Physics – Quantum Physics
Scientific paper
2008-09-17
Phys. Rev. Lett. 103, 067201 (2009)
Physics
Quantum Physics
4 pages, retex4; v2: published version, improved and compactified presentation
Scientific paper
We describe a method to engineer giant nonlinearities in, and probes to measure nonlinear observables of, mesoscopic quantum resonators. This involves tailoring the Hamiltonian of a simple auxiliary system perturbatively coupled to the resonator, and has the potential to engineer a wide range of nonlinearities to high accuracy. We give a number of explicit examples, including a readily realizable two-qubit auxiliary system that creates an x^4 potential and a Chi^(3) (Kerr) nonlinearity, valid to fifth-order in the perturbative coupling.
Jacobs Kurt
Landahl Andrew
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