33 citations · 149 across the 16 of their papers we have counts for
4 papers · 1 filter
Bistable soliton switching dynamics in a -symmetric coupler with saturable nonlinearity
Ambaresh Sahoo, Dipti Kanika Mahato, A. Govindarajan +1
We investigate the switching dynamics in a -symmetric fiber coupler composed of a saturable nonlinear material as the core. In such a saturable nonlinear medium, bist…
Switching dynamics of femtosecond solitons in parity-time-symmetric coupled optical waveguides
Ambaresh Sahoo, Dipti Kanika Mahato, A. Govindarajan +1
We report a detailed study on soliton steering dynamics in a parity-time-symmetric directional coupler in the femtosecond domain, which requires incorporation of higher-order pertu…
Free-carrier-induced nonlinear dynamics in hybrid graphene-based photonic waveguides
Ambaresh Sahoo, Andrea Marini, Samudra Roy
We develop from first principles a theoretical model for infrared pulse propagation in graphene-covered hybrid waveguides. We model electron dynamics in graphene by Bloch equations…
Ground-State Cooling of a Mechanical Oscillator via a Hybrid Electro-Optomechanical System
Roson Nongthombam, Ambaresh Sahoo, Amarendra K. Sarma
We present a scheme for ground-state cooling of a mechanical resonator by simultaneously coupling it to a superconducting qubit and a cavity field. The Hamiltonian describing the h…