Zobrazeno 1 - 10
of 1 664
pro vyhledávání: '"Leuchs G."'
We investigate the squeezing of ultrashort pulses using self-induced transparency in a mercury-filled hollow-core photonic crystal fiber. Our focus is on quadrature squeezing at low mercury vapor pressures, with atoms near resonance on the $^3{\rm D}
Externí odkaz:
http://arxiv.org/abs/2410.11039
Autor:
Najafabadi, M. S., Sánchez-Soto, L. L., Corney, J. F., Kalinin, N., Sorokin, A. A., Leuchs, G.
Publikováno v:
Phys. Rev. Research ( 2024)
We study the quantum squeezing produced in self-induced transparency in a photonic crystal fiber by performing a fully quantum simulation based on the positive $P$ representation. The amplitude squeezing depends on the area of the initial pulse: when
Externí odkaz:
http://arxiv.org/abs/2311.02032
Publikováno v:
Quantum 8, 1363 (2024)
Coherent-state representations are a standard tool to deal with continuous-variable systems, as they allow one to efficiently visualize quantum states in phase space. Here, we work out an alternative basis consisting of monomials on the basic observa
Externí odkaz:
http://arxiv.org/abs/2309.10042
Autor:
Butt, M. A. T., Roth, P., Wong, G. K. L., Frosz, M. H., Sanchez-Soto, L. L., Anashkina, E. A., Andrianov, A. V., Banzer, P., Russell, P. S. J., Leuchs, G.
Polarization-preserving fibers maintain the two polarization states of an orthogonal basis. Quantum communication, however, requires sending at least two nonorthogonal states and these cannot both be preserved. We present a new scheme that allows for
Externí odkaz:
http://arxiv.org/abs/2305.11220
Autor:
Eriksson, M., Goldberg, A. Z., Hiekkamäki, M., Bouchard, F., Leuchs, G., Fickler, R., Sanchez-Soto, L. L.
Publikováno v:
Phys. Rev. Applied 20, 024052 (2023)
We report an experiment estimating the three parameters of a general rotation. The scheme uses quantum states attaining the ultimate precision dictated by the quantum Cram\'er-Rao bound. We realize the states experimentally using the orbital angular
Externí odkaz:
http://arxiv.org/abs/2301.10265
Despite the indisputable merits of the Wigner phase-space formulation, it has not been widely explored for systems with SU(1,1) symmetry, as a simple operational definition of the Wigner function has proved elusive in this case. We capitalize on the
Externí odkaz:
http://arxiv.org/abs/2301.08127
Autor:
Andrianov, A. V., Kalinin, N. A., Sorokin, A. A., Anashkina, E. A., Sanchez-Soto, L. L., Corney, J. F., Leuchs, G.
Publikováno v:
Optics Express 31, 765-773 (2023)
Bright squeezed light can be generated in optical fibers utilizing the Kerr effect for ultrashort laser pulses. However, pulse propagation in a fiber is subject to nonconservative effects that deteriorate the squeezing. Here, we analyze two-mode pola
Externí odkaz:
http://arxiv.org/abs/2301.02454
We address the response of a Fabry-Perot interferometer to a monochromatic point source. We calculate the anticaustics (that is, the virtual wavefronts of null path difference) resulting from the successive internal reflections occurring in the syste
Externí odkaz:
http://arxiv.org/abs/2210.10078
Even the most classical states are still governed by quantum theory. A fantastic array of physical systems can be described by their Majorana constellations of points on the surface of a sphere, where concentrated constellations and highly symmetric
Externí odkaz:
http://arxiv.org/abs/2112.01612
Autor:
Bashinov, A. V., Efimenko, E. S., Muraviev, A. A., Volokitin, V. D., Meyerov, I. B., Leuchs, G., Sergeev, A. M., Kim, A. V.
In studies of interaction of matter with laser fields of extreme intensity there are two limiting cases of a multi-beam setup maximizing either the electric field or the magnetic field. In this work attention is paid to the optimal configuration of l
Externí odkaz:
http://arxiv.org/abs/2110.13851