Single-shot readout of electron spin states in a quantum dot using spin-dependent tunnel rates

Simple item page
dc.creatorHanson, R.
dc.creatorvan Beveren, L. H. Willems
dc.creatorVink, I. T.
dc.creatorElzerman, J. M.
dc.creatorNaber, W. J. M.
dc.creatorKoppens, F. H. L.
dc.creatorKouwenhoven, L. P.
dc.creatorVandersypen, L. M. K.
dc.date2004-12-31
dc.date2005-05-18
dc.date.accessioned2026-07-07T03:02:59Z
dc.date.available2026-07-07T03:02:59Z
dc.descriptionWe present a method for reading out the spin state of electrons in a quantum dot that is robust against charge noise and can be used even when the electron temperature exceeds the energy splitting between the states. The spin states are first correlated to different charge states using a spin dependence of the tunnel rates. A subsequent fast measurement of the charge on the dot then reveals the original spin state. We experimentally demonstrate the method by performing read-out of the two-electron spin states, achieving a single-shot visibility of more than 80%. We find very long triplet-to-singlet relaxation times (up to several milliseconds), with a strong dependence on in-plane magnetic field.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0412768
dc.identifierhttp://arxiv.org/abs/cond-mat/0412768
dc.identifierPhys. Rev. Lett. 94, 196802 (2005)
dc.identifierdoi:10.1103/PhysRevLett.94.196802
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25599
dc.subjectMesoscale and Nanoscale Physics
dc.titleSingle-shot readout of electron spin states in a quantum dot using spin-dependent tunnel rates
dc.typetext

Files

Collections

arXiv