期刊
OPTICS LETTERS
卷 47, 期 16, 页码 4091-4094出版社
Optica Publishing Group
DOI: 10.1364/OL.468108
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Discrete-time photonic quantum walks provide a platform for observing non-Hermitian physical phenomena and controlling light scattering. This study shows that slowly drifting Kramers-Kronig potentials can behave as invisible potentials in discrete-time photonic quantum walks.
Discrete-time photonic quantum walks on a synthetic lattice, where both spatial and temporal evolution of light are discretized, have recently provided a fascinating platform for the observation of a wealth of non-Hermitian physical phenomena and for the control of light scattering in complex media. Arather open question is whether invisible potentials, analogous to the ones known for continuous optical media, do exist in such discretized systems. Here it is shown that, under certain conditions, slowly drifting Kramers-Kronig potentials behave as invisible potentials in discrete-time photonic quantum walks. (C) 2022 Optica Publishing Group
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