39 citations · 156 across the 13 of their papers we have counts for
13 papers
Tantalum Damascene Coplanar Waveguide Resonators Fabricated Using 300 mm Scale Processes
Ekta Bhatia, Yingge Du, Krishna P Koirala +12
Surface oxides contribute to losses in superconducting transmon devices resulting in degraded performance. We explore the use of the damascene process to replace the sidewall nativ…
Readout-induced suppression and enhancement of superconducting qubit lifetimes
Ted Thorbeck, Zhihao Xiao, Archana Kamal +1
It has long been known that the lifetimes of superconducting qubits suffer during readout, increasing readout errors. We show that this degradation is due to the anti-Zeno effect,…
Strong parametric dispersive shifts in a statically decoupled multi-qubit cavity QED system
T. Noh, Z. Xiao, K. Cicak +8
Cavity quantum electrodynamics (QED) with in-situ tunable interactions is important for developing novel systems for quantum simulation and computing. The ability to tune the dispe…
Perturbative diagonalization for time-dependent strong interactions
Z. Xiao, E. Doucet, T. Noh +4
We present a systematic method to implement a perturbative Hamiltonian diagonalization based on the time-dependent Schrieffer-Wolff transformation. Applying our method to strong pa…
Strong coupling diagnostics for multi-mode open systems
C. Kow, Z. Xiao, A. Metelmann +1
We present a new method to diagnose strong coupling in multi-mode open systems. Our method presents a non-trivial extension of exceptional point (EP) analysis employed for such sys…
An analytically simple and computationally efficient Gaussian beam mode-decomposition approach to classical diffraction theory
Zhihao Xiao, R. Nicholas Lanning, Mi Zhang +3
We present a method of Gaussian-beam-mode decomposition to calculate classical diffraction of optical beams by apertures. This method offers a entirely different approach to examin…
Fast Amplification and Rephasing of Entangled Cat States in a Qubit-Oscillator System
Z. Xiao, T. Fuse, S. Ashhab +5
We study a qubit-oscillator system, with a time-dependent coupling coefficient, and present a scheme for generating entangled Schrödinger-cat states with large mean photon numbers…
Quantized Nonlinear Gaussian-Beam Dynamics Tailoring Multimode Squeezed-Light Generation
R. Nicholas Lanning, Zhihao Xiao, Mi Zhang +3
We present a general, second quantization procedure for multi-transverse-spatial mode Gaussian beam dynamics in nonlinear interactions. Previous treatments have focused on the spec…
Multi-pass configuration for Improved Squeezed Vacuum Generation in Hot Rb Vapor
Mi Zhang, Melissa A. Guidry, R. Nicholas Lanning +4
We study a squeezed vacuum field generated in hot Rb vapor via the polarization self-rotation effect. Our previous experiments showed that the amount of observed squeezing may be l…
Why a hole is like a beam splitter--a general diffraction theory for multimode quantum states of light
Zhihao Xiao, R. Nicholas Lanning, Mi Zhang +3
Within the second-quantization framework, we develop a formalism for describing a spatially multimode optical field diffracted through a spatial mask and show that this process can…
Gaussian Beam-Propagation Theory for Nonlinear Optics - Featuring an Exact Treatment of Orbital Angular Momentum Transfer
R. Nicholas Lanning, Zhihao Xiao, Mi Zhang +3
We present a general, Gaussian spatial mode propagation formalism for describing the generation of higher order multi-spatial-mode beams generated during nonlinear interactions. Fu…
Spatial Multi-Mode Structure of Atom-Generated Squeezed Light
Mi Zhang, R. Nicholas Lanning, Zhihao Xiao +3
We investigated the spatial distribution of quantum fluctuations in a squeezed vacuum field, generated via polarization self-rotation (PSR) interaction of an ensemble of Rb atoms a…
Efficiency of dynamical decoupling sequences in presence of pulse errors
Zhihao Xiao, Lewei He, Wen-ge Wang
For a generic dynamical decoupling sequence employing a single-axis control, we study its efficiency in the presence of small errors in direction of the controlling-pulses. In the…