Coherent anharmonicity transfer from matter to light in the THz regime

• DOI: 10.48550/arxiv.2309.12216
• Publication Date: 2023-01-01
• Authors: Mauricio Arias; Johan F. Triana; A. Delgado; Felipe Herrera
• Keywords: Quantum Physics; 0303 health sciences; coherent transfer; Science; Physics; QC1-999; Q; FOS: Physical sciences; 7. Clean energy; 03 medical and health sciences; quantum wells; cavity-QED; light–matter interaction; Quantum Physics (quant-ph); non-linear phase; Physics - Optics; Optics (physics.optics)

Optical nonlinearities are fundamental in several types of optical information processing protocols. However, the high laser intensities needed for implementing phase using conventional materials represent a challenge nonlinear optics few-photon regime. We introduce an infrared cavity quantum electrodynamics (QED) approach imprinting shifts on individual THz pulses reflection setups, conditional input power. Power-dependent order $ 0.1\, \pi$ can be achieved with femtosecond only few $\mu$W The proposed scheme involves small number intersubband well transition dipoles evanescently coupled to near field resonator. evolution is due dynamical transfer spectral anharmonicity from material vacuum, through effective dipolar chirping mechanism that transiently detunes transitions vacuum field, leading photon blockade. develop analytical theory describes dependence imprinted shift relevant physical parameters. For pair dipoles, control shown robust respect inhomogeneities dipole frequencies and relaxation rates. Numerical results based Lindblad master equation validate regime where populated up second excitation manifold. In contrast QED schemes require strong light-matter interaction, nonlinearity works best weak coupling, increasing prospects its experimental realization current nanophotonic technology.