87 citations · 294 across the 8 of their papers we have counts for
8 papers
Calibration of the cross-resonance two-qubit gate between directly-coupled transmons
A. D. Patterson, J. Rahamim, T. Tsunoda +8
Quantum computation requires the precise control of the evolution of a quantum system, typically through application of discrete quantum logic gates on a set of qubits. Here, we us…
Microwave response and electrical transport studies of disordered s wave superconductor: NbN thin films
D. Hazra, S. Jebari, R. Albert +4
It is now well known that the properties of the disordered s wave superconductors can deviate significantly from the prediction of standard Bardeen-Cooper-Schrieffer (BCS) theory.…
A bright on-demand source of anti-bunched microwave photons based on inelastic Cooper pair tunneling
Alexander Grimm, Florian Blanchet, Romain Albert +8
The ability to generate single photons is not only an ubiquitous tool for scientific exploration with applications ranging from spectroscopy and metrology to quantum computing, but…
The role of Coulomb interaction in superconducting NbTiN thin films
D. Hazra, N. Tsavdaris, A. Mukhtarova +9
We report on the superconducting properties of NbTiN thin films of thickness 10 nm, with different Ti fraction in the range , deposited b…
Quantum limited amplification from inelastic Cooper pair tunneling
S. Jebari, F. Blanchet, A. Grimm +7
Nature sets fundamental limits regarding how accurate the amplification of analog signals may be. For instance, a linear amplifier unavoidably adds some noise which amounts to half…
A self-aligned nano-fabrication process for vertical NbN-MgO-NbN Josephson junctions
A. Grimm, S. Jebari, D. Hazra +4
We present a new process for fabricating vertical NbN-MgO-NbN Josephson junctions using self-aligned silicon nitride spacers. It allows for a wide range of junction areas from 0.02…
Multiplying and detecting propagating microwave photons using inelastic Cooper-pair tunneling
Juha Leppäkangas, Michael Marthaler, Dibyendu Hazra +5
The interaction between propagating microwave fields and Cooper-pair tunneling across a DC voltage-biased Josephson junction can be highly nonlinear. We show theoretically that thi…
Superconducting properties of very high quality NbN thin films grown by high temperature chemical vapor deposition
D. Hazra, N. Tsavdaris, S. Jebari +6
Niobium nitride (NbN) is widely used in high-frequency superconducting electronics circuits because it has one of the highest superconducting transition temperatures ( …