Search Results - "Hatzopoulos, Z."

Steady state oscillations of circular currents in concentric polariton condensates by Lukoshkin, Vladimir, Sedov, Evgeny, Kalevich, Vladimir, Hatzopoulos, Z., Savvidis, P. G., Kavokin, Alexey

“…Concentric ring exciton polariton condensates emerging under non-resonant laser pump in an annular trapping potential support persistent circular currents of…”
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Optical superfluid phase transitions and trapping of polariton condensates by Cristofolini, P, Dreismann, A, Christmann, G, Franchetti, G, Berloff, N G, Tsotsis, P, Hatzopoulos, Z, Savvidis, P G, Baumberg, J J

“…Semiconductor microcavities are used to support freely flowing polariton quantum liquids allowing the direct observation and optical manipulation of…”
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Geometrically locked vortex lattices in semiconductor quantum fluids by Tosi, G., Christmann, G., Berloff, N.G., Tsotsis, P., Gao, T., Hatzopoulos, Z., Savvidis, P.G., Baumberg, J.J.

“…Macroscopic quantum states can be easily created and manipulated within semiconductor microcavity chips using exciton-photon quasiparticles called polaritons…”
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Polariton condensation in an optically induced two-dimensional potential by Askitopoulos, A., Ohadi, H., Kavokin, A. V., Hatzopoulos, Z., Savvidis, P. G., Lagoudakis, P. G.

“…We demonstrate experimentally the condensation of exciton polaritons through optical trapping. The nonresonant pump profile is shaped into a ring and projected…”
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Stochastic circular persistent currents of exciton polaritons by Barrat, J., Cherbunin, Roman, Sedov, Evgeny, Aladinskaia, Ekaterina, Liubomirov, Alexey, Litvyak, Valentina, Petrov, Mikhail, Zhou, Xiaoqing, Hatzopoulos, Z., Kavokin, Alexey, Savvidis, P. G.

“…We monitor the orbital degree of freedom of exciton-polariton condensates confined within an optical trap and unveil the stochastic switching of persistent…”
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Spontaneous Spin Bifurcations and Ferromagnetic Phase Transitions in a Spinor Exciton-Polariton Condensate by Ohadi, H., Dreismann, A., Rubo, Y. G., Pinsker, F., del Valle-Inclan Redondo, Y., Tsintzos, S. I., Hatzopoulos, Z., Savvidis, P. G., Baumberg, J. J.

“…We observe a spontaneous parity breaking bifurcation to a ferromagnetic state in a spatially trapped exciton-polariton condensate. At a critical bifurcation…”
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Spin Order and Phase Transitions in Chains of Polariton Condensates by Ohadi, H, Ramsay, A J, Sigurdsson, H, Del Valle-Inclan Redondo, Y, Tsintzos, S I, Hatzopoulos, Z, Liew, T C H, Shelykh, I A, Rubo, Y G, Savvidis, P G, Baumberg, J J

“…We demonstrate that multiply coupled spinor polariton condensates can be optically tuned through a sequence of spin-ordered phases by changing the coupling…”
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Sculpting oscillators with light within a nonlinear quantum fluid by Tosi, G., Christmann, G., Berloff, N. G., Tsotsis, P., Gao, T., Hatzopoulos, Z., Savvidis, P. G., Baumberg, J. J.

“…Polaritons—quasiparticles made up of a photon and exciton strongly coupled together—can form macroscopic quantum states even at room temperature. Now these…”
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A GaAs polariton light-emitting diode operating near room temperature by Savvidis, P. G, Tsintzos, S. I, Pelekanos, N. T, Konstantinidis, G, Hatzopoulos, Z

“…The increasing ability to control light-matter interactions at the nanometre scale has improved the performance of semiconductor lasers in the past decade. The…”
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Optical Bistability under Nonresonant Excitation in Spinor Polariton Condensates by Pickup, L, Kalinin, K, Askitopoulos, A, Hatzopoulos, Z, Savvidis, P G, Berloff, N G, Lagoudakis, P G

“…We realize bistability in the spinor of polariton condensates under nonresonant optical excitation and in the absence of biasing external fields. Numerical…”
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Hybrid organic-inorganic polariton laser by Paschos, G. G., Somaschi, N., Tsintzos, S. I., Coles, D., Bricks, J. L., Hatzopoulos, Z., Lidzey, D. G., Lagoudakis, P. G., Savvidis, P. G.

“…Organic materials exhibit exceptional room temperature light emitting characteristics and enormous exciton oscillator strength, however, their low charge…”
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Generation of Quantized Polaritons below the Condensation Threshold by Cristofolini, Peter, Hatzopoulos, Z, Savvidis, Pavlos G, Baumberg, Jeremy J

“…Exciton polaritons in high quality semiconductor microcavities can travel long macroscopic distances (>100  μm) due to their ultralight effective mass. The…”
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Electrical Tuning of Nonlinearities in Exciton-Polariton Condensates by Tsintzos, S I, Tzimis, A, Stavrinidis, G, Trifonov, A, Hatzopoulos, Z, Baumberg, J J, Ohadi, H, Savvidis, P G

“…A primary limitation of the intensively researched polaritonic systems compared to their atomic counterparts for the study of strongly correlated phenomena and…”
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Nonlinear optical spin Hall effect and long-range spin transport in polariton lasers by Kammann, E, Liew, T C H, Ohadi, H, Cilibrizzi, P, Tsotsis, P, Hatzopoulos, Z, Savvidis, P G, Kavokin, A V, Lagoudakis, P G

“…We report on the experimental observation of the nonlinear analogue of the optical spin Hall effect under highly nonresonant circularly polarized excitation of…”
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Lasing threshold doubling at the crossover from strong to weak coupling regime in GaAs microcavity by Tsotsis, P, Eldridge, P S, Gao, T, Tsintzos, S I, Hatzopoulos, Z, Savvidis, P G

“…In a polariton, laser coherent monochromatic light is produced by a low-energy state of the system at the bottom of a polariton 'trap', where a condensate of…”
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Stochastic Single-Shot Polarization Pinning of Polariton Condensate at High Temperatures by Balas, Y C, Sedov, E S, Paschos, G G, Hatzopoulos, Z, Ohadi, H, Kavokin, A V, Savvidis, P G

“…We resolve single-shot polariton condensate polarization dynamics, revealing a high degree of circular polarization persistent up to T=170  K. The statistical…”
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An exciton-polariton bolometer for terahertz radiation detection by Paschos, G. G., Liew, T. C. H., Hatzopoulos, Z., Kavokin, A. V., Savvidis, P. G., Deligeorgis, G.

“…We experimentally investigate the feasibility of a bolometric device based on exciton-polaritons. Initial measurements presented in this work show that heating…”
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Tunable Magnetic Alignment between Trapped Exciton-Polariton Condensates by Ohadi, H, Del Valle-Inclan Redondo, Y, Dreismann, A, Rubo, Y G, Pinsker, F, Tsintzos, S I, Hatzopoulos, Z, Savvidis, P G, Baumberg, J J

“…Tunable spin correlations are found to arise between two neighboring trapped exciton-polariton condensates which spin polarize spontaneously. We observe a…”
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Optical control of spin textures in quasi-one-dimensional polariton condensates by Antón, C., Morina, S., Gao, T., Eldridge, P. S., Liew, T. C. H., Martín, M. D., Hatzopoulos, Z., Savvidis, P. G., Shelykh, I. A., Viña, L.

“…We investigate spin transport through polarization-resolved spectroscopy by propagating polariton condensates in a quasi-one-dimensional microcavity ridge…”
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Dynamics of a polariton condensate transistor switch by Antón, C., Liew, T. C. H., Tosi, G., Martín, M. D., Gao, T., Hatzopoulos, Z., Eldridge, P. S., Savvidis, P. G., Viña, L.

“…We present a time-resolved study of the logical operation of a polariton condensate transistor switch. Creating a polariton condensate (source) in a GaAs…”
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