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Spin‐Based Optical Quantum Information Processing
Author(s) -
Pazy Ehoud
Publication year - 2007
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1560/ijc_46_4_357
Subject(s) - degrees of freedom (physics and chemistry) , quantum computer , spin engineering , quantum mechanics , spin (aerodynamics) , physics , quantum technology , spins , open quantum system , quantum information , quantum error correction , qubit , chemistry , quantum , electron , condensed matter physics , spin polarization , thermodynamics
We shall present a review of semiconductor spin‐based implementation schemes for the realization of quantum information/computation solid‐state devices. After briefly describing the fundamentals of quantum computation theory, we shall introduce and discuss potential implementation schemes based on the spin degrees of freedom in semiconductor nanostructures. More specifically, we shall describe an implementation scheme for quantum information processing in which the spin degrees of freedom of electrons confined to a quantum dot are the computational degrees of freedom, and spins are manipulated/controlled through interaction between trionic states created by interband optical transitions by ultrafast sequences of multicolor laser pulses. We will also review briefly an adiabatic method for operating the two‐qubit gate that avoids the main imperfections present in real quantum dots: exciton decay, hole mixing, and phonon decoherence.