Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Rashba, Emmanuel I."'
Publikováno v:
Phys. Rev. B 102, 014422 (2020)
The energy vs. crystal momentum E(k) diagram for a solid (band structure) constitutes the road map for navigating its optical, magnetic, and transport properties. By selecting crystals with specific atom types, composition and symmetries, one could d
Externí odkaz:
http://arxiv.org/abs/1912.12689
Autor:
Pal, Arijeet, Nichol, John M., Shulman, Michael D., Harvey, Shannon P., Umansky, Vladimir, Rashba, Emmanuel I., Yacoby, Amir, Halperin, Bertrand I.
Publikováno v:
Phys. Rev. B 95, 035306 (2017)
We present experimental data and associated theory for correlations in a series of experiments involving repeated Landau-Zener sweeps through the crossing point of a singlet state and a spin aligned triplet state in a GaAs double quantum dot containi
Externí odkaz:
http://arxiv.org/abs/1608.03955
Publikováno v:
Phys. Rev. B 92, 125409 (2015) (Editors' Suggestion)
We investigate capacitively coupled two-qubit quantum gates based on quantum dots. For exchange-only coded qubits electron spin $S$ and its projection $S_z$ are exact quantum numbers. Capacitive coupling between qubits, as distinct from interqubit ex
Externí odkaz:
http://arxiv.org/abs/1505.07847
Autor:
Nichol, John M., Harvey, Shannon P., Shulman, Michael D., Pal, Arijeet, Umansky, Vladimir, Rashba, Emmanuel I., Halperin, Bertrand I., Yacoby, Amir
The central-spin problem, in which an electron spin interacts with a nuclear spin bath, is a widely studied model of quantum decoherence. Dynamic nuclear polarization (DNP) occurs in central spin systems when electronic angular momentum is transferre
Externí odkaz:
http://arxiv.org/abs/1502.05400
Autor:
Brataas, Arne, Rashba, Emmanuel I.
We consider, in the framework of the central spin $s=1/2$ model, driven dynamics of two electrons in a double quantum dot subject to hyperfine interaction with nuclear spins and spin-orbit coupling. The nuclear subsystem dynamically evolves in respon
Externí odkaz:
http://arxiv.org/abs/1310.7847
Publikováno v:
Phys. Rev. X 4, 011012 (2014)
Inspired by creation of a fast exchange-only qubit (Medford et al., Phys. Rev. Lett., 111, 050501 (2013)), we develop a theory describing the nonlinear dynamics of two such qubits that are capacitively coupled, when one of them is driven resonantly a
Externí odkaz:
http://arxiv.org/abs/1307.5075
Publikováno v:
Phys. Rev. B 88, 075115 (2013)
We extend the Fermi-liquid (FL) theory to include spin-orbit (SO) splitting of the energy bands, focusing on the Rashba SO coupling as an example. We construct the phenomenological Landau interaction function for such a system using the symmetry argu
Externí odkaz:
http://arxiv.org/abs/1306.1165
Autor:
Rashba, Emmanuel I.
Recent progress in experimental studies of low-dimensional systems with strong spin-orbit coupling poses a question on the effect of this coupling on the energy spectrum of electrons in semiconductor nanostructures. It is shown in the paper that this
Externí odkaz:
http://arxiv.org/abs/1209.0828
Autor:
Brataas, Arne, Rashba, Emmanuel I.
Publikováno v:
Phys. Rev. Lett. 109, 236803 (2012)
Nuclear spin polarization can be pumped into spin-blocked quantum dots by multiple Landau- Zener passages through singlet-triplet anticrossings. By numerical simulations of realistic systems including approximately $10^7$ nuclear spins during $10^5$
Externí odkaz:
http://arxiv.org/abs/1206.0100
Autor:
Rashba, Emmanuel I.
Publikováno v:
Phys. Rev. B 84, 421305(R) (2011)
Electron dynamics in quantum dots manifests itself in spin-flip spectra through electric dipole spin resonance (EDSR). Near a neutrality point separating two different singlet charged states of a double quantum dot, charge dynamics inside a $2\times2
Externí odkaz:
http://arxiv.org/abs/1110.6569