Pulsed-gate measurements of the singlet-triplet relaxation time in a two-electron double quantum dot

J. R. Petta; A. C. Johnson; A. Yacoby; C. M. Marcus; M. P. Hanson; A. C. Gossard

doi:10.1103/PhysRevB.72.161301

Pulsed-gate measurements of the singlet-triplet relaxation time in a two-electron double quantum dot

J. R. Petta
, A. C. Johnson
, A. Yacoby
, C. M. Marcus
, M. P. Hanson
, A. C. Gossard

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

71 Scopus citations

Abstract

A pulsed-gate technique with charge sensing is used to measure the singlet-triplet relaxation time for nearly degenerate spin states in a two-electron double quantum dot. Transitions from the (1,1) charge occupancy state to the (0,2) state, measured as a function of pulse cycle duration and magnetic field, allow the (1,1) singlet-triplet relaxation time (≥70μs) and the (0,2) singlet-triplet splitting to be measured. This technique can be readily applied to read out a spin-qubit operating in a singlet-triplet basis.

Original language	English (US)
Article number	161301
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.72.161301
State	Published - Oct 15 2005

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.72.161301

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title = "Pulsed-gate measurements of the singlet-triplet relaxation time in a two-electron double quantum dot",

abstract = "A pulsed-gate technique with charge sensing is used to measure the singlet-triplet relaxation time for nearly degenerate spin states in a two-electron double quantum dot. Transitions from the (1,1) charge occupancy state to the (0,2) state, measured as a function of pulse cycle duration and magnetic field, allow the (1,1) singlet-triplet relaxation time (≥70μs) and the (0,2) singlet-triplet splitting to be measured. This technique can be readily applied to read out a spin-qubit operating in a singlet-triplet basis.",

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AU - Petta, J. R.

AU - Johnson, A. C.

AU - Yacoby, A.

AU - Marcus, C. M.

AU - Hanson, M. P.

AU - Gossard, A. C.

PY - 2005/10/15

Y1 - 2005/10/15

N2 - A pulsed-gate technique with charge sensing is used to measure the singlet-triplet relaxation time for nearly degenerate spin states in a two-electron double quantum dot. Transitions from the (1,1) charge occupancy state to the (0,2) state, measured as a function of pulse cycle duration and magnetic field, allow the (1,1) singlet-triplet relaxation time (≥70μs) and the (0,2) singlet-triplet splitting to be measured. This technique can be readily applied to read out a spin-qubit operating in a singlet-triplet basis.

AB - A pulsed-gate technique with charge sensing is used to measure the singlet-triplet relaxation time for nearly degenerate spin states in a two-electron double quantum dot. Transitions from the (1,1) charge occupancy state to the (0,2) state, measured as a function of pulse cycle duration and magnetic field, allow the (1,1) singlet-triplet relaxation time (≥70μs) and the (0,2) singlet-triplet splitting to be measured. This technique can be readily applied to read out a spin-qubit operating in a singlet-triplet basis.

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ER -

Pulsed-gate measurements of the singlet-triplet relaxation time in a two-electron double quantum dot

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