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Superconductor coupled to two Luttinger liquids as an entangler for electron spins
Patrik Recher, Daniel Loss
We consider an s-wave superconductor (SC) which is tunnel-coupled to two spatially separated Luttinger liquid (LL) leads. We demonstrate that such a setup acts as an entangler, i.e…
Entanglement and Quantum Gate Operations with Spin-Qubits in Quantum Dots
John Schliemann, Daniel Loss
We give an elementary introduction to the notion of quantum entanglement between distinguishable parties and review a recent proposal about solid state quantum computation with spi…
Single Spin Dynamics and Decoherence in a Quantum Dot via Charge Transport
Hans-Andreas Engel, Daniel Loss
We investigate the spin dynamics of a quantum dot with a spin-1/2 ground state in the Coulomb blockade regime and in the presence of a magnetic rf field leading to electron spin re…
Kondo effect and singlet-triplet splitting in coupled quantum dots in a magnetic field
Vitaly N. Golovach, Daniel Loss
We study two tunnel-coupled quantum dots each with a spin 1/2 and attached to leads in the Coulomb blockade regime. We study the interplay between Kondo correlations and the single…
Biexcitons in Coupled Quantum Dots as a Source of Entangled Photons
Oliver Gywat, Guido Burkard, Daniel Loss
We study biexcitonic states in two tunnel-coupled semiconductor quantum dots and show that such systems provide the possibility to produce polarization- entangled photons or spin-e…
Cancellation of Spin-Orbit Effects in Quantum Gates Based on the Exchange Coupling in Quantum Dots
Guido Burkard, Daniel Loss
We study the effect of the spin-orbit interaction on quantum gate operations based on the spin exchange coupling where the qubit is represented by the electron spin in a quantum do…