TITLE

Coherent emission from large arrays of discrete Josephson junctions

AUTHOR(S)
Song, F.; Müller, F.; Behr, R.; Klushin, A. M.
PUB. DATE
October 2009
SOURCE
Applied Physics Letters;10/26/2009, Vol. 95 Issue 17, p172501
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We observed coherent emission at the frequency of 76 GHz from a large-area array of 7500 niobium junctions embedded in the quasioptical resonator at liquid helium temperature. The maximal detected power of 2 μW was measured by a room temperature superheterodyne receiver. To explain the coherent behavior of the array of Josephson junctions, electromagnetic field simulations were performed. Considering the substrate as a dielectric resonator antenna, the coherent emission was excited if the locations of each subarray coincided with the positions of the maximum electric field intensity in the substrate resonance mode.
ACCESSION #
44909882

 

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