Zobrazeno 1 - 10
of 260
pro vyhledávání: '"Baumberg, J. J."'
Autor:
Redolat, J., Camarena-Pérez, M., Griol, A., Kovylina, M., Xomalis, A., Baumberg, J. J., Martínez, A., Pinilla-Cienfuegos, E.
Controlled integration of metallic nanoparticles (NPs) onto photonic nanostructures enables realization of complex devices for extreme light confinement and enhanced light-matter interaction. This can be achieved combining Nanoparticle-on-Mirror (NPo
Externí odkaz:
http://arxiv.org/abs/2208.12593
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:
Haigh, J. A., Langenfeld, S., Lambert, N. J., Baumberg, J. J., Ramsay, A. J., Nunnenkamp, A., Ferguson, A. J.
Publikováno v:
Phys. Rev. A 92, 063845 (2015)
We demonstrate that yttrium iron garnet microspheres support optical whispering gallery modes similar to those in non-magnetic dielectric materials. The direction of the ferromagnetic moment tunes both the resonant frequency via the Voigt effect as w
Externí odkaz:
http://arxiv.org/abs/1510.06661
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:
Tosi, G., Christmann, G., Berloff, N. G., Tsotsis, P., Gao, T., Hatzopoulos, Z., Savvidis, P. G., Baumberg, J. J.
Seeing macroscopic quantum states directly remains an elusive goal. Particles with boson symmetry can condense into such quantum fluids producing rich physical phenomena as well as proven potential for interferometric devices [1-10]. However direct i
Externí odkaz:
http://arxiv.org/abs/1111.7133
We perform high-resolution photocurrent (PC) spectroscopy to investigate resonantly the neutral exciton ground-state (X0) in a single InAs/GaAs self-assembled quantum dot (QD) embedded in the intrinsic region of an n-i-Schottky photodiode based on a
Externí odkaz:
http://arxiv.org/abs/1106.1422