91 citations · 342 across the 11 of their papers we have counts for
8 papers · 1 filter
Disentangling superconductor and dielectric microwave losses in sub-micron / interconnects using a multi-mode microstrip resonator
Cougar A. T. Garcia, Nancyjane Bailey, Chris Kirby +4
Understanding the origins of power loss in superconducting interconnects is essential for the energy efficiency and scalability of superconducting digital logic. At microwave frequ…
Josephson junction microwave modulators for qubit control
O. Naaman, J. A. Strong, D. G. Ferguson +3
We demonstrate Josephson junction based double-balanced mixer and phase shifter circuits operating at 6-10 GHz, and integrate these components to implement both a monolithic amplit…
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…
Frequency-Tunable Josephson Junction Resonator for Quantum Computing
K. D. Osborn, J. A. Strong, A. J. Sirois +1
We have fabricated and measured a high-Q Josephson junction resonator with a tunable resonance frequency. A dc magnetic flux allows the resonance frequency to be changed by over 10…