Spawning rings of exceptional points out of Dirac cones

Nature
Bo ZhenMarin Soljačić

Abstract

The Dirac cone underlies many unique electronic properties of graphene and topological insulators, and its band structure--two conical bands touching at a single point--has also been realized for photons in waveguide arrays, atoms in optical lattices, and through accidental degeneracy. Deformation of the Dirac cone often reveals intriguing properties; an example is the quantum Hall effect, where a constant magnetic field breaks the Dirac cone into isolated Landau levels. A seemingly unrelated phenomenon is the exceptional point, also known as the parity-time symmetry breaking point, where two resonances coincide in both their positions and widths. Exceptional points lead to counter-intuitive phenomena such as loss-induced transparency, unidirectional transmission or reflection, and lasers with reversed pump dependence or single-mode operation. Dirac cones and exceptional points are connected: it was theoretically suggested that certain non-Hermitian perturbations can deform a Dirac cone and spawn a ring of exceptional points. Here we experimentally demonstrate such an 'exceptional ring' in a photonic crystal slab. Angle-resolved reflection measurements of the photonic crystal slab reveal that the peaks of reflectivity follow th...Continue Reading

References

Feb 15, 2001·Physical Review Letters·C DembowskiA Richter
Mar 21, 2008·Physical Review Letters·K G MakrisZ H Musslimani
Oct 2, 2009·Physical Review Letters·A GuoD N Christodoulides
Mar 17, 2011·Physical Review Letters·Y D ChongA Douglas Stone
Jun 28, 2011·Physical Review Letters·Zin LinDemetrios N Christodoulides
Jun 12, 2012·Physical Review Letters·M LiertzerS Rotter
Aug 10, 2012·Nature·Alois RegensburgerUlf Peschel
Jul 13, 2013·Nature·Chia Wei HsuMarin Soljačić
May 9, 2014·Nano Letters·Chia Wei HsuMarin Soljačić
Nov 22, 2014·Science·Liang FengXiang Zhang
Nov 22, 2014·Science·Hossein HodaeiMercedeh Khajavikhan

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Citations

Feb 13, 2016·Scientific Reports·Pablo San-JoseRamón Aguado
Jun 9, 2016·Proceedings of the National Academy of Sciences of the United States of America·Bo PengLan Yang
Jul 2, 2016·Optics Letters·H HodaeiM Khajavikhan
Aug 25, 2016·Optics Express·Mario C M M SouzaNewton C Frateschi
Nov 25, 2016·Scientific Reports·Sunkyu YuNamkyoo Park
Dec 17, 2015·Scientific Reports·Toshikaze Kariyado, Yasuhiro Hatsugai
Jun 9, 2017·Nature Communications·Yuto AshidaMasahito Ueda
Jun 5, 2018·Physical Chemistry Chemical Physics : PCCP·Gangqiang QinQiao Sun
Jul 18, 2018·Reports on Progress in Physics·Daryl I VulisEric Mazur
Feb 1, 2017·Science Advances·Emma C ReganMarin Soljačić
Jan 5, 2019·Science·Mohammad-Ali Miri, Andrea Alù
Jan 28, 2018·Nature Communications·Niccolò CaselliMassimo Gurioli
Aug 11, 2017·Nature·Hossein HodaeiMercedeh Khajavikhan
Aug 11, 2017·Nature·Weijian ChenLan Yang
Feb 7, 2017·Reports on Progress in Physics·Francesco Monticone, Andrea Alù
Nov 26, 2019·Physical Review Letters·Mengzhen ZhangLiang Jiang
Apr 16, 2016·Physical Review Letters·Tony E Lee
Oct 1, 2016·Physical Review Letters·Zhaoyang ZhangMin Xiao
Sep 29, 2017·Optics Letters·Piotr M KamińskiSamel Arslanagić
Aug 9, 2017·Optics Express·Adi PickSteven G Johnson
Feb 27, 2018·Physical Review Letters·T GaoE A Ostrovskaya
Jul 12, 2018·Nature Communications·Bikashkali MidyaLiang Feng
Nov 25, 2018·Optics Express·Yan-Rong ZhangJing Chen
Mar 17, 2019·Optics Express·Yan-Rong ZhangJing Chen
Nov 9, 2019·Physical Review Letters·Fei SongZhong Wang
Mar 14, 2020·Physical Review Letters·Tong WuXiangdong Zhang
Mar 4, 2020·Optics Express·Yuanzhao YaoKazuaki Sakoda
Feb 12, 2017·Physical Review Letters·Yong XuL-M Duan
Jun 3, 2017·The Journal of Chemical Physics·Anael Ben-Asher, Nimrod Moiseyev
Feb 25, 2017·Physical Review Letters·Shuai YinPochung Chen
Aug 9, 2017·Optics Express·Daryl I VulisEric Mazur
Aug 10, 2017·Optics Express·Ming KangMalin Premaratne
Jun 16, 2018·Optics Letters·S Longhi
Aug 2, 2018·Optics Letters·C T Samlan, Nirmal K Viswanathan
Nov 25, 2018·Optics Express·Bi-Ye XieYan-Feng Chen
Jan 16, 2019·Scientific Reports·Qi Zhong, Ramy El-Ganainy

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