Publications (23)
Non-parametric modeling of the intra-cluster gas using APEX-SZ bolometer imaging data
K. Basu, Y. -Y. Zhang, M. W. Sommer +23
We demonstrate the usability of mm-wavelength imaging data obtained from the APEX-SZ bolometer array to derive the radial temperature profile of the hot intra-cluster gas out to ra…
Galaxy cluster scaling relations measured with APEX-SZ
A. N. Bender, J. Kennedy, P. A. R. Ade +30
We present thermal Sunyaev-Zel'dovich effect (SZE) measurements for 42 galaxy clusters observed at 150 GHz with the APEX-SZ experiment. For each cluster, we model the pressure prof…
Experimental Investigation of an Eight Qubit Unit Cell in a Superconducting Optimization Processor
R. Harris, M. W. Johnson, T. Lanting +23
A superconducting chip containing a regular array of flux qubits, tunable interqubit inductive couplers, an XY-addressable readout system, on-chip programmable magnetic memory, and…
Linearized SQUID Array (LISA) for High Bandwidth Frequency-Domain Readout Multiplexing
T. Lanting, M. Dobbs, H. Spieler +2
We have designed and demonstrated a Superconducting Quantum Interference Device (SQUID) array linearized with cryogenic feedback. To achieve the necessary loop gain a 300 element s…
Probing High Frequency Noise with Macroscopic Resonant Tunneling
T. Lanting, M. H. S. Amin, M. W. Johnson +9
We have developed a method for extracting the high-frequency noise spectral density of an rf-SQUID flux qubit from macroscopic resonant tunneling (MRT) rate measurements. The extra…
A scalable control system for a superconducting adiabatic quantum optimization processor
M. W. Johnson, P. Bunyk, F. Maibaum +10
We have designed, fabricated and operated a scalable system for applying independently programmable time-independent, and limited time-dependent flux biases to control superconduct…