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Electron Bunching in Stacks of Coupled Quantum Dots
Rafael Sánchez, Sigmund Kohler, Peter Hänggi +1
We study the transport properties of two double quantum dots in a parallel arrangement at temperatures of a few Kelvin. Thereby, we show that decoherence entailed by the substrate…
Entanglement creation in circuit QED via Landau-Zener sweeps
Martijn Wubs, Sigmund Kohler, Peter Hanggi
A qubit may undergo Landau-Zener transitions due to its coupling to one or several quantum harmonic oscillators. We show that for a qubit coupled to one oscillator, Landau-Zener tr…
Dissipative Landau-Zener transitions of a qubit: bath-specific and universal behavior
Keiji Saito, Martijn Wubs, Sigmund Kohler +2
We study Landau-Zener transitions in a qubit coupled to a bath at zero temperature. A general formula is derived that is applicable to models with a non-degenerate ground state. We…
Incomplete pure dephasing of N-qubit entangled W states
Roland Doll, Martijn Wubs, Peter Hanggi +1
We consider qubits in a linear arrangement coupled to a bosonic field which acts as a quantum heat bath and causes decoherence. By taking the spatial separation of the qubits expli…