Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Franke, David"'
Quantum computing is on the verge of a transition from fundamental research to practical applications. Yet, to make the step to large-scale quantum computation, an extensible qubit system has to be developed. In classical semiconductor technology, th
Externí odkaz:
http://arxiv.org/abs/1806.02145
Publikováno v:
Phys. Rev. Lett. 118, 246401 (2017)
We study single- and multi-quantum transitions of the nuclear spins of ionized arsenic donors in silicon and find quadrupolar effects on the coherence times, which we link to fluctuating electrical field gradients present after the application of lig
Externí odkaz:
http://arxiv.org/abs/1610.04138
Autor:
Franke, David P., Szech, Michael, Hrubesch, Florian M., Riemann, Helge, Abrosimov, Nikolai V., Becker, Peter, Pohl, Hans-Joachim, Itoh, Kohei M., Thewalt, Michael L. W., Brandt, Martin S.
Publikováno v:
Phys. Rev. B 94, 235201 (2016)
We present Auger-electron-detected magnetic resonance (AEDMR) experiments on phosphorus donors in silicon, where the selective optical generation of donor-bound excitons is used for the electrical detection of the electron spin state. Because of the
Externí odkaz:
http://arxiv.org/abs/1608.02936
Autor:
Franke, David P., Pflüger, Moritz P. D., Mortemousque, Pierre-André, Itoh, Kohei M., Brandt, Martin S.
Publikováno v:
Phys. Rev. B 93, 161303 (2016)
We present electrically detected electron nuclear double resonance measurements of the nuclear spins of ionized and neutral arsenic donors in strained silicon. In addition to a reduction of the hyperfine coupling, we find significant quadrupole inter
Externí odkaz:
http://arxiv.org/abs/1603.01513
Autor:
Zollitsch, Christoph W., Mueller, Kai, Franke, David P., Goennenwein, Sebastian T. B., Brandt, Martin S., Gross, Rudolf, Huebl, Hans
Publikováno v:
Appl. Phys. Lett. 107, 142105 (2015)
We investigate the coupling of an ensemble of phosphorus donors in an isotopically purified $^{28}$Si host lattice interacting with a superconducting coplanar waveguide resonator. The microwave transmission spectrum of the resonator shows a normal mo
Externí odkaz:
http://arxiv.org/abs/1507.03739
Autor:
Franke, David P., Hrubesch, Florian M., Künzl, Markus, Itoh, Kohei M., Stutzmann, Martin, Hoehne, Felix, Dreher, Lukas, Brandt, Martin S.
Publikováno v:
Phys. Rev. Lett. 115, 057601 (2015)
The nuclear spins of ionized donors in silicon have become an interesting quantum resource due to their very long coherence times. Their perfect isolation, however, comes at a price, since the absence of the donor electron makes the nuclear spin diff
Externí odkaz:
http://arxiv.org/abs/1503.00133
Autor:
Franke, David P., Ostuka, Manabu, Matsuoka, Takashi, Vlasenko, Leonid S., Vlasenko, Marina P., Brandt, Martin S., Itoh, Kohei M.
Spin-dependent transport processes in thin near-surface doping regions created by low energy ion implantation of arsenic in silicon are detected by two methods, spin-dependent recombination (SDR) using microwave photoconductivity and electrically det
Externí odkaz:
http://arxiv.org/abs/1407.5534
Publikováno v:
Phys. Rev. B 89, 195207 (2014)
Spin-dependent relaxation and recombination processes in $\gamma$-irradiated $n$-type Czochralski-grown silicon are studied using continuous wave (cw) and pulsed electrically detected magnetic resonance (EDMR). Two processes involving the SL1 center,
Externí odkaz:
http://arxiv.org/abs/1402.5957
Autor:
Hoehne, Felix, Dreher, Lukas, Franke, David P., Stutzmann, Martin, Vlasenko, Leonid S., Itoh, Kohei M., Brandt, Martin S.
In this work, we devise a fast and effective nuclear spin hyperpolarization scheme, which is in principle magnetic field and temperature independent. We use this scheme to experimentally demonstrate polarizations of up to 66% for phosphorus donor nuc
Externí odkaz:
http://arxiv.org/abs/1308.3596