A5060544876- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Information and Cryptography
- Quantum optics and atomic interactions
- Quantum Mechanics and Applications
- Atomic and Subatomic Physics Research
- Advanced Frequency and Time Standards
- Quantum Computing Algorithms and Architecture
- Quantum, superfluid, helium dynamics
- Laser-Matter Interactions and Applications
- Spectroscopy and Laser Applications
- Various Chemistry Research Topics
- Laser-Plasma Interactions and Diagnostics
- Atomic and Molecular Physics
- Semiconductor Quantum Structures and Devices
- Advanced Data Storage Technologies
- Ocular Oncology and Treatments
- Photonic and Optical Devices
- History and advancements in chemistry
- Laser Design and Applications
- Orbital Angular Momentum in Optics
- Mass Spectrometry Techniques and Applications
- Hematological disorders and diagnostics
- Distributed and Parallel Computing Systems
- Computational Physics and Python Applications
- Optical properties and cooling technologies in crystalline materials
Oak Ridge National Laboratory
2021-2023
Quantum Science Center
2022
Georgia Tech Research Institute
2020-2021
Georgia Institute of Technology
2020-2021
Northwestern University
2014-2016
University of Oregon
2016
Entanglement generation in trapped-ion systems has relied thus far on two distinct but related geometric phase gate techniques: Molmer-Sorensen and light-shift gates. We recently proposed a variant of the scheme where qubit levels are separated by an optical frequency [B. C. Sawyer K. R. Brown, Phys. Rev. A 103, 022427 (2021)]. Here we report experimental demonstration this entangling using pair $^{40}$Ca$^+$ ions cryogenic surface-electrode ion trap commercial, high-power, 532 nm Nd:YAG...
Sensors, enabling observations across vast spatial, spectral, and temporal scales, are major data generators for information technology (IT). Processing, storing, communicating this ever-growing amount of pose challenges the current IT infrastructure. Edge computing—an emerging paradigm to overcome shortcomings cloud-based computing—could address these challenges. Furthermore, technologies such as quantum computing, sensing, communications have potential fill performance gaps left by their...
Vector diffraction theory is applied to the case of focused TEM(00) Gaussian beams passing through a spatially limiting aperture in order investigate propagation these clipped focused-Gaussian beams. Beam distributions at different axial distances show that traditional M(2) model cannot be used for focus-Gaussian Using Luneberg's vector and Fresnel approximations, an analytical on-axis transverse longitudinal electric fields intensity presented including predictions maximum obtainable...
The Libbrecht--Hall circuit is a well-known, low-noise current driver for narrow-linewidth diode lasers. An important feature of the limit to protect laser diode. As approaches maximum limit, however, noise in increases dramatically. This paper documents this behavior and explores simple modifications alleviate issue.
Motional ground state cooling and internal preparation are important elements for quantum logic spectroscopy (QLS), a class of information processing. Since QLS does not require the high gate fidelities usually associated with computation simulation, it is possible to make simplifying choices in ion species protocols at expense some fidelity. Here, we report sideband motional detection $^{138}$Ba$^+$ sufficient fidelity without an extremely narrowband laser or use hyperfine structure. We two...
To date, individual addressing of ion qubits has relied primarily on local Rabi or transition frequency differences between ions created via electromagnetic field spatial gradients transport operations. Alternatively, it is possible to synthesize arbitrary one-qubit gates by leveraging phase in a global driving field. Here we report $^{40}$Ca$^+$ two-ion crystal using axial potential modulation gate laser We characterize the resulting performance randomized benchmarking, applying different...
Quantum computing offers a new paradigm for advancing high-energy physics research by enabling novel methods representing and reasoning about fundamental quantum mechanical phenomena. Realizing these ideals will require the development of computational tools modeling simulation, detection classification, data analysis, forecasting (HEP) experiments. While emerging hardware, software, applications are exciting opportunities, significant gaps remain in integrating such techniques into HEP...
We introduce the Trapped-Ion Surface Code Compiler (TISCC), a software tool that generates circuits for universal set of surface code patch operations in terms native trapped-ion gate set. To accomplish this, TISCC manages an internal representation system where repeating pattern trapping zones and junctions is arranged arbitrarily large rectangular grid. are compiled by instantiating patches on grid using methods to generate transversal over data qubits, rounds error correction stabilizer...
We present a framework for quantum process tomography of two-ion interactions that leverages modulations the trapping potential and composite pulses from global laser beam to achieve individual-ion addressing. Tomographic analysis identity delay processes reveals dominant error contributions decoherence slow qubit frequency drift during experiment. use this on two co-trapped $^{40}$Ca$^+$ ions analyze both an optimized overpowered Mølmer-Sørensen gate compare results less informative...