Pulse-pumped double quantum dot with spin-orbit coupling
نویسندگان
چکیده
منابع مشابه
Pumped double quantum dot with spin-orbit coupling
We study driven by an external electric field quantum orbital and spin dynamics of electron in a one-dimensional double quantum dot with spin-orbit coupling. Two types of external perturbation are considered: a periodic field at the Zeeman frequency and a single half-period pulse. Spin-orbit coupling leads to a nontrivial evolution in the spin and orbital channels and to a strongly spin- depend...
متن کاملWeak localization and conductance fluctuations of a chaotic quantum dot with tunable spin-orbit coupling
In a two-dimensional quantum dot in a GaAs heterostructure, the spin-orbit scattering rate is substantially reduced below the rate in a bulk two-dimensional electron gas @B. I. Halperin et al., Phys. Rev. Lett. 86, 2106 ~2001!#. Such a reduction can be undone if the spin-orbit coupling parameters acquire a spatial dependence, which can be achieved, e.g., by a metal gate covering only a part of ...
متن کاملEvanescent states in quantum wires with Rashba spin-orbit coupling
We discuss the calculation of evanescent states in quasi-one-dimensional quantum wires in the presence of Rashba spin-orbit interaction. We suggest a computational algorithm devised for cases in which longitudinal and transverse motions are coupled. The dispersion relations are given for some selected cases, illustrating the feasibility of the proposed computational method. As a practical appli...
متن کاملKondo-model for quantum-dots with spin-orbit coupling
Cotunneling through a spin-orbit coupled quantum dot Starting from the Anderson model for a quantum dot, with Rashba type spinorbit (SO) interactions, coupled to two metallic electrodes, we derive an effective low-energy Hamiltonian describing the dynamical spin-fluctuations, i.e. the cotunneling processes, which remain in the Coulomb blockade regime. This projection to the low-energy states of...
متن کاملSolid-state spin-photon quantum interface without spin-orbit coupling.
We show that coherent optical manipulation of a single confined spin is possible even in the absence of spin-orbit coupling. To this end, we consider the non-Markovian dynamics of a single valence orbital hole spin that has optically induced spin-exchange coupling to a low-temperature partially polarized electron gas. We show that the fermionic nature of the reservoir induces a coherent compone...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EPL (Europhysics Letters)
سال: 2010
ISSN: 0295-5075,1286-4854
DOI: 10.1209/0295-5075/90/27010