Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Virally, Stephane"'
Autor:
Becerra-Deana, Rodrigo Itzamná, Ramadier, Guillaume, de Sivry-Houle, Martin Poinsinet, Maltais-Tariant, Raphael, Virally, Stéphane, Boudoux, Caroline, Godbout, Nicolas
The design space for the fabrication of photonic lanterns is vast, which allows for a great diversity of designs but also complicates finding the right parameters for a given component. Coupled-mode theory is a great tool to sort through the paramete
Externí odkaz:
http://arxiv.org/abs/2411.02182
Autor:
Becerra-Deana, Rodrigo Itzamná, de Sivry-Houle, Martin Poinsinet, Virally, Stéphane, Boudoux, Caroline, Godbout, Nicolas
We present the design, fabrication, and characterization of mode-selective photonic lanterns using double-clad fibers. Here, we exploited several custom-pulled double-clad fibers to achieve the symmetry break required to excite higher-order modes. Th
Externí odkaz:
http://arxiv.org/abs/2410.23403
We propose a time-resolved optical measurement scheme for sampling transient charge and spin currents in a bulk centrosymmetric semiconductor. The technique relies on emission of second harmonic light triggered by a pulsed below-gap optical excitatio
Externí odkaz:
http://arxiv.org/abs/2406.10397
We develop the theoretical tools necessary to promote electro-optic sampling to a time-domain quantum tomography technique. Our proposed framework implements detection of the time evolution of both the electric-field of a propagating electromagnetic
Externí odkaz:
http://arxiv.org/abs/2307.13088
Publikováno v:
Quantum Reports 2023, 5(1), 52-77
Quantum key distribution (QKD) protocols aim at allowing two parties to generate a secret shared key. While many QKD protocols have been proven unconditionally secure in theory, practical security analyses of experimental QKD implementations typicall
Externí odkaz:
http://arxiv.org/abs/2208.13754
Autor:
Gündoğdu, Sinan, Virally, Stéphane, Scaglia, Marco, Seletskiy, Denis V., Moskalenko, Andrey S.
We propose and analyze a new time-domain method for subcycle metrology of quantum electric fields using a combination of a 3rd order nonlinear optical process and homodyne detection with a local oscillator (LO) field. The new method enables isolation
Externí odkaz:
http://arxiv.org/abs/2201.10487
Employing electro-optic sampling (EOS) with ultrashort probe pulses, recent experiments showed direct measurements of quantum vacuum fields and their correlations on subcycle timescales. Here, we propose a quantum-enhanced EOS where photon-number ent
Externí odkaz:
http://arxiv.org/abs/2106.04402
Parametric amplifiers are known to squeeze the vacuum state of the electromagnetic field, which results in predictable statistics of the photocounts at their output. However, recent theoretical work arXiv:1112.4159 predicts a very different statistic
Externí odkaz:
http://arxiv.org/abs/2010.03014
Autor:
Virally, Stéphane, Reulet, Bertrand
Publikováno v:
Phys. Rev. A 100, 023833 (2019)
Choosing the right first quantization basis in quantum optics is critical for the interpretation of experimental results. The usual frequency basis is, for instance, inappropriate for short, subcycle waveforms. Deriving first quantization in time dom
Externí odkaz:
http://arxiv.org/abs/1810.06932
The quantum behaviour of the electromagnetic field in mesoscopic elements is intimately linked to the quantization of the charge. In order to probe nonclassical aspects of the field in those elements, it is essential that thermal noise be reduced to
Externí odkaz:
http://arxiv.org/abs/1804.10720