Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Xavier Jehl

Maud Vinet

Louis Hutin

Romain Wacquez

Rodolphe Heliot

Marc Sanquer

A quantum device with spin qubits, comprising:

Quantum device with spin qubits coupled in modulatable manner

Quantum device comprising: and wherein a width of the first lateral spacers is greater than that of the second lateral spacers.

Quantum device comprising FET transistors and qubits co-integrated on the same substrate

A digital-to-analogue converter, with application to electronic circuits with neuromorphic architecture, comprises: transistors of identical nominal geometrical characteristics, but of dispersed current-voltage characteristics, wherein when a constant gate-source voltage is applied to the different transistors, a current varying as a function of the dispersion circulates in the transistor; a digital table receiving a digital word and having a selection output selecting, as a function of the word to be converted, a transistor or transistors supplying a current of desired value representing this word in analogue form. The look-up table is loaded as a function of real measured current-voltage characteristics of different transistors of the set, to establish a look-up between words and current values. The wide variability of characteristics of the transistors, notably their leakage current for a gate-source voltage below the switch-on threshold, allows finding combinations of leakage currents which are a good representation of words to be converted.

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Noyarey, France

Xavier Jehl