Publications

J. Bellessa, J. Bloch, E. Deleporte, V. M. Menon, H. S. Nguyen, H. Ohadi, S. Ravet, T. Boulier (2024). Materials for excitons–polaritons: Exploiting the diversity of semiconductors. MRS Bulletin.

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Anindya Sundar Paul, Sai Kiran Rajendran, David Ziemkiewicz, Thomas Volz, Hamid Ohaid (2024). Local tuning of Rydberg exciton energies in nanofabricated Cu2O pillars. Commun. Mater..

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J. DeLange, K. Barua, A. S. Paul, H. Ohadi, V. Zwiller, S. Steinhauer, H. Alaeian (2023). Highly-excited Rydberg excitons in synthetic thin-film cuprous oxide. Sci Rep.

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T. Plaskocinski, Y. Arita, G. D. Bruce, S. Persheyev, K. Dholakia, A. Di Falco, H. Ohadi (2023). Laser writing of parabolic micromirrors with a high numerical aperture for optical trapping and rotation. APL.

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Mengjie Wei, Wouter Verstraelen, Konstantinos Orfanakis, Arvydas Ruseckas, Timothy C. H. Liew, Ifor D.W. Samuel, Graham A. Turnbull, Hamid Ohadi (2022). Optically trapped room temperature polariton condensate in an organic semiconductor. Nature Comm..

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Konstantinos Orfanakis, Sai Kiran Rajendran, Valentin Walther, Thomas Volz, Thomas Pohl, Hamid Ohadi (2022). Rydberg exciton–polaritons in a Cu2O microcavity. Nature Mat..

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Y. C. Balas, E. S. Sedov, G. G. Paschos, Z. Hatzopoulos, H. Ohadi, A. V. Kavokin, and P. G. Savvidis (2022). Stochastic Single-Shot Polarization Pinning of Polariton Condensate at High Temperatures. Phys. Rev. Lett..

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Konstantinos Orfanakis, Sai Kiran Rajendran, Hamid Ohadi, Sylwia Zielińska-Raczyńska, Gerard Czajkowski, Karol Karpiński, and David Ziemkiewicz (2021). Quantum confined Rydberg excitons in Cu2O nanoparticles. Phys. Rev. B.

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K. Orfanakis, A. F. Tzortzakakis, D. Petrosyan, P. G. Savvidis, and H. Ohadi (2021). Ultralong temporal coherence in optically trapped exciton-polariton condensates. Phys. Rev. B.

Mengjie Wei, Sai Kiran Rajendran, Hamid Ohadi, Laura Tropf, Malte C. Gather, Graham A. Turnbull, Ifor D. W. Samuel (2019). Low-threshold polariton lasing in a highly disordered conjugated polymer. Optica.

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Yago del Valle-Inclan Redondo, Helgi Sigurdsson, Hamid Ohadi, Ivan A. Shelykh, Yuri G. Rubo, Zacharias Hatzopoulos, Pavlos G. Savvidis, Jeremy J. Baumberg (2019). Observation of inversion, hysteresis, and collapse of spin in optically trapped polariton condensates. Physical Review B.

Sai Kiran Rajendran, Mengjie Wei, Hamid Ohadi, Arvydas Ruseckas, Graham A. Turnbull, Ifor D. W. Samuel (2019). Low Threshold Polariton Lasing from a Solution-Processed Organic Semiconductor in a Planar Microcavity. Advanced Optical Materials.

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S. I. Tsintzos, A. Tzimis, G. Stavrinidis, A. Trifonov, Z. Hatzopoulos, J. J. Baumberg, H. Ohadi, P. G. Savvidis (2018). Electrical Tuning of Nonlinearities in Exciton-Polariton Condensates. Physical Review Letters.

H. Ohadi, Y. del Valle-Inclan Redondo, A. J. Ramsay, Z. Hatzopoulos, T. C. H. Liew, P. R. Eastham, P. G. Savvidis, J. J. Baumberg (2018). Synchronization crossover of polariton condensates in weakly disordered lattices. Physical Review B.

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Yago del Valle-Inclan Redondo, Hamid Ohadi, Yuri G. Rubo, Orr Beer, Andrew J. Ramsay, Symeon I. Tsintzos, Zacharias Hatzopoulos, Pavlos G. Savvidis, Jeremy J. Baumberg (2018). Stochastic spin flips in polariton condensates: nonlinear tuning from GHz to sub-Hz. New Journal of Physics.

Dean Kos, Hippolyte P. A. G. Astier, Giuliana Di Martino, Jan Mertens, Hamid Ohadi, Domenico De Fazio, Duhee Yoon, Zhuang Zhao, Alexander Kuhn, Andrea C. Ferrari, Christopher J. B. Ford, Jeremy J. Baumberg (2018). Electrically Controlled Nano and Micro Actuation in Memristive Switching Devices with On-Chip Gas Encapsulation. Small.

O. Be'er, H. Ohadi, Y. del Valle-Inclan Redondo, A. J. Ramsay, S. I. Tsintzos, Z. Hatzopoulos, P. G. Savvidis, J. J. Baumberg (2017). Strain-assisted optomechanical coupling of polariton condensate spin to a micromechanical resonator. Applied Physics Letters.

H. Sigurdsson, A. J. Ramsay, H. Ohadi, Y. G. Rubo, T. C. H. Liew, J. J. Baumberg, I. A. Shelykh (2017). Driven-dissipative spin chain model based on exciton-polariton condensates. Physical Review B.

H. Ohadi, A. J. Ramsay, H. Sigurdsson, Y. del Valle-Inclan Redondo, S. I. Tsintzos, Z. Hatzopoulos, T. C. H. Liew, I. A. Shelykh, Y. G. Rubo, P. G. Savvidis, J. J. Baumberg (2017). Spin Order and Phase Transitions in Chains of Polariton Condensates. Physical Review Letters.

Felix Benz, Mikolaj K. Schmidt, Alexander Dreismann, Rohit Chikkaraddy, Yao Zhang, Angela Demetriadou, Cloudy Carnegie, Hamid Ohadi, Bart de Nijs, Ruben Esteban, Javier Aizpurua, Jeremy J. Baumberg (2016). Single-molecule optomechanics in “picocavities”. Science.

Alexander Dreismann, Hamid Ohadi, Yago del Valle-Inclan Redondo, Ryan Balili, Yuri G. Rubo, Simeon I. Tsintzos, George Deligeorgis, Zacharias Hatzopoulos, Pavlos G. Savvidis, Jeremy J. Baumberg (2016). A sub-femtojoule electrical spin-switch based on optically trapped polariton condensates. Nature Materials.

H. Ohadi, R. L. Gregory, T. Freegarde, Y. G. Rubo, A. V. Kavokin, N. G. Berloff, P. G. Lagoudakis (2016). Nontrivial Phase Coupling in Polariton Multiplets. Physical Review X.

P. Cilibrizzi, H. Sigurdsson, T. C. H. Liew, H. Ohadi, A. Askitopoulos, S. Brodbeck, C. Schneider, I. A. Shelykh, S. Höfling, J. Ruostekoski, P. Lagoudakis (2016). Half-skyrmion spin textures in polariton microcavities. Physical Review B.

Felix Benz, Rohit Chikkaraddy, Andrew Salmon, Hamid Ohadi, Bart de Nijs, Jan Mertens, Cloudy Carnegie, Richard W. Bowman, Jeremy J. Baumberg (2016). SERS of Individual Nanoparticles on a Mirror: Size Does Matter, but so Does Shape. The Journal of Physical Chemistry Letters.

Tao Ding, Christian Rüttiger, Xuezhi Zheng, Felix Benz, Hamid Ohadi, Guy A. E. Vandenbosch, Victor V. Moshchalkov, Markus Gallei, Jeremy J. Baumberg (2016). Fast Dynamic Color Switching in Temperature-Responsive Plasmonic Films. Advanced Optical Materials.

H. Ohadi, Y. del Valle-Inclan Redondo, A. Dreismann, Y. G. Rubo, F. Pinsker, S. I. Tsintzos, Z. Hatzopoulos, P. G. Savvidis, J. J. Baumberg (2016). Tunable Magnetic Alignment between Trapped Exciton-Polariton Condensates. Physical Review Letters.

F. Pinsker, W. Bao, Y. Zhang, H. Ohadi, A. Dreismann, J. J. Baumberg (2015). Fractional quantum mechanics in polariton condensates with velocity-dependent mass. Physical Review B.

P. Cilibrizzi, H. Sigurdsson, T. C. H. Liew, H. Ohadi, S. Wilkinson, A. Askitopoulos, I. A. Shelykh, P. G. Lagoudakis (2015). Polariton spin whirls. Physical Review B.

H. Ohadi, A. Dreismann, Y. G. Rubo, F. Pinsker, Y. del Valle-Inclan Redondo, S. I. Tsintzos, Z. Hatzopoulos, P. G. Savvidis, J. J. Baumberg (2015). Spontaneous Spin Bifurcations and Ferromagnetic Phase Transitions in a Spinor Exciton-Polariton Condensate. Physical Review X.

A. Askitopoulos, T. C. H. Liew, H. Ohadi, Z. Hatzopoulos, P. G. Savvidis, P. G. Lagoudakis (2015). Robust platform for engineering pure-quantum-state transitions in polariton condensates. Physical Review B.

P. Cilibrizzi, H. Ohadi, T. Ostatnicky, A. Askitopoulos, W. Langbein, P. Lagoudakis (2014). Linear Wave Dynamics Explains Observations Attributed to Dark Solitons in a Polariton Quantum Fluid. Physical Review Letters.

A. Askitopoulos, H. Ohadi, A. V. Kavokin, Z. Hatzopoulos, P. G. Savvidis, P. G. Lagoudakis (2013). Polariton condensation in an optically induced two-dimensional potential. Physical Review B.

Elena Kammann, Hamid Ohadi, Maria Maragkou, Alexey V. Kavokin, Pavlos G. Lagoudakis (2012). Crossover from photon to exciton-polariton lasing. New Journal of Physics.

H. Ohadi, E. Kammann, T. C. H. Liew, K. G. Lagoudakis, A. V. Kavokin, P. G. Lagoudakis (2012). Spontaneous Symmetry Breaking in a Polariton and Photon Laser. Physical Review Letters.

E. Kammann, T. C. H. Liew, H. Ohadi, P. Cilibrizzi, P. Tsotsis, Z. Hatzopoulos, P. G. Savvidis, A. V. Kavokin, P. G. Lagoudakis (2012). Nonlinear Optical Spin Hall Effect and Long-Range Spin Transport in Polariton Lasers. Physical Review Letters.

J. E. Bateman, R. L. D. Murray, M. Himsworth, H. Ohadi, A. Xuereb, T. Freegarde (2010). Hänsch–Couillaud locking of Mach?Zehnder interferometer for carrier removal from a phase-modulated optical spectrum. Journal of the Optical Society of America B.

Hamid Ohadi, Matthew Himsworth, Andre Xuereb, Tim Freegarde (2009). Magneto-optical trapping and background-free imaging for atoms near nanostructured surfaces. Optics Express.

E. S. Phillips, R. J. Hendricks, A. M. Abdulla, H. Ohadi, D. R. Crick, K. Koo, D. M. Segal, R. C. Thompson (2008). Dynamics of axialized laser-cooled ions in a Penning trap. Physical Review A.

D. R. Crick, H. Ohadi, I. Bhatti, R. C. Thompson, D. M. Segal (2008). Two-ion Coulomb crystals of Ca+ in a Penning trap. Optics Express.

J. R. Castrejón-Pita, H. Ohadi, D. R. Crick, D. F. A. Winters, D. M. Segal, R. C. Thompson (2007). Novel designs for Penning ion traps. Journal of Modern Optics.