%0 Journal Article %1 ReiTayGos08 %A Reilly, D. J. %A Taylor, J. M. %A Petta, J. R. %A Marcus, C. M. %A Hanson, M. P. %A Gossard, A. C. %D 2008 %J Science %K decoherence, quantum-dots %N 5890 %P 817--821 %R 10.1126/science.1159221 %T Suppressing Spin Qubit Dephasing by Nuclear State Preparation %U http://dx.doi.org/10.1126/science.1159221 %V 321 %X Coherent spin states in semiconductor quantum dots offer promise as electrically controllable quantum bits (qubits) with scalable fabrication. For few-electron quantum dots made from gallium arsenide (GaAs), fluctuating nuclear spins in the host lattice are the dominant source of spin decoherence. We report a method of preparing the nuclear spin environment that suppresses the relevant component of nuclear spin fluctuations below its equilibrium value by a factor of ∼70, extending the inhomogeneous dephasing time for the two-electron spin state beyond 1 microsecond. The nuclear state can be readily prepared by electrical gate manipulation and persists for more than 10 seconds.

@article{ReiTayGos08, abstract = {{Coherent spin states in semiconductor quantum dots offer promise as electrically controllable quantum bits (qubits) with scalable fabrication. For few-electron quantum dots made from gallium arsenide (GaAs), fluctuating nuclear spins in the host lattice are the dominant source of spin decoherence. We report a method of preparing the nuclear spin environment that suppresses the relevant component of nuclear spin fluctuations below its equilibrium value by a factor of ∼70, extending the inhomogeneous dephasing time for the two-electron spin state beyond 1 microsecond. The nuclear state can be readily prepared by electrical gate manipulation and persists for more than 10 seconds.}}, added-at = {2019-02-26T15:22:34.000+0100}, author = {Reilly, D. J. and Taylor, J. M. and Petta, J. R. and Marcus, C. M. and Hanson, M. P. and Gossard, A. C.}, biburl = {https://www.bibsonomy.org/bibtex/25f577bb04e9ce8ff4da28ed691bb7bf7/rspreeuw}, citeulike-article-id = {3116066}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1159221}, citeulike-linkout-1 = {http://www.sciencemag.org/cgi/content/abstract/321/5890/817}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/18687959}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=18687959}, day = 8, doi = {10.1126/science.1159221}, interhash = {0e0e97bdc3082e3a8f3091cf399db108}, intrahash = {5f577bb04e9ce8ff4da28ed691bb7bf7}, journal = {Science}, keywords = {decoherence, quantum-dots}, month = aug, number = 5890, pages = {817--821}, pmid = {18687959}, posted-at = {2008-09-30 16:30:12}, priority = {2}, timestamp = {2019-02-26T15:22:34.000+0100}, title = {{Suppressing Spin Qubit Dephasing by Nuclear State Preparation}}, url = {http://dx.doi.org/10.1126/science.1159221}, volume = 321, year = 2008 }