26 citations · 30 across the 5 of their papers we have counts for
5 papers
Acoustic scattering singularities via quasi-Bound states in the continuum
Anis Maddi, Mourad Oudich, Aurelien Merkel +2
Non-Hermitian systems enable advanced control of wave propagation by exploiting engineered losses. This introduces an additional degree of freedom that permits the emergence of exc…
Direct experimental observation of total absorption and loss compensation using sound waves with complex frequencies
Anis Maddi, Gaelle Poignand, Vassos Achilleos +2
In this study, we experimentally investigate the application of a transient signal with complex frequencies to the absorption and transmission of sound waves. Indeed, the emission…
A nonreciprocal and tunable active acoustic scatterer
Anis Maddi, Gaelle Poignand, Vassos Achilleos +2
A passive loudspeaker mounted in a duct acts as a reciprocal scatterer for plane waves impinging on either of its sides. However, the reciprocity can be broken by means of an asymm…
Time-resolved measurement of acoustic density fluctuations using a phase-shifting Mach-Zehnder interferometer
Eita Shoji, Anis Maddi, Guillaume Penelet +1
Phase-shifting interferometry is one of the optical measurement techniques that improves accuracy and resolution by incorporating a controlled phase shift into conventional optical…
Exact analogue of the Hatano-Nelson model in 1D continuous nonreciprocal systems
Anis Maddi, Yves Auregan, Guillaume Penelet +2
We propose a general framework that enables the exact mapping of continuous nonreciprocal 1D periodic systems to the Hatano-Nelson (HN) model. Our approach, based on the two-port t…