6 papers
Exceeding the Classical Time-bandwidth Product in Nonlinear Time-invariant Systems
Alireza Mojahed, Kosmas L. Tsakmakidis, Lawrence A. Bergman +1
The classical 'time-bandwidth' limit for linear time-invariant (LTI) devices asserts that it is impossible to store broadband waves (large Δω's) for long times (large Δt's). For st…
Three-Dimensional Invisibility to Superscattering Induced by Zeeman-Split Modes
Grigorios P. Zouros, Georgios D. Kolezas, Evangelos Almpanis +1
We report that the fundamental three-dimensional (3-D) scattering single-channel limit can be overcome in magneto-optical assisted systems by inducing nondegenerate magnetoplasmoni…
Comment on "Nonreciprocal cavities and the time-bandwidth limit"
Kosmas L. Tsakmakidis, Yun You, Tomasz Stefanski +1
In their paper in Optica 6, 104 (2019), Mann et al. claim that linear, time-invariant nonreciprocal structures cannot overcome the time-bandwidth limit, and do not exhibit an advan…
High-efficiency triple-resonant inelastic light scattering in planar optomagnonic cavities
Petros Andreas Pantazopoulos, Kosmas L. Tsakmakidis, Evangelos Almpanis +2
Optomagnonic cavities have recently been emerging as promising candidates for implementing coherent microwave-to-optical conversion, quantum memories and devices, and next generati…
A nonreciprocal optical resonator with broken time-invariance for arbitrarily high time-bandwidth performance
Ivan Cardea, Davide Grassani, Simon J. Fabbri +6
Most present-day resonant systems, throughout physics and engineering, are characterized by a strict time-reversal symmetry between the rates of energy coupled in and out of the sy…
Plasmonic Nanolasers Without Cavity, Threshold and Diffraction Limit using Stopped Light
Kosmas L. Tsakmakidis, Joachim M. Hamm, Tim W. Pickering +1
We present a plasmonic waveguide where light pulses are stopped at well-accessed complex-frequency zero-group-velocity points. Introducing gain at such points results in cavity-fre…