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physics.optics2022★ 2 cited
Comment on "Amplified emission and lasing in photonic time crystals"
Jagang Park, Hee Chul Park, Kyungmin Lee +5
Lyubarov et al. (Research Articles, 22 July 2022, p. 425) claim that the spontaneous emission rate of an atom vanishes at the momentum gap edges of photonic Floquet media. We show…
physics.app-ph2022
Revealing non-Hermitian band structures of photonic Floquet media
Jagang Park, Hyukjoon Cho, Seojoo Lee +7
Periodically driven systems, characterised by their inherent non-equilibrium dynamics, are ubiquitously found in both classical and quantum regimes. In the field of photonics, thes…
physics.optics2022
Resonance-enhanced spectral funneling in Fabry-Perot resonators with a temporal boundary mirror
Kanghee Lee, Junho Park, Seojoo Lee +4
A temporal boundary refers to a specific time at which the properties of an optical medium are abruptly changed. When light interacts with the temporal boundary, its spectral conte…