Abstract
We have embedded a voltage-biased Cooper-pair transistor (CPT) in a high- superconducting microwave cavity. When the energy given to a tunneling Cooper pair by the voltage bias is equal to a multiple of the cavity photon frequency, the cavity is pumped to a strongly nonequilibrium state. The cavity photons act back on the CPT, allowing us to enter a regime of strongly correlated electronic-photonic transport. We directly observe the effects of photonic backaction on Cooper-pair transport, and see clear evidence for single-emitter lasing in the form of emission dominated by stimulated transport processes.
- Received 21 February 2014
- Revised 26 June 2014
DOI:https://doi.org/10.1103/PhysRevB.90.020506
©2014 American Physical Society
Synopsis
A Cooper-Pair Laser
Published 22 July 2014
A superconducting transistor embedded in a microcavity acts like a single-emitter laser that could be used to generate nonclassical light.
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