2.1k citations · 6.6k across the 34 of their papers we have counts for
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Tunable coupling to a mechanical oscillator circuit using a coherent feedback network
Joseph Kerckhoff, Reed W. Andrews, H. S. Ku +4
We demonstrate a fully cryogenic microwave feedback network composed of modular superconducting devices connected by transmission lines and designed to control a mechanical oscilla…
Time-Domain Detection of Weakly Coupled TLS Fluctuators in Phase Qubits
M. S. Allman, F. Altomare, J. D. Whittaker +6
We report on a method for detecting weakly coupled spurious two-level system fluctuators (TLSs) in superconducting qubits. This method is more sensitive that standard spectroscopic…
Tripartite interactions between two phase qubits and a resonant cavity
F. Altomare, J. I. Park, K. Cicak +7
The creation and manipulation of multipartite entangled states is important for advancements in quantum computation and communication, and for testing our fundamental understanding…
Measurement crosstalk between two phase qubits coupled by a coplanar waveguide
Fabio Altomare, Katarina Cicak, Mika A. Sillanpää +8
We analyze the measurement crosstalk between two flux-biased phase qubits coupled by a resonant coplanar waveguide cavity. After the first qubit is measured, the superconducting ph…
RFSQUID-Mediated Coherent Tunable Coupling Between a Superconducting Phase Qubit and a Lumped Element Resonator
M. S. Allman, F. Altomare, J. D. Whittaker +6
We demonstrate coherent tunable coupling between a superconducting phase qubit and a lumped element resonator. The coupling strength is mediated by a flux-biased RF SQUID operated…
Vacuum-Gap Capacitors for Low-Loss Superconducting Resonant Circuits
Katarina Cicak, Michael S. Allman, Joshua A. Strong +2
Low-loss microwave components are used in many superconducting resonant circuits from multiplexed readouts of low-temperature detector arrays to quantum bits. Two-level system defe…