Non-Hermitian Photonics

A major axis of my research in recent years has been focused on advancing the theory and applications of non-Hermiticity, and in particular parity-time (PT) symmetry, in photonic materials and structures. Interest in PT symmetry has been sparked after the realization that non-Hermitian Hamiltonians can exhibit entirely real energy spectra as long as they commute with the parity-time (PT) operator. In the context of photonics, PT-symmetric Hamiltonians can be realized by judiciously incorporating non-conservative elements of gain and loss in conjunction with the refractive index profile of standard systems. Therefore, gain and loss serve as additional degrees of freedom to design and realize novel photonic structures with new properties and functionalities.

Relevant Publications

Z. Zhang, Y. Zhang, J. Sheng, L. Yang, M.-A. Miri, D. N. Christodoulides, B. He, Y. Zhang, and M. Xiao, Observation of parity-time symmetry in optically induced atomic lattices, Physical Review Letters, vol. 117, pp. 123601 (2016).
H. Hodaei, A. Hassan, W. Hayenga, M.-A. Miri, and D. N. Christodoulides, M. Khajavikhan, Dark-state lasers: Mode management using exceptional points, Optics Letters, vol. 41, pp. 3049-3052 (2016).
M.-A. Miri, A. Alu, Nonlinearity-induced PT-symmetry without material gain, New Journal of Physics, vol. 18, pp. 065001 (2016).
A. U. Hassan, H. Hodaei, M.-A. Miri, M. Khajavikhan, and D. N. Christodoulides, Integrable nonlinear parity-time-symmetric optical oscillator, Physical Review E, vol. 93, pp. 042219 (2016).
M.-A. Miri, M. A. Eftekhar, M. Facao, A. F. Abouraddy, A. Bakry, M. A. N. Razvi, A. Alshahrie, A. Alu, and D. N. Christodoulides, Scattering properties of PT-symmetric objects, Journal of Optics, vol. 18, pp. 075104 (2016).
H. Hodaei, M.-A. Miri, M. Heinrich, D. N. Christodoulides, M. Khajavikhan, Single mode lasing in transversely multi-moded PT-symmetric microring resonators, Laser & Photonics Reviews, vol. 10, pp. 494–499 (2016).
H. Hodaei, A. U. Hassan, J. Ren, W. E. Hayenga, M.-A. Miri, D. N. Christodoulides, and M. Khajavikhan, Design considerations for single mode microring lasers using parity-time-symmetry, IEEE Journal of Selected Topics in Quantum Electronics, vol. 22, pp. 1500307 (2016).
M. Wimmer, M.-A. Miri, D. N. Christodoulides, U. Peschel, Observation of Bloch oscillations in complex PT-symmetric photonic lattices, Scientific Reports, vol. 5, pp. 17760 (2015).
A. U. Hassan, H. Hodaei, M.-A. Miri, D. N. Christodoulides, M. Khajavikhan, Nonlinear reversal of the PT-symmetric phase transition in a system of coupled semiconductor microring resonators, Physical Review A, vol. 92, pp. 063807 (2015).
H. Hodaei, M.-A. Miri, A. U. Hassan, W. E. Hayenga, M. Heinrich, D. N. Christodoulides, and M. Khajavikhan, Parity-time-symmetric coupled microring lasers operating around an exceptional point, Optics Letters, vol. 40, pp. 4955-4958 (2015).
M. Wimmer, A. Regensburger, M.-A. Miri, C. Bersch, D. N. Christodoulides, and U. Peschel, Observation of optical solitons in PT-symmetric lattices, Nature Communications, vol. 6, pp. 7782 (2015).
H. Hodaei, M.-A. Miri, M. Heinrich, D. N. Christodoulides, M. Khajavikhan, Parity-time-symmetric micro-ring lasers, Science, vol. 346, no. 6212, pp. 975-978 (2014).
A. K. Sarma, M.-A. Miri, Z. H. Musslimani, and D. N. Christodoulides, Continuous and discrete Schrödinger systems with parity-time-symmetric nonlinearities, Physical Review E, vol. 89, 052918 (2014).
J. Sheng, M.-A. Miri, D. N. Christodoulides, and M. Xiao, PT-symmetric optical potentials in a coherent atomic medium, Physical Review A, vol. 88, 041803(R) (2013).
A. Regensburger, M.-A. Miri, C. Bersch, J. Näger, G. Onishchukov, D. N. Christodoulides, and U. Peschel, Observation of defect states in PT-symmetric optical lattices, Physical Review Letters, vol. 110, 223902 (2013).
M.-A. Miri, M. Heinrich, D. N. Christodoulides, Supersymmetry-generated complex optical potentials with real spectra, Physical Review A, vol. 87, 043819 (2013).
M.-A. Miri, A. B. Aceves, T. Kottos, V. Kovanis, and D. N. Christodoulides, Bragg solitons in nonlinear PT-symmetric periodic potentials, Physical Review A, vol. 86, 033801 (2012).
A. Regensburger, C. Bersch, M.-A. Miri, G. Onishchukov, D. N. Christodoulides, and U. Peschel, Parity-time synthetic photonic lattices, Nature (London), vol. 488, pp. 167-171 (2012).
M.-A. Miri, A. Regensburger, U. Peschel, and D. N. Christodoulides, Optical mesh lattices with PT-symmetry, Physical Review A, vol. 86, 023807 (2012).
M.-A. Miri, P. LiKamWa, and D. N. Christodoulides, Large area single-mode parity-time-symmetric laser amplifiers, Optics Letters, vol. 37, pp. 764-766 (2012).

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