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A Single-Cooper-Pair Josephson Laser
Fei Chen, Juliang Li, A. D. Armour +6
The advent of quantum optical techniques based on superconducting circuits has opened new regimes in the study of the non-linear interaction of light with matter. Of particular int…
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…
State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
T. A. Palomaki, J. W. Harlow, J. D. Teufel +2
Recently, macroscopic mechanical oscillators have been coaxed into a regime of quantum behavior, by direct refrigeration [1] or a combination of refrigeration and laser-like coolin…
Remote Sensing and Control of Phase Qubits
Dale Li, Fabio C. S. da Silva, Danielle A. Braje +2
We demonstrate a remote sensing design of phase qubits by separating the control and readout circuits from the qubit loop. This design improves measurement reliability because the…
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…