A5043788637- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Cold Atom Physics and Bose-Einstein Condensates
- Spectroscopy and Quantum Chemical Studies
- Quantum optics and atomic interactions
- Atomic and Subatomic Physics Research
- Quantum Mechanics and Applications
- Pigment Synthesis and Properties
- Lanthanide and Transition Metal Complexes
- Magnetism in coordination complexes
- Quantum and electron transport phenomena
- Glass properties and applications
- Mechanical and Optical Resonators
- Advanced Optical Sensing Technologies
- Particle Detector Development and Performance
- Radiation Effects in Electronics
- Spectroscopy and Chemometric Analyses
- Stellar, planetary, and galactic studies
- CCD and CMOS Imaging Sensors
- Atomic and Molecular Physics
- Astro and Planetary Science
- Gamma-ray bursts and supernovae
- Mass Spectrometry Techniques and Applications
- Advanced NMR Techniques and Applications
- Ion-surface interactions and analysis
Duke University
2023
University of Washington
2018-2021
Seattle University
2018
Novosibirsk State University
2014-2018
International Tomography Center
2018
In this paper, direct observation of micromotion for multiple ions in a laser-cooled trapped ion crystal is discussed along with measurement technique amplitude. Micromotion directly observed using time-resolving, single-photon-sensitive camera that provides both fluorescence and position data each on the nanosecond time scale. amplitude phase are measured, allowing method to be sensitive tilts shifts chain from null radio-frequency quadrupole potential linear trap. Spatial resolution makes...
Qubit state detection is an important part of a quantum computation. As number qubits in register increases, it necessary to maintain high fidelity accurately measure the multi-qubit state. Here we present experimental demonstration high-fidelity trapped ion with average single qubit error 4.2(1.5) ppm and 4-qubit 17(2) ppm, limited by decay lifetime qubit, using novel single-photon-sensitive camera fast data collection, excellent temporal spatial resolution, low instrumental crosstalk.
Zero-field splitting (ZFS) of three high-spin Co(I) ( S = 1) clathrochelate complexes was determined by frequency-domain Fourier-transform THz-EPR (FD-FT THz-EPR). The following axial and rhombic ZFS values D E, respectively) were determined: [N( n-Bu)4]CoI(GmCl2)3(BPh)2 (1, D/ hc +16.43(1) cm-1, E/ 0.0(1) cm-1), [P(Me2N)4]CoI(GmCl2)3(BPh)2 (2, +16.67(4) [P(C6H5)4]CoI(GmCl2)3(BPh)2 (3, +16.72(2) 0.24(3) cm-1). Complementary susceptibility χ T measurements quantum chemistry calculations on 1...
To enhance the variational quantum eigensolver (VQE), CAFQA method can utilize classical computational capabilities to identify a better initial state than Hartree-Fock method. Previous research has demonstrated that provided by recovers more correlation energy of and results in faster convergence. In present study, we advance investigation demonstrating its advantages on high-fidelity trapped-ion computer located at Duke Quantum Center -- this is first experimental demonstration...
Identifying and characterizing multi-body interactions in quantum processes remains a significant challenge. This is partly because 2-body can produce an arbitrary time evolution, fundamental fact often called the universality of 2-local gates context computing. However, when unknown Hamiltonian respects U(1) symmetry such as charge or particle number conservation, N-body exhibit distinct symmetry-protected signature known phase, which fewer-body cannot mimic. We develop demonstrate...
In this work we discuss the progress of commissioning next-generation trapped-ion quantum computing system. Heating rates, coherence times, background gas collision individual-addressing cross-talk and other factors contributing to gate fidelity are discussed.
We study sympathetic cooling of the radial ion motion in a linear RF trap mixed barium-ytterbium chains. Barium ions are Doppler-cooled, while ytterbium cooled through their interaction with cold barium ions. estimate efficiency by measuring average occupation quantum numbers, and thus temperature, all normal modes chain. The full set orderings chain two have been probed, we show that thermal numbers for configurations strongly depend on aspect ratio. demonstrate efficient ratio approximately 2.9.
We are constructing a system to remotely entangle single trapped ytterbium ion with donor qubit in zinc oxide through photonic link as step towards the construction of hybrid quantum system.
Here we demonstrate the use of Tpx3cam, a novel single-photon sensitive camera, in trapped ion experiments. We perform detection multiple-qubit state as well observation micromotion linear chain.