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arXiv · 1204.0024

A superconducting microwave multivibrator produced by coherent feedback

Joseph Kerckhoff·K. W. Lehnert
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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.

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Joseph Kerckhoff, K. W. Lehnert. 2012-09-05. A superconducting microwave multivibrator produced by coherent feedback. https://doi.org/10.1103/physrevlett.109.153602

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