Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Ohadi, H."'
Autor:
Plaskocinski, T., Arita, Y., Bruce, G. D., Persheyev, S., Dholakia, K., Di Falco, A., Ohadi, H.
On-chip optical trapping systems allow for high scalability and lower the barrier to access. Systems capable of trapping multiple particles typically come with high cost and complexity. Here we present a technique for making parabolic mirrors with mi
Externí odkaz:
http://arxiv.org/abs/2308.06345
Publikováno v:
Physical Review B 103, 235313 (2021)
We investigate an optically trapped exciton-polariton condensate and observe temporal coherence beyond 1~ns duration. Due to the reduction of the spatial overlap with the thermal reservoir of excitons, the coherence time of the trapped condensate is
Externí odkaz:
http://arxiv.org/abs/2106.13515
Akademický článek
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Autor:
Ohadi, H., Redondo, Y. del Valle-Inclan, Ramsay, A. J., Hatzopoulos, Z., Liew, T. C. H., Eastham, P. R., Savvidis, P. G., Baumberg, J. J.
Publikováno v:
Phys. Rev. B 97, 195109 (2018)
We demonstrate that the synchronization of a lattice of solid-state condensates when inter-site tunnelling is switched on, depends strongly on the weak local disorder. This finding is vital for implementation of condensate arrays as computation devic
Externí odkaz:
http://arxiv.org/abs/1803.03195
Autor:
Be'er, O., Ohadi, H., Redondo, Y. del Valle-Inclan, Ramsay, A. J., Tsintzos, S. I., Hatzopoulos, Z., Savvidis, P. G., Baumberg, J. J.
Publikováno v:
Appl. Phys. Lett. 111, 261104 (2017)
We report spin and intensity coupling of an exciton-polariton condensate to the mechanical vibrations of a circular membrane microcavity. We optically drive the microcavity resonator at the lowest mechanical resonance frequency while creating an opti
Externí odkaz:
http://arxiv.org/abs/1802.05442
Autor:
Ohadi, H., Ramsay, A. J., Sigurdsson, H., Redondo, Y. del Valle-Inclan, Tsintzos, S. I., Hatzopoulos, Z., Liew, T. C. H., Shelykh, I. A., Rubo, Y. G., Savvidis, P. G., Baumberg, J. J.
Publikováno v:
PRL 119, 067401 (2017)
We demonstrate that multiply-coupled spinor polariton condensates can be optically tuned through a sequence of spin-ordered phases by changing the coupling strength between nearest neighbors. For closed 4-condensate chains these phases span from ferr
Externí odkaz:
http://arxiv.org/abs/1709.07921
Autor:
Sigurdsson, H., Ramsay, A. J., Ohadi, H., Rubo, Y. G., Liew, T. C. H., Baumberg, J. J., Shelykh, I. A.
Publikováno v:
Phys. Rev. B 96, 155403 (2017)
An infinite chain of driven-dissipative condensate spins with uniform nearest-neighbor coherent coupling is solved analytically and investigated numerically. Above a critical occupation threshold the condensates undergo spontaneous spin bifurcation (
Externí odkaz:
http://arxiv.org/abs/1704.04811
Autor:
Ohadi, H., Redondo, Y. del Valle-Inclan, Dreismann, A., Rubo, Y. G., Pinsker, F., Tsintzos, S. I., Hatzopoulos, Z., Savvidis, P. G., Baumberg, J. J.
Publikováno v:
Phys. Rev. Lett. 116, 106403 (2016)
Tunable spin correlations are found to arise between two neighboring trapped exciton-polariton condensates which spin-polarize spontaneously. We observe a crossover from an antiferromagnetic- to a ferromagnetic pair state by reducing the coupling bar
Externí odkaz:
http://arxiv.org/abs/1603.02830
Autor:
Ohadi, H., Dreismann, A., Rubo, Y. G., Pinsker, F., Redondo, Y. del Valle-Inclan, Tsintzos, S. I., Hatzopoulos, Z., Savvidis, P. G., Baumberg, J. J.
Publikováno v:
Phys. Rev. X 5, 031002 (2015)
We observe a spontaneous parity breaking bifurcation to a ferromagnetic state in a spatially trapped exciton-polariton condensate. At a critical bifurcation density under nonresonant excitation, the whole condensate spontaneously magnetizes and rando
Externí odkaz:
http://arxiv.org/abs/1507.02471
Autor:
Askitopoulos, A., Liew, T. C. H., Ohadi, H., Hatzopoulos, Z., Savvidis, P. G., Lagoudakis, P. G.
Publikováno v:
Physical Review B 92,035305 2015
We report on pure-quantum-state polariton condensates in optical annular traps. The study of the underlying mechanism reveals that the polariton wavefunction always coalesces in a single pure-quantum-state that, counter-intuitively, is always the upp
Externí odkaz:
http://arxiv.org/abs/1411.4579