C
Cristian Urbina
Researcher at Centre national de la recherche scientifique
Publications - 98
Citations - 9112
Cristian Urbina is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Josephson effect & Superconductivity. The author has an hindex of 39, co-authored 98 publications receiving 8603 citations. Previous affiliations of Cristian Urbina include French Alternative Energies and Atomic Energy Commission & Université Paris-Saclay.
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Journal ArticleDOI
Manipulating the Quantum State of an Electrical Circuit
Denis Vion,Abdelhanin Aassime,Audrey Cottet,Philippe Joyez,Hugues Pothier,Cristian Urbina,Daniel Esteve,Michel Devoret +7 more
TL;DR: A superconducting tunnel junction circuit that behaves as a two-level atom that can be programmed with a series of microwave pulses and a projective measurement of the state can be performed by a pulsed readout subcircuit is designed and operated.
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Rabi oscillations in a large Josephson-junction qubit.
TL;DR: A circuit based on a large-area current-biased Josephson junction whose two lowest energy quantum levels are used to implement a solid-state qubit is designed and operated and is the basis of a scalable quantum computer.
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Electron transport through a metal-molecule-metal junction
Christophe Kergueris,Jean-Philippe Bourgoin,Serge Palacin,Daniel Esteve,Cristian Urbina,M. Magoga,Christian Joachim +6 more
TL;DR: In this article, bisthiolterthiophene has been adsorbed on the two facing gold electrodes of a mechanically controllable break junction in order to form metal-molecule(s)-metal junctions.
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The signature of chemical valence in the electrical conduction through a single-atom contact
Elke Scheer,Nicolás Agraït,Juan Carlos Cuevas,Alfredo Levy Yeyati,Bas Ludoph,A. Martín-Rodero,Gabino Rubio Bollinger,Jan M. van Ruitenbeek,Cristian Urbina +8 more
TL;DR: In this article, it was shown that the chemical valence determines the conduction properties of the simplest imaginable circuit, a one-atom contact between two metallic banks, and that the extended quantum states that carry the current from one bank to the other necessarily proceed through the valence orbitals of the constriction atom.
Journal ArticleDOI
Frequency-locked turnstile device for single electrons
L.J. Geerligs,V.F. Anderegg,P.A.M. Holweg,J.E. Mooij,Hugues Pothier,Daniel Esteve,Cristian Urbina,Michel Devoret +7 more
TL;DR: In this paper, an array of ultrasmall tunnel junctions which acts like a turnstile for single electrons was fabricated, and when alternating voltage of frequency f is applied to a gate, one electron is transferred per cycle through the device.