A5042657731- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Mechanics and Applications
- Spectroscopy and Quantum Chemical Studies
- Quantum optics and atomic interactions
- Mass Spectrometry Techniques and Applications
- Laser-induced spectroscopy and plasma
- Atomic and Molecular Physics
- Quantum and electron transport phenomena
- Atomic and Subatomic Physics Research
- Photoreceptor and optogenetics research
- Photochemistry and Electron Transfer Studies
- Ion-surface interactions and analysis
- NMR spectroscopy and applications
- Electrochemical Analysis and Applications
- Laser-Matter Interactions and Applications
- Quantum Chromodynamics and Particle Interactions
- Quantum, superfluid, helium dynamics
- Nonlinear Optical Materials Studies
- Particle physics theoretical and experimental studies
- Advanced Chemical Physics Studies
- Photonic Crystals and Applications
- Diamond and Carbon-based Materials Research
- Laser-Ablation Synthesis of Nanoparticles
University of Waterloo
2020-2024
Nanyang Technological University
2019-2022
This work uses multi-level qudit systems for quantum computation in the context of trapped ions and show all necessary operations with along realistic error estimates.
Abstract Technical noise present in laser systems can limit their ability to perform high fidelity quantum control of atomic qubits. The ultimate floor for qubits driven with radiation is due spontaneous emission from excited energy levels. goal suppress the technical source below such that it no longer a limiting factor. It has been shown spectral structure have large influence on achievable fidelities, while prior studies contributions restricted magnitudes. Here, we study unique and...
To implement useful quantum algorithms which demonstrate advantage, we must scale currently demonstrated computers up significantly. Leading platforms such as trapped ions face physical challenges in including more information carriers. A less explored avenue for scaling the computational space involves utilizing rich energy level structure of a ion to encode multi-level qudits rather than two-level qubits. Here show control and single-shot readout with 13 states, using protocols can be...
Abstract Trapped ions have emerged as a front runner in quantum information processing due to their identical nature, all-to-all connectivity, and high fidelity operations. As current trapped ion technologies are scaled, it will be important improve the efficiency of loading ions, especially when working with long chains or rare isotopes. Here, we compare two different isotope-selective photoionization schemes for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">...
Abstract The elementary processes that accompany the interaction of ionizing radiation with biologically relevant molecules are fundamental importance. However, ultrafast structural rearrangement dynamics induced by ionization biomolecules in aqueous solution remain hitherto unknown. Here, we employ femtosecond optical pump-probe spectroscopy to elucidate vibrational wave packet follow photodetachment phenoxide, a mimic tyrosine, solution. Photodetachment phenoxide leads phenoxyl radical...
Abstract A unified picture of the electronic relaxation dynamics ionized liquid water has remained elusive despite decades study. Here, we employ sub-two-cycle visible to short-wave infrared pump-probe spectroscopy and ab initio nonadiabatic molecular simulations reveal that excess electron injected into conduction band (CB) undergoes sequential hydrated s ground state via an intermediate state, identified as p excited state. The measured CB -electron lifetimes are 0.26 ± 0.02 ps 62 10 fs,...
The $^{133}\mathrm{Ba}^+$ ion is a promising candidate as high-fidelity qubit, and the $^{137}\mathrm{Ba}^+$ isotope qudit ($d>2$). Barium metal very reactive, radioactive can only be sourced in small quantities, so most commonly used loading method, oven heating, less suited for barium, currently not possible $^{133}\mathrm{Ba}^+$.Pulsed laser ablation solves both of these problems by utilizing compound barium sources, while also giving some distinct advantages, such fast loading, displaced...
Trapped ions have emerged as a front runner in quantum information processing due to their identical nature, all-to-all connectivity, and high fidelity operations. As current trapped ion technologies are scaled, it will be important improve the efficiency of loading ions, which is currently slowest process operating computer. Here, we compare two isotope-selective photoionization schemes for $^{138}\mathrm{Ba}^+$ ions. We show that two-step scheme ending an autoionizing transition increases...
The 53rd Annual Meeting of the APS Division Atomic, Molecular and Optical Physics will take place from May 30 – June 3, 2022 in Orlando, Fl, USA. <a href="https://morressier.zoom.us/j/89880865272?pwd=SWxTRGhra1ZOSDBrSkhVZDBzVDR6UT09/">Virtual Presenter Help Desk</a>
Technical noise present in laser systems can limit their ability to perform high fidelity quantum control of atomic qubits. The ultimate floor for qubits driven with radiation is due spontaneous emission from excited energy levels. goal suppress the technical source below such that it no longer a limiting factor. It has been shown spectral structure have large influence on achievable fidelities, while prior studies contributions restricted magnitudes. Here, we study unique and introduce new...