title: Proposal for a quantum magnetic RC circuit.
abstract: We propose a setup that is the spin analog of the charge-based quantum RC circuit. We define and compute the spin capacitance and the spin resistance of the circuit for both ferromagnetic and antiferromagnetic systems. We find that the antiferromagnetic setup has universal properties, but the ferromagnetic setup does not. We discuss how to use the proposed setup as a quantum source of spin excitations, and put forward two possible experimental realizations, using either ultracold atoms in optical lattices or artificially engineered atomic-spin chains.
authors.affiliation: Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland.
authors.forename: Kevin A
authors.initials: KA
authors.lastname: van Hoogdalem
authors.affiliation: Laboratoire de Physique des Solides, CNRS, Université Paris-Sud, 91405 Orsay, France.
authors.forename: Mathias
authors.initials: M
authors.lastname: Albert
authors.affiliation: Laboratoire de Physique des Solides, CNRS, Université Paris-Sud, 91405 Orsay, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Simon
authors.affiliation: Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland.
authors.forename: Daniel
authors.initials: D
authors.lastname: Loss