Terahertz amplifiers based on gain reflectivity in cuprate superconductors
arXiv:2109.02612 · doi:10.1103/PhysRevResearch.4.013181
Abstract
We demonstrate that parametric driving of suitable collective modes in cuprate superconductors results in a reflectivity for frequencies in the low terahertz regime. We propose to exploit this effect for the amplification of coherent terahertz radiation in a laser-like fashion. As an example, we consider the optical driving of Josephson plasma oscillations in a monolayer cuprate at a frequency that is blue-detuned from the Higgs frequency. Analogously, terahertz radiation can be amplified in a bilayer cuprate by driving a phonon resonance at a frequency slightly higher than the upper Josephson plasma frequency. We show this by simulating a driven-dissipative lattice gauge theory on a three-dimensional lattice, encoding a bilayer structure in the model parameters. We find a parametric amplification of terahertz radiation at zero and nonzero temperature.
11 pages, 8 figures
References in corpus (10)
- Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5
- Amplitude / Higgs Modes in Condensed Matter Physics
- On the electromagnetic properties of active media
- Proposed parametric cooling of bilayer cuprate superconductors by terahertz excitation
- Third harmonic generation from collective modes in disordered superconductors
- Coherent Modulation of the YBa2Cu3O6+x Atomic Structure by Displacive Stimulated Ionic Raman Scattering
- Superconducting THz sources with 12% power efficiency
- Observing light-induced Floquet band gaps in the longitudinal conductivity of graphene
- Transiently enhanced interlayer tunneling in optically driven high superconductors
- Higgs mode mediated enhancement of interlayer transport in high- cuprate superconductors