Zobrazeno 1 - 10
of 440
pro vyhledávání: '"Nikolopoulos, G."'
Publikováno v:
EPL, 129 (2020) 37003
We study a two-species mixture of exciton-polaritons with self- and cross-interaction nonlinearities in a double well structure, in the presence of relaxation and continuous pumping. We identify the conditions that render the system parity-time ($\ma
Externí odkaz:
http://arxiv.org/abs/1908.00851
Publikováno v:
Phys. Rev. A 98, 012304 (2018)
We propose a protocol for state transfer and entanglement generation between two distant spin qubits (sender and receiver) that have different energies. The two qubits are permanently coupled to a far off-resonant spin-chain, and the qubit of the sen
Externí odkaz:
http://arxiv.org/abs/1806.05122
Akademický článek
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Autor:
Nikolopoulos, G. M., Lambropoulos, P.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 47 (2014) 115001
We present a rather elaborate theoretical model describing the dynamics of Neon under radiation of photon energies $\sim 93$ eV and pulse duration in the range of 15 fs, within the framework of Lowest non-vanishing Order of Perturbation Theory (LOPT)
Externí odkaz:
http://arxiv.org/abs/1402.1565
Autor:
Lambropoulos, P., Nikolopoulos, G. M.
Publikováno v:
Eur. Phys. J. Special Topics 222, 2067 (2013)
We review the main aspects of multiple photoionization processes in atoms exposed to intense, short wavelength radiation. The main focus is the theoretical framework for the description of such processes as well as the conditions under which direct m
Externí odkaz:
http://arxiv.org/abs/1401.4975
Autor:
Nikolopoulos, G M, Lambropoulos, P
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 46, 164010 (2013)
Motivated by recent experiments pertaining to the interaction of weak SASE-FEL pulses with atoms and molecules, we investigate the conditions under which such interactions can be described in the framework of a simple phase-diffusion model with decor
Externí odkaz:
http://arxiv.org/abs/1401.4963
Autor:
Nikolopoulos, G. M., Lambropoulos, P.
Publikováno v:
Phys. Rev. A 86, 033420 (2012)
We study the effects of field fluctuations on the total yields of Auger electrons, obtained in the excitation of neutral atoms to a core-excited state by means of short-wavelength free-electron-laser pulses. Beginning with a self-contained analysis o
Externí odkaz:
http://arxiv.org/abs/1209.2231
Publikováno v:
Phys. Rev. A 85, 062319 (2012)
We study theoretically the transfer of quantum information along bends in two-dimensional discrete lattices. Our analysis shows that the fidelity of the transfer decreases considerably, as a result of interactions in the neighbourhood of the bend. It
Externí odkaz:
http://arxiv.org/abs/1206.2256
Publikováno v:
Phys. Rev. A 85, 022342 (2012)
Exploring the symmetries underlying a previously proposed encryption scheme which relies on single-qubit rotations, we derive an improved upper bound on the maximum information that an eavesdropper might extract from all the available copies of the p
Externí odkaz:
http://arxiv.org/abs/1202.3921
Publikováno v:
Phys. Rev. A 83, 021407(R) (2011)
We address the concept of direct multiphoton multiple ionization in atoms exposed to intense, short wavelength radiation and explore the conditions under which such processes dominate over the sequential. Their contribution is shown to be quite robus
Externí odkaz:
http://arxiv.org/abs/1102.5203