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pro vyhledávání: '"Gisin N"'
It is expected that quantum computers would enable solving various problems that are beyond the capabilities of the most powerful current supercomputers, which are based on classical technologies. In the last three decades, advances in quantum comput
Externí odkaz:
http://arxiv.org/abs/2203.17181
Autor:
Cruzeiro, E. Zambrini, Gisin, N.
We study Bell scenarios with binary outcomes supplemented by one bit of classical communication. We develop a method to find facet inequalities for such scenarios even when direct facet enumeration is not possible, or at least difficult. Using this m
Externí odkaz:
http://arxiv.org/abs/1812.05107
Autor:
Cruzeiro, E. Zambrini, Gisin, N.
Publikováno v:
Phys. Rev. A 99, 022104 (2019)
We give the complete list of 175 facet Bell inequalities for the case where Alice and Bob each choose their measurements from a set of four binary outcome measurements. For each inequality we compute the maximum quantum violation for qubits, the resi
Externí odkaz:
http://arxiv.org/abs/1811.11820
Autor:
Monteiro, F., Verbanis, E., Vivoli, V. Caprara, Martin, A., Gisin, N., Zbinden, H., Thew, R. T.
Device-independent quantum key distribution (DI-QKD) represents one of the most fascinating challenges in quantum communication, exploiting concepts of fundamental physics, namely Bell tests of nonlocality, to ensure the security of a communication l
Externí odkaz:
http://arxiv.org/abs/1612.01802
Demonstration of EPR steering using single-photon path entanglement and displacement-based detection
Autor:
Guerreiro, T., Monteiro, F., Martin, A., Brask, J. B., Vértesi, T., Korzh, B., Caloz, M., Bussières, F., Verma, V. B., Lita, A. E., Mirin, R. P., Nam, S. W., Marsilli, F., Shaw, M. D., Gisin, N., Brunner, N., Zbinden, H., Thew, R. T.
Publikováno v:
Phys. Rev. Lett. 117, 070404 (2016)
We demonstrate the violation of an EPR steering inequality developed for single photon path entanglement with displacement-based detection. We use a high-rate source of heralded single-photon path-entangled states, combined with high-efficiency super
Externí odkaz:
http://arxiv.org/abs/1603.03589
Publikováno v:
J. Opt. Soc. Am. B 32, 2190 (2015)
In recent years, there has been an increased interest in the generation of superposition of coherent states with opposite phases, the so-called photonic Schrodinger-cat states. These experiments are very challenging and so far, cats involving small p
Externí odkaz:
http://arxiv.org/abs/1410.8421
Autor:
Vivoli, V. Caprara, Sekatski, P., Bancal, J. -D., Lim, C. C. W., Martin, A., Thew, R. T., Zbinden, H., Gisin, N., Sangouard, N.
Publikováno v:
New Journal of Physics 17 (2), 023023 (2015)
What is the most efficient way to generate random numbers device-independently using a photon pair source based on spontaneous parametric down conversion (SPDC)? We consider this question by comparing two implementations of a detection-loophole-free
Externí odkaz:
http://arxiv.org/abs/1409.8051
Autor:
Vivoli, V. Caprara, Sekatski, P., Bancal, J. -D., Lim, C. C. W., Christensen, B. G., Martin, A., Thew, R. T., Zbinden, H., Gisin, N., Sangouard, N.
Publikováno v:
Phys. Rev. A 91, 012107 (2015)
Motivated by very recent experiments, we consider a scenario "\`a la Bell" in which two protagonists test the Clauser-Horne-Shimony-Holt (CHSH) inequality using a photon-pair source based on spontaneous parametric down conversion and imperfect photon
Externí odkaz:
http://arxiv.org/abs/1405.1939