The delocalization transition in the Anderson model in the presence of an imaginary gauge field is a landmark example of non-Hermitian topological phase transition. Originally proposed by Hatano and Nelson, its topological nature has been disclosed only very recently. Here it shown that a non-Hermitian phase transition can be observed in the frequency domain of an actively mode-locked laser in a parity-time (PT)-symmetric configuration with incommensurate spacing of cavity axial frequencies.
Non-Hermitian topological phase transition in PT -symmetric mode-locked lasers
Longhi S.
2019-01-01
Abstract
The delocalization transition in the Anderson model in the presence of an imaginary gauge field is a landmark example of non-Hermitian topological phase transition. Originally proposed by Hatano and Nelson, its topological nature has been disclosed only very recently. Here it shown that a non-Hermitian phase transition can be observed in the frequency domain of an actively mode-locked laser in a parity-time (PT)-symmetric configuration with incommensurate spacing of cavity axial frequencies.File in questo prodotto:
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