. In separate...
A method for the active feedback reduction of optical instrumental intensity asymmetries is presented. It based on fast chopping two spatially separated beams light with orthogonal linear polarizations that are recombined and passed through a quarter-wave plate to yield single beam rapidly flipping helicity. Active electro-optic has been successfully employed maintain this asymmetry below 10(-5).
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