60 citations · 260 across the 12 of their papers we have counts for
6 papers · 1 filter
Simple coplanar waveguide resonator mask targeting metal-substrate interface
Cameron J. Kopas, Ella Lachman, Corey Rae H. McRae +4
This white paper presents a single-layer mask, found at https://github.com/Boulder-Cryogenic-Quantum-Testbed/simple-resonator-mask. It is designed for fabrication of superconductin…
Resonant Energy Transfer Under the Influence of the Evanescent Field from the Metal
Amrit Poudel, Xin Chen, Mark A. Ratner
We present a quantum framework based on a density matrix of a dimer system to investigate the quantum dynamics of excitation energy transfer (EET) in the presence of the evanescent…
Nonadiabatic Dynamics of a Dissipative Two-level System
Canran Xu, Amrit Poudel, Maxim G. Vavilov
We study the dynamics of a two-level system described by a slowly varying Hamiltonian and weakly coupled to the Ohmic environment. We follow the Bloch--Redfield perturbative approa…
Qubit relaxation from evanescent-wave Johnson noise
Luke S. Langsjoen, Amrit Poudel, Maxim G. Vavilov +1
In many quantum computer architectures, the qubits are in close proximity to metallic device elements. Metals have a high density of photon modes, and the fields spill out of the b…
Quantum efficiency of a microwave photon detector based on a current-biased Josephson junction
Amrit Poudel, Robert McDermott, Maxim G. Vavilov
We analyze the quantum efficiency of a microwave photon detector based on a current-biased Josephson junction. We consider the Jaynes-Cummings Hamiltonian to describe coupling betw…
Effect of Ohmic environment on optimally controlled flux-biased phase qubit
Amrit Poudel, Maxim G. Vavilov
We analyze the effect of environment on the gate operation of flux-biased phase qubits. We employ the master equation for a reduced density matrix of the qubit system coupled to an…