Readout scheme of the fullerene-based quantum computer by a single electron transistor

Details Readout scheme of the fullerene-based quantum computer by a single electron transistor Readout scheme of the fullerene-based quantum computer by a single electron transistor

2004-01-26

arxiv.org/abs/quant-ph/0401157v2

Physical Review A 70, 030303(R) (2004)

Physics

Quantum Physics

RevTex, 1 table and two figures. Latest version

Scientific paper

10.1103/PhysRevA.70.030303

The readout of the quantum spin state is a challenge for any spin-based quantum computing implementation. We propose a scheme, based on the achieved technique of single electron transistor (SET), to implement the readout of electronic spin state inside a doped $C_{60}$ fullerene by means of the magnetic dipole-dipole coupling and spin filters. In the presence of an external magnetic field, we show how to perform the spin state detection by transforming the information contained in the spin state into the tunneling current. The robustness of our scheme against sources of error is discussed.

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