162 citations · 743 across the 12 of their papers we have counts for
5 papers · 1 filter
Dispersive Response of a Disordered Superconducting Quantum Metamaterial
Dmitriy S. Shapiro, Pascal Macha, Alexey N. Rubtsov +1
We consider a disordered quantum metamaterial formed by an array of superconducting flux qubits coupled to microwave photons in a cavity. We map the system on the Tavis-Cummings mo…
Dressed-state amplification by a superconducting qubit
G. Oelsner, P. Macha, O. V. Astafiev +6
We demonstrate amplification of a microwave signal by a strongly driven two-level system in a coplanar waveguide resonator. The effect known from optics as dressed-state lasing is…
Spectroscopy of a Qubit Array via a Single Transmission Line
M. Jerger, S. Poletto, P. Macha +4
Frequency-selective readout for superconducting qubits opens the way towards scaling qubit circuits up without increasing the number of measurement lines. Here we demonstrate the r…
Losses in coplanar waveguide resonators at millikelvin temperatures
P. Macha, S. H. W. van der Ploeg, G. Oelsner +4
We study the loss rate for a set of lambda/2 coplanar waveguide resonators at millikelvin temperatures (20 mK - 900mK) and different applied powers (3E-19 W - 1E-12 W). The loss ra…
Weak continuous monitoring of a flux qubit using coplanar waveguide resonator
G. Oelsner, S. H. W. van der Ploeg, P. Macha +9
We study a flux qubit in a coplanar waveguide resonator by measuring transmission through the system. In our system with the flux qubit decoupled galvanically from the resonator, t…