Daniel Leykam (January 7, 2015)

Contact Nonlinear Physics Centre Office: +61-2-6125-9074 Information Research School of Physics and Engineering Mobile: +61-4-2743-4506 The Australian National University E-mail: [email protected] Canberra ACT 0200, Australia http://people.physics.anu.edu.au/~ley112/

Education Ph.D. in Physics, The Australian National University 2012–present • Thesis: Wave and spectral singularities in photonic lattices • Expected completion July 2015

Ph.B. in Physics, The Australian National University 2008–2011 • Thesis: Discrete multivortex solitons • 1st Class Honours & University Medal in Physics

Recent Awards & • Australian Postgraduate Award & ANU Research Supplementary Scholarship 2012–present Scholarships • Group of Eight / Germany Joint Research Cooperation Scheme Grant ($20,000) 2012–2013 Project title: Optical vortices in periodic and chiral photonic structures • Travel grant to attend Workshop on Spin Orbit Interaction for Light & Matter Waves 2013 • ANU University Medal in Physics 2011 • ANU National Achievement Scholarship 2008–2011

International Sergej Flach (Massey University, New Zealand) 2013–present Collaborations • Flat band lattices & Anderson localization [9,10,12] • 2 week visit to Massey University & departmental seminar (August 2013)

Cornelia Denz (M¨unsterUniversity, Germany) 2011–present • Discrete vortices in optically induced lattices [11] & Lieb lattices in silica glass [13] • Student exchanges funded by Group of Eight / German Academic Exchange Service Travel Grant • 5 visits to M¨unster& 4 visiting students hosted at ANU

Vladimir Konotop (Lisbon University, Portugal) 2012 • Discrete vortex solitons in parity time-symmetric waveguide arrays [7]

Boris Malomed (Tel Aviv University, Israel) 2012 • Composite vortex solitons in waveguide arrays [8]

Research • Published 12 articles since 2010, including 1 in Physical Review Letters, accumulating over 70 Experience citations; h-index = 6 (Google Scholar)

Research topics have included • Anderson localization in flat band lattices. Eigenmode & wavepacket statistics. Perturbation theory for weak disorder scaling laws & density of states singularities. • Conical intersections in photonic lattices. Pseudospin-mediated optical vortex generation. Design of femtosecond laser-written Lieb lattices in fused silica glass. • Theory of spontaneous parametric down-conversion in waveguide arrays with nontrivial topology. • Beam propagation in nonlinear media via split step, symplectic methods. Discrete & periodic lattices. Saturable, nonlocal & photorefractive nonlinearities. Soliton profiles & linear stability. • Undergraduate research on topics including studying the Earth’s inner core with seismic waves, optical trapping of airborne particles, and wakes left by charged particles in plasmas.

1 of 5 References Dr. Anton Desyatnikov (e-mail: [email protected]) Nonlinear Physics Centre, Research School of Physics and Engineering The Australian National University

Prof. Sergej Flach (e-mail: s.fl[email protected]) Centre for Theoretical Chemistry and Physics, New Zealand Institute for Advanced Study Massey University

Teaching Tutor 2012–2014 Experience • 4th year electromagnetism (Tutorial delivery, assignment & exam marking) • 3rd year theoretical physics (Tutorial delivery & weekly assignment marking) Honours student co-supervision 2014

Professional Referee: Physical Review (Letters, A, E), Optics Express, Optics Letters, Journal of the Optical activities Society of America B, Optics Communications, Europhysics Letters Member: Optical Society of America, Australian Institute of Physics, SPIE

Research Waves in periodic media: Dirac points & conical intersections, Berry curvature, topological interests insulators, PT symmetry, flat bands, Anderson localization, emulation of relativistic effects Singular optics: phase & polarization singularities, vortex knots, angular momentum, pseudospin Nonlinear optics: discrete vortex solitons, Bose-Einstein condensates, modulational instability Quantum optics: spontaneous parametric down-conversion, optomechanics, weak values

Miscellaneous Scientific programming skills • Fluent: Matlab, Mathematica, LATEX • Familiar: Fortran, C, shell scripting Languages • English (native) • German (conversational) • Latin (reading) Ultramarathon • Inward Bound 2011 (72km, 1st) • Sri Chinmoy Canberra 101 2014 (56km, ∼5:45)

2 of 5 Publications 15. D. Leykam, A. S. Solntsev, A. A. Sukhorukov, & A. S. Desyatnikov How lattice topology affects spontaneous parametric down-conversion in nonlinear waveguide arrays in preparation 14. O. Bahat-Treidel, D. Leykam, & A. S. Desyatnikov Optical angular momentum and pseudospin-orbit coupling in photonic graphene in preparation 13. F. Diebel, D. Leykam, S. Kroesen, C. Denz, & A. S. Desyatnikov Observation of integer pseudospin conical diffraction in Lieb lattices in preparation 12. J. D. Bodyfelt, D. Leykam, C. Danieli, X. Yu, & S. Flach Flat bands under correlated perturbations Physical Review Letters 113, 236403 (2014) 11. F. Diebel, D. Leykam, M. Boguslawski, P. Rose, C. Denz, & A. S. Desyatnikov All-optical switching in optically induced nonlinear waveguide couplers Applied Physics Letters 104, 261111 (2014) 10. S. Flach, D. Leykam, J. D. Bodyfelt, P. Matthies, & A. S. Desyatnikov Detangling flat bands into Fano lattices Europhysics Letters 105, 30001 (2014), Editor’s choice 9. D. Leykam, S. Flach, O. Bahat-Treidel, & A. S. Desyatnikov Flat band states: disorder and nonlinearity Physical Review B 88, 224203 (2013) 8. D. Leykam, B. Malomed, & A. S. Desyatnikov Composite vortices in nonlinear circular waveguide arrays Journal of Optics 15, 044016 (2013) 7. D. Leykam, V. V. Konotop, & A. S. Desyatnikov Discrete vortex solitons and parity time symmetry Optics Letters 38, 371 (2013) 6. D. Leykam & A. S. Desyatnikov Vortex switching with discrete multivortex solitons Physical Review A 86, 043812 (2012) 5. D. Leykam, O. Bahat-Treidel, & A. S. Desyatnikov Pseudospin and nonlinear conical diffraction in Lieb lattices Physical Review A 86, 031805(R) (2012) 4. R. L. Dewar & D. Leykam Dressed test particles, oscillation centres and pseudo-orbits Plasma Physics and Controlled Fusion 54, 014002 (2012) 3. D. Leykam & A. S. Desyatnikov Discrete multivortex solitons Optics Letters 36, 4806 (2011) 2. V. G. Shvedov, A. V. Rode, Ya. V. Izdebskaya, D. Leykam, A. S. Desyatnikov, W. Kro- likowski, & Yu. S. Kivshar Laser speckle field as a multiple particle trap Journal of Optics 12, 1234003 (2010) 1. D. Leykam, H. Tkalˇci´c,& A. M. Reading Core structure reexamined using new teleseismic data recorded in Antarctica: Evidence for, at most, weak cylindrical seismic anisotropy in the inner core Geophysical Journal International 180, 1329 (2010)

3 of 5 Conference 11. D. Leykam, A. A. Solntsev, A. A. Sukhorukov, & A. S. Desyatnikov Presentations Effect of lattice topology on spontaneous parametric down-conversion in quadratic nonlinear waveguide arrays 21st Australian Institute of Physics Congress, Canberra, Australia, December 2014 10. D. Leykam, S. Flach, O. Bahat-Treidel, & A. S. Desyatnikov Anderson localization and nonlinearity in flat bands 2nd International Workshop Nonlinear Photonics, Sudak, Ukraine, September 2013 9. D. Leykam, O. Bahat-Treidel, & A. S. Desyatnikov Conical diffraction, pseudospin, and nonlinear wave dynamics in photonic Lieb lattices CLEO/Europe-IQEC, Munich, Germany, May 2013 8. D. Leykam, O. Bahat-Treidel, & A. S. Desyatnikov Nonlinear wave dynamics in photonic Lieb lattices: the role of pseudospin International Workshop on Spin-Orbit Interaction for Light and Matter Waves, Dresden, Ger- many, April 2013 7. D. Leykam, O. Bahat-Treidel, & A. S. Desyatnikov Nonlinear conical diffraction in photonic Lieb lattices 20th Australian Institute of Physics Congress, Sydney, Australia, December 2012 6. D. Leykam, O. Bahat-Treidel, & A. S. Desyatnikov Pseudospin and nonlinear conical diffraction in photonic lattices Conference on Optics, Atoms and Laser Applications, Brisbane, Australia, December 2012 5. D. Leykam & A. S. Desyatnikov Multivortex solitons and charge flipping in photorefractive media 5th International Conference “Singular Optics”, Sevastopol, Ukraine, September 2012 4. D. Leykam & A. S. Desyatnikov Discrete multivortex solitons in photonic lattices Conference on Optics, Atoms and Laser Applications, Melbourne, Australia, December 2011 3. D. Leykam & A. S. Desyatnikov Discrete multivortex solitons in waveguide arrays The 10th International Conference on Correlation Optics, Chernivtsi, Ukraine, September 2011 2. D. Leykam & A. S. Desyatnikov Vortex clusters in coupled nonlinear waveguides International Workshop on Nonlinear Photonics, Kharkov, Ukraine, September 2011 1. D. Leykam, R. L. Dewar & M. Hole Wake field of a supersonic particle in a plasma Gaseous Electronics Meeting, Murramarang, Australia, February 2010

Conference 9. D. Leykam, A. A. Solntsev, A. A. Sukhorukov, & A. S. Desyatnikov Proceedings Effect of lattice topology on spontaneous parametric down-conversion in quadratic nonlinear waveguide arrays 21st Australian Institute of Physics Congress, Canberra, Australia, December 2014 8. F. Diebel, D. Leykam, S. Kroesen, C. Denz, & A. S. Desyatnikov Observation of pseudospin 1 conical diffraction in a photonic Lieb lattice 21st Australian Institute of Physics Congress, Canberra, Australia, December 2014 7. F. Diebel, D. Leykam, S. Kroesen, C. Denz, & A. S. Desyatnikov Observation of Conical Diffraction in Photonic Lieb Lattices Advanced Photonics, OSA Technical Digest (Optical Society of America, 2014), NW3A.1 6. F. Diebel, D. Leykam, M. Boguslawski, P. Rose, C. Denz, & A. S. Desyatnikov Nonlinear All-optical Vortex Switch in Optically Induced Two-dimensional Waveguide Arrays Advanced Photonics, OSA Technical Digest (Optical Society of America, 2014), JM5A.44

4 of 5 5. F. Diebel, D. Leykam, M. Boguslawski, P. Rose, C. Denz, & A. S. Desyatnikov Nonlinear switching in optically induced waveguide arrays XXII International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling (2014), paper O-3.3 4. D. Leykam & A. S. Desyatnikov Optical vortices in circular waveguide arrays Proceedings of the Tenth Rochester Conference on Coherence and Quantum Optics, Eds. N. P. Bigelow, J. H. Eberly, and C. R. Stroud, pp. 143-147 (2014) 3. D. Leykam, S. Flach, O. Bahat-Treidel, & A. S. Desyatnikov Anderson localization and nonlinearity in flat bands Proceedings of the 2nd International Workshop “Nonlinear Photonics”, article 6646377 2. D. Leykam, O. Bahat-Treidel, & A. S. Desyatnikov Nonlinear Conical Diffraction in Photonic Lieb Lattices Proceedings of the 20th Australian Institute of Physics Congress, Non-linear Optics 2 (2012) 1. D. Leykam & A. S. Desyatnikov Vortex clusters in coupled nonlinear waveguides International Workshop Nonlinear Photonics (NLP*2011), DOI: 10.1109/NLP.2011.6102662,

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