Self-oscillations in a superconducting stripline resonator integrated with a DC-SQUID

Details Self-oscillations in a superconducting stripline resonator integrated with a DC-SQUID Self-oscillations in a superconducting stripline resonator integrated with a DC-SQUID

2009-07-19

arxiv.org/abs/0907.3267v1

Physics

Condensed Matter

Superconductivity

Scientific paper

We study self-sustained oscillations (SO) in a Nb superconducting stripline resonators (SSR) integrated with a DC superconducting quantum interface devices (SQUID). We find that both the power threshold where these oscillations start and the oscillations frequency are periodic in the applied magnetic flux threading the SQUID loop. A theoretical model which attributes the SO to a thermal instability in the DC-SQUID yields a good agreement with the experimental results. This flux dependant nonlinearity may be used for quantum state reading of a qubit-SSR integrated device.

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