Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Scheibner, M."'
Publikováno v:
Physical Review D 109, 064073, 2024
We investigate the gravitational Aharonov-Bohm effect, by placing a quantum system in free-fall around a gravitating body {\it e.g.} a satellite orbiting the Earth. Since the system is in free-fall, by the equivalence principle, the quantum system is
Externí odkaz:
http://arxiv.org/abs/2311.07764
Publikováno v:
Physical Review A 107, 042209 (2023)
A novel version of the electric Aharonov-Bohm effect is proposed where the quantum system which picks up the Aharonov-Bohm phase is confined to a Faraday cage with a time varying, spatially uniform scalar potential. The electric and magnetic fields i
Externí odkaz:
http://arxiv.org/abs/2212.03437
Publikováno v:
Phys. Rev. B 102, 085423 (2020)
We report on linewidth analysis of optical transitions in InAs/GaAs coupled quantum dots as a function of bias voltage, temperature, and tunnel coupling strength. A significant line broadening up to 100 $\mu$eV is observed at hole tunneling resonance
Externí odkaz:
http://arxiv.org/abs/2003.02980
Autor:
Garrido, Mauricio, Wijesundara, Kushal C., Ramanathan, Swati, Stinaff, E. A., Scheibner, M., Bracker, A. S., Gammon, D.
Excited states in single quantum dots (QDs) have been shown to be useful for spin state initialization and manipulation. For scalable quantum information processing it is necessary to have multiple spins interacting. Therefore, we present initial res
Externí odkaz:
http://arxiv.org/abs/0901.4772
Autor:
Wijesundara, Kushal C., Garrido, Mauricio, Ramanathan, Swati, Stinaff, E. A., Scheibner, M., Bracker, A. S., Gammon, D.
Spin manipulation in coupled quantum dots is of interest for quantum information applications. Control of the exchange interaction between electrons and holes via an applied electric field may provide a promising technique for such spin control. Pola
Externí odkaz:
http://arxiv.org/abs/0901.4751
Autor:
Doty, M. F., Climente, J. I., Korkusinski, M., Scheibner, M., Bracker, A. S., Hawrylak, P., Gammon, D.
The spin-orbit interaction is a crucial element of many semiconductor spintronic technologies. Here we report the first experimental observation, by magneto-optical spectroscopy, of a remarkable consequence of the spin-orbit interaction for holes con
Externí odkaz:
http://arxiv.org/abs/0804.3097
Autor:
Scheibner, M., Ponomarev, I. V., Stinaff, E. A., Doty, M. F., Bracker, A. S., Hellberg, C. S., Reinecke, T. L., Gammon, D.
Publikováno v:
Phys. Rev. Lett. 99, 197402 (2007)
We present photoluminescence studies of the molecular neutral biexciton-exciton spectra of individual vertically stacked InAs/GaAs quantum dot pairs. We tune either the hole or the electron levels of the two dots into tunneling resonances. The spectr
Externí odkaz:
http://arxiv.org/abs/0705.1205
Autor:
Bracker, A. S., Scheibner, M., Doty, M. F., Stinaff, E. A., Ponomarev, I. V., Kim, J. C., Whitman, L. J., Reinecke, T. L., Gammon, D.
Most self-assembled quantum dot molecules are intrinsically asymmetric with inequivalent dots resulting from imperfect control of crystal growth. We have grown vertically-aligned pairs of InAs/GaAs quantum dots by molecular beam epitaxy, introducing
Externí odkaz:
http://arxiv.org/abs/cond-mat/0609147
Autor:
Doty, M. F., Scheibner, M., Ponomarev, I. V., Stinaff, E. A., Bracker, A. S., Korenev, V. L., Reinecke, T. L., Gammon, D.
We present a magneto-photoluminescence study of individual vertically stacked InAs/GaAs quantum dot pairs separated by thin tunnel barriers. As an applied electric field tunes the relative energies of the two dots, we observe a strong resonant increa
Externí odkaz:
http://arxiv.org/abs/cond-mat/0608198
Autor:
Scheibner, M., Doty, M. F., Ponomarev, I. V., Bracker, A. S., Stinaff, E. A., Korenev, V. L., Reinecke, T. L., Gammon, D.
Publikováno v:
Phys. Rev. B 75, 245318 (2007) (9 pages)
The interaction between spins in coupled quantum dots is revealed in distinct fine structure patterns in the measured optical spectra of InAs/GaAs double quantum dot molecules containing zero, one, or two excess holes. The fine structure is explained
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607241