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Quantum Correlations in Two-Fermion Systems
John Schliemann, J. Ignacio Cirac, Marek Kus +2
We characterize and classify quantum correlations in two-fermion systems having 2K single-particle states. For pure states we introduce the Slater decomposition and rank (in analog…
Magnetization in Molecular Iron Rings
B. Normand, X. Wang, X. Zotos +1
The organometallic ring molecules Fe_6 and Fe_10 are leading examples of a class of nanoscopic molecular magnets, which have been of intense recent interest both for their intrinsi…
Quantum Computing in Molecular Magnets
Michael N. Leuenberger, Daniel Loss
Shor and Grover demonstrated that a quantum computer can outperform any classical computer in factoring numbers and in searching a database by exploiting the parallelism of quantum…
Spintronics and Quantum Computing: Switching Mechanisms for Qubits
Michael N. Leuenberger, Daniel Loss
Quantum computing and quantum communication are remarkable examples of new information processing technologies that arise from the coherent manipulation of spins in nanostructures.…
Andreev-Tunneling, Coulomb Blockade, and Resonant Transport of Non-Local Spin-Entangled Electrons
Patrik Recher, Eugene V. Sukhorukov, Daniel Loss
We propose and analyze a spin-entangler for electrons based on an s-wave superconductor coupled to two quantum dots each of which is tunnel-coupled to normal Fermi leads. We show t…
Noise of a Quantum-Dot System in the Cotunneling Regime
Eugene V. Sukhorukov, Guido Burkard, Daniel Loss
We study the noise of the cotunneling current through one or several tunnel-coupled quantum dots in the Coulomb blockade regime. The various regimes of weak and strong, elastic and…