2 citations · 2 across the 2 of their papers we have counts for
2 papers
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.optics2017
Linear frequency conversion via sudden merging of resonances in time-variant metasurfaces
Kanghee Lee, Jaehyeon Son, Jagang Park +4
Energy conversion in a physical system requires time-translation invariance breaking according to Noether's theorem. Closely associated with this symmetry-conservation relation, th…