Searched for: author%3A%22Braakman%2C+F.R.%22
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Stano, P. (author), Klinovaja, J. (author), Braakman, F.R. (author), Vandersypen, L.M.K. (author), Loss, D. (author)
We investigate theoretically the long-distance coupling and spin exchange in an array of quantum dot spin qubits in the presence of microwaves. We find that photon-assisted cotunneling is boosted at resonances between photon and energies of virtually occupied excited states and show how to make it spin selective. We identify configurations that...
journal article 2015
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Braakman, F.R. (author), Danon, J. (author), Schreiber, L.R. (author), Wegscheider, W. (author), Vandersypen, L.M.K. (author)
We present time-resolved measurements of spin-flip photon-assisted tunneling and spin-flip relaxation in a doubly occupied double quantum dot. The photon-assisted excitation rate as a function of magnetic field indicates that spin-orbit coupling is the dominant mechanism behind the spin-flip under the present conditions. We are able to extract...
journal article 2014
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Braakman, F.R. (author)
The coherent coupling of electron charges and spins is investigated in small quantum dot arrays.
doctoral thesis 2013
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Braakman, F.R. (author), Barthelemy, P. (author), Reichl, C. (author), Wegscheider, W. (author), Vandersypen, L.M.K. (author)
We report both photon- and phonon-assisted tunneling transitions in a linear array of three quantum dots, which can only be understood by considering the full three-dimensionality of the charge stability diagram. Such tunneling transitions potentially contribute to leakage of qubits defined in this system. A detailed understanding of these...
journal article 2013
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Driessen, E.F.C. (author), Braakman, F.R. (author), Reiger, E.M. (author), Dorenbos, S.N. (author), Zwiller, V. (author), De Dood, M.J.A. (author)
We measured the single-photon detection efficiency of NbN superconducting single-photon detectors as a function of the polarization state of the incident light for different wavelengths in the range from 488 nm to 1550 nm. The polarization contrast varies from ?5% at 488 nm to ?30% at 1550 nm, in good agreement with numerical calculations. We...
journal article 2009
Searched for: author%3A%22Braakman%2C+F.R.%22
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