A5089859339- Quantum and electron transport phenomena
- Quantum Information and Cryptography
- Atomic and Subatomic Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Computing Algorithms and Architecture
- Quantum optics and atomic interactions
- Atomic and Molecular Physics
- Quantum Mechanics and Applications
- Mechanical and Optical Resonators
- Quantum Chromodynamics and Particle Interactions
- Semiconductor Quantum Structures and Devices
- Advanced Electrical Measurement Techniques
- Advanced Data Storage Technologies
- Physics of Superconductivity and Magnetism
- Laser-Matter Interactions and Applications
- Photonic and Optical Devices
- Power System Optimization and Stability
- Magnetic properties of thin films
- Gyrotron and Vacuum Electronics Research
- Radioactive Decay and Measurement Techniques
- Particle physics theoretical and experimental studies
- stochastic dynamics and bifurcation
- Spectroscopy and Laser Applications
- Quantum, superfluid, helium dynamics
- Advancements in Photolithography Techniques
Yale University
2012-2020
IBM (United States)
2014-2015
Lafayette College
2006
Three-dimensional microwave cavities have recently been combined with superconducting qubits in the circuit quantum electrodynamics (cQED) architecture. These should less sensitivity to dielectric and conductor losses at surfaces interfaces, which currently limit performance of planar resonators. We expect that significantly (>10^3) higher quality factors longer lifetimes be achievable for 3D structures. Motivated by this principle, we reached internal greater than 0.5x10^9 intrinsic 0.01...
We have measured the plasma resonances of an array Josephson junctions in regime ${E}_{J}\ensuremath{\gg}{E}_{C}$, up to ninth harmonic by incorporating it as part a resonator capacitively coupled coplanar waveguide. From characteristics resonances, we infer successful implementation superinductance, electrical element with nondissipative impedance greater than resistance quantum [${R}_{Q}=h/(2e{)}^{2}\ensuremath{\simeq}6.5\text{ }\text{ }\mathrm{k}\ensuremath{\Omega}$] at microwave...
Superconducting order in a sufficiently narrow and infinitely long wire is destroyed at zero temperature by quantum fluctuations, which induce $2\pi$ slips of the phase parameter. However, finite-length coherent phase-slips would manifest themselves simply as shifts energy levels excitations spectrum an electrical circuit incorporating this wire. The higher probability amplitude, larger are shifts. Phase-slips occurring different locations along interfere with each other. Due to...
Physical implementations of qubits can be extremely sensitive to environmental coupling, which result in decoherence. While efforts are made for protection, coupling the environment is necessary measure and manipulate state qubit. As such, goal having long qubit energy relaxation times competition with that achieving high-fidelity control measurement. Here we propose a method integrates filtering techniques preserving superconducting lifetimes together dispersive microwave resonator The...
We report a first-principles study of the driven dissipative dynamics for Kerr oscillators in mesoscopic regime. This regime is characterized by large nonlinearity, realized here using nonlinear kinetic inductance array Josephson junctions. The experimentally measured resonance lineshapes junction modes show significant deviations from steady-state numerical predictions, and necessitate time-dependent simulations indicative strong measurement-induced dephasing system arising cross-Kerr...
We report the hyperfine coupling constants for $6d\phantom{\rule{0.2em}{0ex}}^{2}D_{J}$ states of $^{133}\mathrm{Cs}$ using two-color absorption spectroscopy with sub-Doppler resolution. Two single-mode diode lasers resonantly excite cesium in a low-pressure vapor cell. The frequency scale is directly referenced to ground interval $^{87}\mathrm{Rb}$ radio-frequency modulation technique. $6d\phantom{\rule{0.2em}{0ex}}^{2}D_{5∕2}$ are measured as...