156 citations · 356 across the 14 of their papers we have counts for
14 papers
Low-temperature AFM with a microwave cavity optomechanical transducer
Ermes Scarano, Elisabet K. Arvidsson, August K. Roos +4
We demonstrate AFM imaging with a microcantilever force transducer where an integrated superconducting microwave resonant circuit detects cantilever deflection using the principles…
Characterization and benchmarking of a phase-sensitive two-qubit gate using direct digital synthesis
Mats O. Tholén, Riccardo Borgani, Christian Križan +2
We implement an iSWAP gate with two transmon qubits using a flux-tunable coupler. Precise control of the relative phase of the qubit-control pulses and the parametric-coupler drive…
Measurement and control of a superconducting quantum processor with a fully-integrated radio-frequency system on a chip
Mats O. Tholén, Riccardo Borgani, Giuseppe Ruggero Di Carlo +8
We describe a digital microwave platform called Presto, designed for measurement and control of multiple quantum bits (qubits) and based on the third-generation radio-frequency sys…
Multipartite entanglement in a microwave frequency comb
Shan W. Jolin, Gustav Andersson, J. C. Rivera Hernández +6
Significant progress has been made with multipartite entanglement of discrete qubits, but continuous variable systems may provide a more scalable path toward entanglement of large…
IQ Mixer Calibration for Superconducting Circuits
S. W. Jolin, R. Borgani, M. O. Tholén +2
An important device for modulation and frequency translation in the field of circuit quantum electrodynamics is the IQ mixer, an analog component for which calibration is necessary…
Squeezing and multimode entanglement of surface acoustic wave phonons
Gustav Andersson, Shan W. Jolin, Marco Scigliuzzo +6
Exploiting multiple modes in a quantum acoustic device could enable applications in quantum information in a hardware-efficient setup, including quantum simulation in a synthetic d…
Intermodulation spectroscopy as an alternative to pump-probe for the measurement of fast dynamics at the nanometer scale
Riccardo Borgani, David B. Haviland
We present an alternative approach to pump-probe spectroscopy for measuring fast charge dynamics with an atomic force microscope (AFM). Our approach is based on coherent multifrequ…
Fast multifrequency measurement of nonlinear conductance
Riccardo Borgani, Mojtaba Gilzad Kohan, Alberto Vomiero +1
We describe a phase-coherent multifrequency lock-in measurement technique that uses the inverse Fourier transform to reconstruct the nonlinear current-voltage characteristic (IVC)…
Calibrating torsional eigenmodes of micro cantilevers for dynamic measurement of frictional forces
Per-Anders Thorén, Riccardo Borgani, Daniel Forchheimer +1
Non-invasive thermal noise calibration of both torsional and flexural eigenmodes is performed on numerous cantilevers of 10 different types. We show that for all tipless and short-…
On modeling and measuring viscoelasticity with dynamic Atomic Force Microscopy
Per-Anders Thorén, Riccardo Borgani, Daniel Forchheimer +7
The interaction between a rapidly oscillating atomic force microscope tip and a soft material surface is described using both elastic and viscous forces with a moving surface model…
Background force compensation in dynamic atomic force microscopy
Riccardo Borgani, Per-Anders Thorén, Daniel Forchheimer +4
Background forces are linear long-range interactions of the cantilever body with its surroundings that must be compensated for in order to reveal tip-surface force, the quantity of…
A virtual instrument to standardise the calibration of atomic force microscope cantilevers
John E. Sader, Riccardo Borgani, Christopher T. Gibson +12
Atomic force microscope (AFM) users often calibrate the spring constants of cantilevers using functionality built into individual instruments. This is performed without reference t…
Imaging high-speed friction at the nanometer scale
Per-Anders Thorén, Astrid S. de Wijn, Riccardo Borgani +2
Friction is a complicated phenomenon involving nonlinear dynamics at different length and time scales[1, 2]. The microscopic origin of friction is poorly understood, due in part to…
Intermodulation electrostatic force microscopy for imaging surface photo-voltage
Riccardo Borgani, Daniel Forchheimer, Jonas Bergqvist +3
We demonstrate an alternative to Kelvin Probe Force Microscopy for imaging surface potential. The open-loop, single-pass technique applies a low-frequency AC voltage to the atomic…