Zobrazeno 1 - 10
of 260
pro vyhledávání: '"Felinto D"'
Autor:
Barros, D. F., Muñoz-Martínez, L. F., Ortiz-Gutiérrez, L., Guerra, C. A. E., Morales, J. E. O., Moreira, R. S. N., Alves, N. D., Tieco, A. F. G., Felinto, D., Saldanha, P. L.
Publikováno v:
Opt. Comm. 443, 34 (2019)
A simplified theory for the wavepackets of the photons emitted during the read process of a quantum memory formed by cold atoms is provided. We arrive at analytical expressions for the single- and double-photon emissions, evidencing superradiant feat
Externí odkaz:
http://arxiv.org/abs/1809.07787
Autor:
Gutierrez, L. G. O., Martinez, L. F. M., Barros, D. F., Morales, J. E. O., Moreira, R. S. N., Alves, N. D., Tieco, A. F. G., Saldanha, P. L., Felinto, D.
Publikováno v:
Phys. Rev. Lett. 120, 083603 (2018)
Superradiance in an ensemble of atoms leads to the collective enhancement of radiation in a particular mode shared by the atoms in their spontaneous decay from an excited state. The quantum aspects of this phenomenon are highlighted when such collect
Externí odkaz:
http://arxiv.org/abs/1708.04854
Autor:
de Almeida, A. J. F., Maynard, M. -A., Banerjee, C., Felinto, D., Goldfarb, F., Tabosa, J. W. R.
We report on the storage of light via the phenomenon of recoil-induced resonance in a pure two- level system of cold cesium atoms. We use a strong coupling beam and a weak probe beam to couple different external momentum states of the cesium atom via
Externí odkaz:
http://arxiv.org/abs/1612.04617
Publikováno v:
Optics Express, 24, 9, (2016)
We report on the amplification of an optical vortex beam carrying orbital angular momentum via induced narrow Raman gain in an ensemble of cold cesium atoms. A 20\% single-pass Raman gain of a weak vortex signal field is observed with a spectral widt
Externí odkaz:
http://arxiv.org/abs/1605.01764
Autor:
Costanzo, L. S., Coelho, A. S., Pellegrino, D., Mendes, M. S., Acioli, L., Cassemiro, K. N., Felinto, D., Zavatta, A., Bellini, M.
Publikováno v:
Phys. Rev. Lett. 116, 023602 (2016)
Broadband single photons are usually considered not to couple efficiently to atomic gases because of the large mismatch in bandwidth. Contrary to this intuitive picture, here we demonstrate that the interaction of ultrashort single photons with a den
Externí odkaz:
http://arxiv.org/abs/1506.00523
Autor:
de Almeida, A. J. F., Sales, J., Maynard, M. -A., Laupretre, T., Bretenaker, F., Felinto, D., Goldfarb, F., Tabosa, J. W. R.
We report on the storage of light via the phenomenon of Coherent Population Oscillation (CPO) in an atomic cesium vapor at room temperature. In the experiment the optical information of a probe field is stored in the CPO of two ground states of a Lam
Externí odkaz:
http://arxiv.org/abs/1409.5727
Autor:
de Oliveira, R. A., Pruvost, L., Barbosa, P. S., Martins, W. S., Barreiro, S., Felinto, D., Bloch, D., Tabosa, J. W. R.
We report on the storage of orbital angu- lar momentum (OAM) of light of a Laguerre-Gaussian mode in an ensemble of cold cesium atoms and its re- trieval along an axis different from the incident light beam. We employed a time-delayed four-wave mixin
Externí odkaz:
http://arxiv.org/abs/1409.5690
Autor:
Florez, H. M., Cruz, L. S., de Miranda, M. H. G., de Oliveira, R. A., Tabosa, J. W. R., Martinelli, M., Felinto, D.
We report a detailed investigation on the properties of correlation spectra for cold atoms under the condition of Electromagnetically Induced Transparency (EIT). We describe the transition in the system from correlation to anti-correlation as the int
Externí odkaz:
http://arxiv.org/abs/1308.0849
We report on the observation of enhanced four-wave mixing via crossover resonance in a Doppler broadened cesium vapor. Using a single laser frequency, a resonant parametric process in a double-$\Lambda$ level configuration is directly excited for a s
Externí odkaz:
http://arxiv.org/abs/1107.5768
Autor:
Mishina, O. S., Scherman, M., Lombardi, P., Ortalo, J., Felinto, D., Sheremet, A. S., Bramati, A., Kupriyanov, D. V., Laurat, J., Giacobino, E.
Publikováno v:
Physical Review A: Atomic, Molecular and Optical Physics 83 (2011) 053809
Electromagnetically induced transparency (EIT) has mainly been modelled for three-level systems. In particular, a considerable interest has been dedicated to the Lambda-configuration, with two ground states and one excited state. However, in the alka
Externí odkaz:
http://arxiv.org/abs/1101.6039