Spin qubit quantum computer
Proposed semiconductor implementation of quantum computers / From Wikipedia, the free encyclopedia
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The spin qubit quantum computer is a quantum computer based on controlling the spin of charge carriers (electrons and electron holes) in semiconductor devices.[1] The first spin qubit quantum computer was first proposed by Daniel Loss and David P. DiVincenzo in 1997,[1][2] also known as the Loss–DiVincenzo quantum computer.[citation needed] The proposal was to use the intrinsic spin-½ degree of freedom of individual electrons confined in quantum dots as qubits. This should not be confused with other proposals that use the nuclear spin as qubit, like the Kane quantum computer or the nuclear magnetic resonance quantum computer. Intel has developed quantum computers based on silicon spin qubits, also called hot qubits.[3][4][5]
Spin qubits so far have been implemented by locally depleting two-dimensional electron gases in semiconductors such a gallium arsenide,[6][7] silicon[8] and germanium.[9] Spin qubits have also been implemented in graphene.[10]