P. Forn-Díaz
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View article: Superconducting penetration depth of aluminum thin films
Superconducting penetration depth of aluminum thin films Open
We present a study of the superconducting penetration depth λ in aluminum thin films of varying thickness. The range of thicknesses chosen spans from the thin-film regime to the regime approaching bulk behavior. The penetration depths obse…
View article: Superinductor-based ultrastrong coupling in a superconducting circuit
Superinductor-based ultrastrong coupling in a superconducting circuit Open
We present an ultrastrong superinductor-based coupling consisting of a flux qubit galvanically coupled to a resonator. The coupling inductor is fabricated in granular Aluminum, a superinductor material able to provide large surface inducta…
View article: Superconducting nitridized-aluminum thin films
Superconducting nitridized-aluminum thin films Open
We report the direct observation of superconductivity in nitridized-aluminum thin films. The films are produced by sputtering deposition of aluminum in a controlled mixture of nitrogen diluted in argon. The concentration of applied nitroge…
View article: Magnetic penetration depth of Aluminum thin films
Magnetic penetration depth of Aluminum thin films Open
We present a study of the superconducting penetration depth $λ$ in aluminum thin films of varying thickness. The range of thicknesses chosen spans from the thin-film regime to the regime approaching bulk behavior. The penetration depths ob…
View article: Superconducting nitridized-aluminum thin films
Superconducting nitridized-aluminum thin films Open
We report the direct observation of superconductivity in nitridized-aluminum thin films. The films are produced by sputtering deposition of aluminum in a controlled mixture of nitrogen diluted in argon. The concentration of applied nitroge…
View article: Transmission spectra of the driven, dissipative Rabi model in the ultrastrong-coupling regime
Transmission spectra of the driven, dissipative Rabi model in the ultrastrong-coupling regime Open
We present theoretical transmission spectra of a strongly driven, damped,\nflux qubit coupled to a dissipative resonator in the ultrastrong coupling\nregime. Such a qubit-oscillator system, described within a dissipative Rabi\nmodel, const…
View article: One qubit as a universal approximant
One qubit as a universal approximant Open
In this repository one can find all the code used to generate the figures in the paper One qubit as a Universal Approximant, arXiv:2102.04032 including the original data sets.
View article: One qubit as a universal approximant
One qubit as a universal approximant Open
In this repository one can find all the code used to generate the figures in the paper One qubit as a Universal Approximant, arXiv:2102.04032 including the original data sets.
View article: Startup Qilimanjaro—towards a European full-stack coherent quantum annealer platform
Startup Qilimanjaro—towards a European full-stack coherent quantum annealer platform Open
Qilimanjaro Quantum Tech is the full-stack quantum spin-off of three research institutions, the Barcelona Supercomputing Center (BSC), the Institute for High Energy Physics (IFAE) and the University of Barcelona (UB). The company addresses…
View article: Observation of Three-Photon Spontaneous Parametric Down-Conversion in a Superconducting Parametric Cavity
Observation of Three-Photon Spontaneous Parametric Down-Conversion in a Superconducting Parametric Cavity Open
Spontaneous parametric downconversion (SPDC) has been a key enabling\ntechnology in exploring quantum phenomena and their applications for decades.\nFor instance, traditional SPDC, which splits a high energy pump photon into two\nlower ene…
View article: Ultrastrong coupling regimes of light-matter interaction
Ultrastrong coupling regimes of light-matter interaction Open
Recent experiments have demonstrated that light and matter can mix together to an extreme degree, and previously uncharted regimes of light-matter interactions are currently being explored in a variety of settings. The so-called ultrastron…
View article: Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity
Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity Open
We demonstrate the generation of multimode entangled states of propagating microwaves. The entangled states are generated by our parametrically pumping a multimode superconducting cavity. By combining different pump frequencies, applied si…
View article: Publisher Correction: Probing the strongly driven spin-boson model in a superconducting quantum circuit
Publisher Correction: Probing the strongly driven spin-boson model in a superconducting quantum circuit Open
The original PDF and HTML versions of this Article omitted the ORCID ID of the authors L. Magazzù and P. Forn-Díaz. (L. Magazzù: 0000-0002-4377-8387; P. Forn-Diaz: 0000-0003-4365-5157). The original PDF version of this Article contained er…
View article: Probing the strongly driven spin-boson model in a superconducting quantum circuit
Probing the strongly driven spin-boson model in a superconducting quantum circuit Open
Quantum two-level systems interacting with the surroundings are ubiquitous in nature. The interaction suppresses quantum coherence and forces the system towards a steady state. Such dissipative processes are captured by the paradigmatic sp…
View article: Two-photon quantum Rabi model with superconducting circuits
Two-photon quantum Rabi model with superconducting circuits Open
We propose a superconducting circuit to implement a two-photon quantum Rabi\nmodel in a solid-state device, where a qubit and a resonator are coupled by a\ntwo-photon interaction. We analyze the input-output relations for this circuit\nin …
View article: On-Demand Microwave Generator of Shaped Single Photons
On-Demand Microwave Generator of Shaped Single Photons Open
We demonstrate the full functionality of a circuit that generates single microwave photons on demand, with a wave packet that can be modulated with a near-arbitrary shape. We achieve such a high tunability by coupling a superconducting qub…
View article: On-demand microwave generator of shaped single photons
On-demand microwave generator of shaped single photons Open
We demonstrate the full functionality of a circuit that generates single microwave photons on demand, with a wave packet that can be modulated with a near-arbitrary shape. We achieve such a high tunability by coupling a superconducting qub…
View article: Correction: Corrigendum: Broken selection rule in the quantum Rabi model
Correction: Corrigendum: Broken selection rule in the quantum Rabi model Open
View article: Ultrastrong coupling of a single artificial atom to an electromagnetic continuum in the nonperturbative regime
Ultrastrong coupling of a single artificial atom to an electromagnetic continuum in the nonperturbative regime Open