A superconducting microwave multivibrator produced by coherent feedback
arXiv:1204.0024 · doi:10.1103/PhysRevLett.109.153602
Abstract
We investigate a coherent nonlinear feedback circuit constructed from pre-existing superconducting microwave devices. The network exhibits emergent bistable and astable states, and we demonstrate its operation as a latch and the frequency locking of its oscillations. While the network is tedious to model by hand, our observations agree quite well with the semiclassical dynamical model produced by a new software package [N. Tezak et al., arXiv:1111.3081v1] that systematically interpreted an idealized schematic of the system as a quantum optic feedback network.
9 double-spaced pages, 5 figures and supplement. To appear in Phys. Rev. Lett
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