Superconductor Acts as Phonon Generator and Detector
APR 01, 1967
DOI: 10.1063/1.3034266
If you excite quasi‐particles in a superconductor, you can generate and detect phonons. Aly Dayem and Wolfgang Eisenmenger, who reported their work in the 23 Jan. issue of Phys. Rev. Letters, have built such a quantum generator and detector of phonons at 300 GHz. The same technique can be used over a large frequency range where conventional generators and detectors become prohibitively difficult. Until now phonons have been generated only piezoelectrically and at much lower frequencies.
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© 1967 American Institute of Physics
