Measurement efficiency and n-shot readout of spin qubits

Hans Andreas Engel; Vitaly N. Golovach; Daniel Loss; L. M.K. Vandersypen; J. M. Elzerman; R. Hanson; L. P. Kouwenhoven

doi:10.1103/PhysRevLett.93.106804

Measurement efficiency and n-shot readout of spin qubits

Hans Andreas Engel^*
, Vitaly N. Golovach
, Daniel Loss
, L. M.K. Vandersypen
, J. M. Elzerman
, R. Hanson
, L. P. Kouwenhoven

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

58 Scopus citations

Abstract

The electron spin qubits in quantum dots and a measurement efficiency e to characterize reliable measurements via n-shot readouts was discussed. Various implementations were proposed based on a double dot and a quantum point contact (QPC). It was found that the associated efficiencies e varied between 50% to 100% allowing single-shot readout in the QPC. The results show that the QPC currents allowed spin readout under realistic conditions.

Original language	English
Article number	106804
Pages (from-to)	106804-1-106804-4
Journal	Physical Review Letters
Volume	93
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.93.106804
State	Published - 3 Sep 2004
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.93.106804

Cite this

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title = "Measurement efficiency and n-shot readout of spin qubits",

abstract = "The electron spin qubits in quantum dots and a measurement efficiency e to characterize reliable measurements via n-shot readouts was discussed. Various implementations were proposed based on a double dot and a quantum point contact (QPC). It was found that the associated efficiencies e varied between 50\% to 100\% allowing single-shot readout in the QPC. The results show that the QPC currents allowed spin readout under realistic conditions.",

author = "Engel, \{Hans Andreas\} and Golovach, \{Vitaly N.\} and Daniel Loss and Vandersypen, \{L. M.K.\} and Elzerman, \{J. M.\} and R. Hanson and Kouwenhoven, \{L. P.\}",

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AU - Golovach, Vitaly N.

AU - Loss, Daniel

AU - Vandersypen, L. M.K.

AU - Elzerman, J. M.

AU - Hanson, R.

AU - Kouwenhoven, L. P.

PY - 2004/9/3

Y1 - 2004/9/3

N2 - The electron spin qubits in quantum dots and a measurement efficiency e to characterize reliable measurements via n-shot readouts was discussed. Various implementations were proposed based on a double dot and a quantum point contact (QPC). It was found that the associated efficiencies e varied between 50% to 100% allowing single-shot readout in the QPC. The results show that the QPC currents allowed spin readout under realistic conditions.

AB - The electron spin qubits in quantum dots and a measurement efficiency e to characterize reliable measurements via n-shot readouts was discussed. Various implementations were proposed based on a double dot and a quantum point contact (QPC). It was found that the associated efficiencies e varied between 50% to 100% allowing single-shot readout in the QPC. The results show that the QPC currents allowed spin readout under realistic conditions.

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Measurement efficiency and n-shot readout of spin qubits

Abstract

ASJC Scopus subject areas

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