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Observation of enhanced coherence in Josephson SQUID cavities using a hybrid fabrication approach
S. Yanai, G. A. Steele
We study the coherence of flux-tunable Josephson junction resonators made with two different fabrication processes. In the first process, devices are made using a single step of ev…
Photon-Pressure Strong-Coupling between two Superconducting Circuits
D. Bothner, I. C. Rodrigues, G. A. Steele
The nonlinear, parametric coupling between two harmonic oscillators has been used in the field of optomechanics for breakthrough experiments regarding the control and detection of…
Flux-mediated optomechanics with a transmon qubit in the single-photon ultrastrong-coupling regime
Marios Kounalakis, Yaroslav M. Blanter, Gary A. Steele
We propose a scheme for controlling a radio-frequency mechanical resonator at the quantum level using a superconducting qubit. The mechanical part of the circuit consists of a susp…
QuCAT: Quantum Circuit Analyzer Tool in Python
Mario F. Gely, Gary A. Steele
Quantum circuits constructed from Josephson junctions and superconducting electronics are key to many quantum computing and quantum optics applications. Designing these circuits in…
Coupling microwave photons to a mechanical resonator using quantum interference
I. C. Rodrigues, D. Bothner, G. A. Steele
In recent years, the field of microwave optomechanics has emerged as leading platform for achieving quantum control of macroscopic mechanical objects. Implementations of microwave…
Tunneling spectroscopy of localized states of barriers in vertical van der Waals heterostructures
Nikos Papadopoulos, Pascal Gehring, Kenji Watanabe +3
In transition metal dichalcogenides, defects have been found to play an important role, affecting doping, spin-valley relaxation dynamics, and assisting in proximity effects of spi…