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Reconstruction of photon number conditioned states using phase randomized homodyne measurements

Autor: Chrzanowski, H. M., Assad, S. M., Bernu, Julien, Hage, Boris, Lund, A. P., Ralph, T. C., Lam, P. K., Symul, T.

Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics 46, no. 10 (2013): 104009

We experimentally demonstrate the reconstruction of a photon number conditioned state without using a photon number discriminating detector. By using only phase randomized homodyne measurements, we reconstruct up to the three photon subtracted squeez

Externí odkaz: http://arxiv.org/abs/2107.12118

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Akademický článek

Design, FPGA-based Implementation and Performance of a Pseudo Random Number Generator of Chaotic Sequences

Autor: DRIDI, F., EL ASSAD, S., EL HADJ YOUSSEF, W., MACHHOUT, M., SAMHAT, A. E.

Publikováno v: Advances in Electrical and Computer Engineering, Vol 21, Iss 2, Pp 41-48 (2021)

Pseudo-Random Number Generator of Chaotic Sequences (PRNG-CS) has caught the attention in various security applications, especially for stream and block ciphering, steganography, and digital watermarking algorithms. Indeed, in all chaos-based crypt

Externí odkaz: https://doaj.org/article/19a194521f08489b9fdcc2c56e487f2e

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Maximization of Extractable Randomness in a Quantum Random-Number Generator

Autor: Haw, J. Y., Assad, S. M., Lance, A. M., Ng, N. H. Y., Sharma, V., Lam, P. K., Symul, T.

Publikováno v: Phys. Rev. Applied 3, 054004 (2015)

The generation of random numbers via quantum processes is an efficient and reliable method to obtain true indeterministic random numbers that are of vital importance to cryptographic communication and large-scale computer modeling. However, in realis

Externí odkaz: http://arxiv.org/abs/1411.4512

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Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth

Autor: Geng, J., Campbell, G. T., Bernu, J., Higginbottom, D., Sparkes, B. M., Assad, S. M., Zhang, W. P., Robins, N. P., Lam, P. K., Buchler, B. C.

We report on the delay of optical pulses using electromagnetically induced transparency in an ensemble of cold atoms with an optical depth exceeding 500. To identify the regimes in which four-wave mixing impacts on EIT behaviour, we conduct the exper

Externí odkaz: http://arxiv.org/abs/1408.2316

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Experimental Verification of Quantum Discord in Continuous-Variable States

Autor: Hosseini, S., Rahimi-Keshari, S., Haw, J. Y., Assad, S. M., Chrzanowski, H. M., Janousek, J., Symul, T., Ralph, T. C., Lam, P. K.

Publikováno v: J. Phys. B: At. Mol. Opt. Phys. 47(2014)025503

We introduce a simple and efficient technique to verify quantum discord in unknown Gaussian states and a certain class of non-Gaussian states. We show that any separation in the peaks of the marginal distributions of one subsystem conditioned on two

Externí odkaz: http://arxiv.org/abs/1310.6796

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Real time demonstration of high bitrate quantum random number generation with coherent laser light

Autor: Symul, T., Assad, S. M., Lam, P. K.

Publikováno v: Appl. Phys. Lett. 98, 231103 (2011)

We present a random number generation scheme that uses broadband measurements of the vacuum field contained in the radio-frequency sidebands of a single-mode laser. Even though the measurements may contain technical noise, we show that suitable algor

Externí odkaz: http://arxiv.org/abs/1107.4438

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