Frequency Comb Generation in Superconducting Resonators

被引:29
作者
Erickson, R. P. [1 ]
Vissers, M. R. [1 ]
Sandberg, M. [1 ]
Jefferts, S. R. [1 ]
Pappas, D. P. [1 ]
机构
[1] Natl Inst Stand & Technol, Boulder, CO 80305 USA
关键词
BAND;
D O I
10.1103/PhysRevLett.113.187002
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have generated frequency combs spanning 0.5 to 20 GHz in superconducting lambda/2 resonators at T = 3 K. Thin films of niobium-titanium nitride enabled this development due to their low loss, high nonlinearity, low frequency dispersion, and high critical temperature. The combs nucleate as sidebands around multiples of the pump frequency. Selection rules for the allowed frequency emission are calculated using perturbation theory, and the measured spectrum is shown to agree with the theory. Sideband spacing is measured to be accurate to 1 part in 10(8). The sidebands coalesce into a continuous comb structure observed to cover at least several frequency octaves.
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页数:5
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