67 citations · 94 across the 10 of their papers we have counts for
10 papers
Field-Based Formalism for Calculating Multi-Qubit Exchange Coupling Rates for Transmon Qubits
Ghazi Khan, Thomas E. Roth
Superconducting qubits are one of the most mature platforms for quantum computing, but significant performance improvements are still needed. To improve the engineering of these sy…
Multiphysics Numerical Method for Modeling Josephson Traveling-Wave Parametric Amplifiers
Samuel T. Elkin, Michael Haider, Thomas E. Roth
Josephson traveling-wave parametric amplifiers (JTWPAs) are wideband, ultralow-noise amplifiers used to enable the readout of superconducting qubits. While individual JTWPAs have a…
Analytical Quantum Full-Wave Solutions for a 3D Circuit Quantum Electrodynamics System
Soomin Moon, Dong-Yeop Na, Thomas E. Roth
High-fidelity general-purpose numerical methods are increasingly needed to improve superconducting circuit quantum information processor performance. One challenge in developing su…
Numerical Framework for Modeling Quantum Electromagnetic Systems Involving Finite-Sized Lossy Dielectric Objects in Free Space
Dong-Yeop Na, Thomas E Roth, Jie Zhu +2
The modified Langevin noise formalism has been proposed for the correct charaterization of quantum electromagnetic fields in the presence of finite-sized lossy dielectric objects i…
Generalized Helmholtz Decomposition for Modal Analysis of Electromagnetic Problems in Inhomogeneous Media
Jie Zhu, Thomas E. Roth, Dong-Yeop Na +1
Potential-based formulation with generalized Lorenz gauge can be used in the quantization of electromagnetic fields in inhomogeneous media. However, one often faces the redundancy…
Maxwell-Schrödinger Modeling of Superconducting Qubits Coupled to Transmission Line Networks
Thomas E. Roth, Samuel T. Elkin
In superconducting circuit quantum information technologies, classical microwave pulses are applied to control and measure the qubit states. Currently, the design of these microwav…
Quantum-Plasmonic Dynamics Modeled via a Modified Langevin Noise Formalism: Numerical Studies of Single-Photon Emission and Two-Photon Interference
Jisang Seo, Hyunwoo Choi, Thomas E Roth +3
Recent studies have established and rigorously validated a modified Langevin noise formalism that enables first-principles quantization of electromagnetic fields in open and dissip…
Full-Wave Methodology to Compute the Spontaneous Emission Rate of a Transmon Qubit
Thomas E. Roth, Weng C. Chew
The spontaneous emission rate (SER) is an important figure of merit for any quantum bit (qubit), as it can play a significant role in the control and decoherence of the qubit. As a…
An Introduction to the Transmon Qubit for Electromagnetic Engineers
Thomas E. Roth, Ruichao Ma, Weng C. Chew
One of the most popular approaches being pursued to achieve a quantum advantage with practical hardware are superconducting circuit devices. Although significant progress has been…
Circuit quantum electrodynamics: A new look toward developing full-wave numerical models
Thomas E. Roth, Weng C. Chew
Devices built using circuit quantum electrodynamics architectures are one of the most popular approaches currently being pursued to develop quantum information processing hardware.…