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pro vyhledávání: '"Álvarez, Juan Rafael"'
Effective models to describe the dynamics of an open cavity have been extensively discussed in the literature. In many of these models the cavity leakage to the outside is treated as a loss introduced phenomenologically. In contrast to these, we focu
Externí odkaz:
http://arxiv.org/abs/2410.06379
Autor:
Sabogal, Daniel R., Urrego, Daniel F., Álvarez, Juan Rafael, Herrera, Andrés F., Torres, Juan P., Valencia, Alejandra
We present a theoretical and experimental study of a controllable decoherence-assisted quantum key distribution scheme. Our method is based on the possibility of introducing controllable decoherence to polarization qubits using the spatial degree of
Externí odkaz:
http://arxiv.org/abs/2405.20153
In this work, we present an educational activity aimed at measuring the Wigner distribution functions of quantum states of light in the undergraduate laboratory. This project was conceived by students from various courses within the physics undergrad
Externí odkaz:
http://arxiv.org/abs/2310.17525
Photonic qubits play an instrumental role in the development of advanced quantum technologies, including quantum networking, boson sampling and measurement based quantum computing. A promising framework for the deterministic production of indistingui
Externí odkaz:
http://arxiv.org/abs/2305.04899
Autor:
Cordero, Oscar, Villegas, Arturo, Alvarez, Juan-Rafael, León-Montiel, Roberto de J., Passos, M. H. M., Torres, Juan P.
Publikováno v:
Phys. Rev. A 104, 042401 (2021)
The concept of quantum discord aims at unveiling quantum correlations that go beyond those described by entanglement. Its original formulation [J. Phys. A 34, 6899 (2001); Phys. Rev. Lett 88, 017901 (2002)] is difficult to compute even for the simple
Externí odkaz:
http://arxiv.org/abs/2107.14265
Autor:
Álvarez, Juan-Rafael, IJspeert, Mark, Barter, Oliver, Yuen, Ben, Barrett, Thomas D., Stuart, Dustin, Dilley, Jerome, Holleczek, Annemarie, Kuhn, Axel
In his 1935 Gedankenexperiment, Erwin Schr\"{o}dinger imagined a poisonous substance which has a 50% probability of being released, based on the decay of a radioactive atom. As such, the life of the cat and the state of the poison become entangled, a
Externí odkaz:
http://arxiv.org/abs/2106.09705
We evaluate the exact dipole coupling strength between a single emitter and the radiation field within an optical cavity, taking into account the effects of multilayer dielectric mirrors. Our model allows one to freely vary the resonance frequency of
Externí odkaz:
http://arxiv.org/abs/2009.07949
We demonstrate a quantum random number generator based on the random nature of the phase difference between two independent laser sources. The speed of random bit generation is determined by the photodetector bandwidth and the linewidth of the lasers
Externí odkaz:
http://arxiv.org/abs/1906.03763
Autor:
Urrego, Daniel F., Álvarez, Juan-Rafael, Calderón-Losada, Omar, Svozilík, Jiří, Nuñez, Mayerlin, Valencia, Alejandra
We present the experimental implementation and theoretical model of a controllable dephasing quantum channel using photonic systems. The channel is implemented by coupling the polarization and the spatial distribution of light, that play, in the pers
Externí odkaz:
http://arxiv.org/abs/1710.09848
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