329 citations · 796 across the 12 of their papers we have counts for
12 papers
Quantum collective motion of macroscopic mechanical oscillators
Mahdi Chegnizadeh, Marco Scigliuzzo, Amir Youssefi +3
Collective phenomena arise from interactions within complex systems, leading to behaviors absent in individual components. Observing quantum collective phenomena with macroscopic m…
Mechanically Induced Correlated Errors on Superconducting Qubits with Relaxation Times Exceeding 0.4 Milliseconds
Shingo Kono, Jiahe Pan, Mahdi Chegnizadeh +4
Superconducting qubits are one of the most advanced candidates to realize scalable and fault-tolerant quantum computing. Despite recent significant advancements in the qubit lifeti…
Mitigation of frequency collisions in superconducting quantum processors
Amr Osman, Jorge Fernàndez-Pendàs, Christopher Warren +6
The reproducibility of qubit parameters is a challenge for scaling up superconducting quantum processors. Signal crosstalk imposes constraints on the frequency separation between n…
Engineering symmetry-selective couplings of a superconducting artificial molecule to microwave waveguides
Mohammed Ali Aamir, Claudia Castillo Moreno, Simon Sundelin +6
Tailoring the decay rate of structured quantum emitters into their environment opens new avenues for nonlinear quantum optics, collective phenomena, and quantum communications. Her…
Robust preparation of Wigner-negative states with optimized SNAP-displacement sequences
Marina Kudra, Mikael Kervinen, Ingrid Strandberg +13
Hosting non-classical states of light in three-dimensional microwave cavities has emerged as a promising paradigm for continuous-variable quantum information processing. Here we ex…
Extensible quantum simulation architecture based on atom-photon bound states in an array of high-impedance resonators
Marco Scigliuzzo, Giuseppe Calajò, Francesco Ciccarello +7
Engineering the electromagnetic environment of a quantum emitter gives rise to a plethora of exotic light-matter interactions. In particular, photonic lattices can seed long-lived…
Quantum efficiency, purity and stability of a tunable, narrowband microwave single-photon source
Yong Lu, Andreas Bengtsson, Jonathan J. Burnett +7
We demonstrate an on-demand source of microwave single photons with 71--99\% intrinsic quantum efficiency. The source is narrowband (300\unite{kHz}) and tuneable over a 600 MHz ran…
Simplified Josephson-junction fabrication process for reproducibly high-performance superconducting qubits
A. Osman, J. Simon, A. Bengtsson +6
We introduce a simplified fabrication technique for Josephson junctions and demonstrate superconducting Xmon qubits with relaxation times averaging above 50s (1.5$\ti…
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…
Primary thermometry of propagating microwaves in the quantum regime
Marco Scigliuzzo, Andreas Bengtsson, Jean-Claude Besse +3
The ability to control and measure the temperature of propagating microwave modes down to very low temperatures is indispensable for quantum information processing, and may open op…
Phononic loss in superconducting resonators on piezoelectric substrates
Marco Scigliuzzo, Laure E. Bruhat, Andreas Bengtsson +3
We numerically and experimentally investigate the phononic loss for superconducting resonators fabricated on a piezoelectric substrate. With the help of finite element method simul…
Decoherence benchmarking of superconducting qubits
Jonathan Burnett, Andreas Bengtsson, Marco Scigliuzzo +4
We benchmark the decoherence of superconducting qubits to examine the temporal stability of energy-relaxation and dephasing. By collecting statistics during measurements spanning m…