Zobrazeno 1 - 10
of 78
pro vyhledávání: '"von der Weid, Jean P."'
Autor:
Kremer, Oscar, Califrer, Igor, Tandeitnik, Daniel, von der Weid, Jean Pierre, Temporão, Guilherme, Guerreiro, Thiago
Publikováno v:
Phys. Rev. Applied 22, 024010, 2024
We implement an all electrical controller for 3D feedback cooling of an optically levitated nanoparticle capable of reaching sub-Kelvin temperatures for the center of mass motion. The controller is based on an optimal policy where state estimation is
Externí odkaz:
http://arxiv.org/abs/2402.18532
The complementarity relation between the visibility and the spectral distinguishability of frequency-displaced photonic wave-packets in a Hong-Ou-Mandel interferometer is studied. An experimental definition of $K$, the distinguishability parameter, i
Externí odkaz:
http://arxiv.org/abs/1701.08103
Autor:
Amaral, Gustavo C., Villafani, Diego C., Baldivieso, Andrea, Garcia, Joaquim Dias, Leibel, Renata G., Herrera, Luis E. Y., Urban, Patryk J., von der Weid, Jean Pierre
We demonstrate an optical fiber fault location method based on the frequency response of the modulated fiber optical backscattered signal in a steady state low-frequency step regime. Careful calibration and measurement allows for the reconstruction o
Externí odkaz:
http://arxiv.org/abs/1609.02933
Autor:
Lima, Vinicius M., Calliari, Felipe, Garcia, Joaquim D., Garcia, João Pedro D., Amaral, Gustavo C., Temporão, Guilherme P., von der Weid, Jean Pierre
We present a complete optoelectronic unit for polarization visualization, switching and control. The system is based on an FPGA unit and comprises: an acquisition unit containing an analog polarimeter and digital-to-analog converters, an FPGA capable
Externí odkaz:
http://arxiv.org/abs/1605.00107
We present a novel methodology able to distinguish meaningful level shifts from typical signal fluctuations. A two-stage regularization filtering can accurately identify the location of the significant level-shifts with an efficient parameter-free al
Externí odkaz:
http://arxiv.org/abs/1602.04379
Autor:
Amaral, Gustavo C, da Silva, Thiago Ferreira, Temporão, Guilherme P, von der Weid, Jean Pierre
We perform a high resolution Fourier Transform Spectroscopy of optical sources in the few-photon regime based on the phenomenon of two-photon interference in a beam splitter. From the heterodyne interferogram between test and reference sources it is
Externí odkaz:
http://arxiv.org/abs/1601.07822
Autor:
da Silva, Thiago Ferreira, Amaral, Gustavo C. do, Vitoreti, Douglas, Temporão, Guilherme P., von der Weid, Jean Pierre
Publikováno v:
J. Opt. Soc. Am. B 32, 545-549 (2015)
We demonstrate a method for characterizing the coherence function of coherent states based on two-photon interference. Two states from frequency mismatched faint laser sources are fed into a Hong-Ou-Mandel interferometer and the interference pattern
Externí odkaz:
http://arxiv.org/abs/1507.02210
Autor:
da Silva, Thiago Ferreira, Amaral, Gustavo C., Temporão, Guilherme P., von der Weid, Jean Pierre
Publikováno v:
Phys. Rev. A 92, 033855 (2015)
We present a Heralded Photon Source based only on linear optics and weak coherent states. By time-tuning a Hong-Ou-Mandel interferometer fed with frequency-displaced coherent states, the output photons can be synchronously heralded following sub-Pois
Externí odkaz:
http://arxiv.org/abs/1507.01929
Akademický článek
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Autor:
da Silva, Thiago Ferreira, Xavier, Guilherme B., Temporão, Guilherme P., von der Weid, Jean Pierre
Publikováno v:
J. Lightwave Technol 32, 2332-2339 (2014)
In this paper we analyze the impact of the spontaneous Raman scattered noise generated from multiple optical classical channels on a single quantum key distribution channel, all within the telecom C-band. We experimentally measure the noise generated
Externí odkaz:
http://arxiv.org/abs/1410.0656