Spin-based quantum computation in multielectron quantum dots

Details Spin-based quantum computation in multielectron quantum dots Spin-based quantum computation in multielectron quantum dots

2001-01-08

arxiv.org/abs/cond-mat/0101102v2

Phys. Rev. A {\bf 64}, 042312 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 2-column pages in RevTeX

Scientific paper

10.1103/PhysRevA.64.042312

In a quantum computer the hardware and software are intrinsically connected because the quantum Hamiltonian (or more precisely its time development) is the code that runs the computer. We demonstrate this subtle and crucial relationship by considering the example of electron-spin-based solid state quantum computer in semiconductor quantum dots. We show that multielectron quantum dots with one valence electron in the outermost shell do not behave simply as an effective single spin system unless special conditions are satisfied. Our work compellingly demonstrates that a delicate synergy between theory and experiment (between software and hardware) is essential for constructing a quantum computer.

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