Abstract
We theoretically demonstrate significant enhancement of two-photon amplification by using a superconductor for both a Cooper-pair source and surface plasmon-polariton mode guiding. Cooper-pair-based gain active region restriction to the superconductor-semiconductor interface limits its potentially highly efficient two-photon gain process. Using the superconductor layer for a plasmonic waveguide structure allows strong photon confinement while reducing design and fabrication constraints. This results in three orders of magnitude enhancement of the superconducting two-photon gain (TPG) compared to superconductor-based dielectric waveguides. Moreover, a superconducting TPG produced by a plasmonic waveguide increases with carrier concentration, meeting practical device requirements. Our results pave the way for efficient two-photon amplification realization in nanoscale devices.
Original language | English |
---|---|
Pages (from-to) | 2062-2065 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 45 |
Issue number | 7 |
DOIs | |
State | Published - 1 Apr 2020 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics