CEA
CNRS
Univ. Paris-Saclay

Service de Physique de l'Etat Condensé

Protecting quantum superpositions in superconducting circuits.
Michel Devoret
Applied Physics, Yale University, USA
Jeudi 29/06/2017, 11:00-12:00
SPEC Salle Itzykson, Bât.774, Orme des Merisiers

Abstract: Can we prolong the coherence of a two-state manifold in a complex quantum system beyond the coherence of its longest-lived component? This question is the starting point in the construction of a scalable quantum computer. It translates in the search for processes that operate as some sort of Maxwell’s demon, reliably correcting the errors resulting from the coupling between qubits and their environment. The presentation will review recent experiments that tested the dynamical protection, by Josephson circuits, of a logical qubit memory based on superpositions of particular coherent states of a superconducting resonator.

 

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