Quantum computer

H - Electricity – 03 – K

Patent

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Details

H03K 19/08 (2006.01) G01R 33/20 (2006.01) G06F 7/00 (2006.01) H01L 29/76 (2006.01)

Patent

CA 2304185

A quantum computer comprising a semiconductor substrate into which donor atoms are introduced to produce an array of donor nuclear spin electron systems having large electron wave functions at the nucleus of the donor atoms, where the donor electrons only occupy the nondegenerate lowest spin energy level. An insulating layer above the substrate. Conducting A-gates on the insulating layer above respective donor atoms to control strength of the hyperfine interactions between the donated electrons and the donor atoms' nuclear spins, and hence the resonance frequency of the nuclear spins of the donor atoms. Conducting J-gates on the insulating layer between the A-gates to turn on and off electron mediated coupling between the nuclear spins or adjacent donor atoms. Where the nuclear spins of the donor atoms are the quantum states or "qubits" in which binary information is stored and manipulated by selective application of voltage to the A- and J-gates and selective application of an alternating magnetic field to the substrate.

Ordinateur quantique comprenant un substrat à semi-conducteur, dans lequel on introduit des atomes donneurs afin de produire un réseau de systèmes d'électrons à spin nucléaire de donneur ayant des fonctions d'ondes électroniques amples au niveau du noyau des atomes donneurs, ceux-ci n'occupant que le niveau énergétique non dégénéré ayant le spin le plus bas; une couche isolante disposée au-dessus du substrat; des portes conductrices A, disposées sur la couche isolante au-dessus des atomes donneurs correspondants, qui commandent la force des interactions hyperfines entre les électrons cédés et le spin des atomes donneurs, et donc la fréquence de résonance des spins nucléaires des atomes donneurs; et des portes conductrices J, disposées sur la couche isolante entre les portes A, qui permettent de réaliser ou d'interrompre le couplage créé par les électrons entre les spins nucléaires des atomes donneurs adjacents. Les spins nucléaires des atomes donneurs sont les états quantiques, ou "qubits", dans lesquels les informations binaires sont mises en mémoire et manipulées par l'application sélective d'une tension aux portes A et J et d'un champ magnétique alternatif au substrat.

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