Zobrazeno 1 - 10
of 1 044
pro vyhledávání: '"Hradil, P."'
Autor:
Bhattacharjee, Abhinandan, Folge, Patrick, Serino, Laura, Řeháček, Jaroslav, Hradil, Zdeněk, Silberhorn, Christine, Brecht, Benjamin
The characterization of the complex spectral amplitude that is, the spectrum and spectral phase, of single-photon-level light fields is a crucial capability for modern photonic quantum technologies. Since established pulse characterisation techniques
Externí odkaz:
http://arxiv.org/abs/2408.12306
The quantum Cram\'er-Rao bound for the joint estimation of the centroid and the separation between two incoherent point sources cannot be saturated. As such, the optimal measurements for extracting maximal information about both at the same time are
Externí odkaz:
http://arxiv.org/abs/2406.17009
The quantum rotor represents, after the harmonic oscillator, the next obvious quantum system to study the complementary pair of variables: the angular momentum and the unitary shift operator in angular momentum. Proper quantification of uncertainties
Externí odkaz:
http://arxiv.org/abs/2403.02498
Autor:
Peterek, M., Paur, M., Vitek, M., Koutny, D., Stoklasa, B., Motka, L., Hradil, Z., Rehacek, J., Sanchez-Soto, L. L.
Enhancing the ability to resolve axial details is crucial in three-dimensional optical imaging. We provide experimental evidence showcasing the ultimate precision achievable in axial localization using vortex beams. For Laguerre-Gauss (LG) beams, thi
Externí odkaz:
http://arxiv.org/abs/2310.19908
We revisit the application of neural networks techniques to quantum state tomography. We confirm that the positivity constraint can be successfully implemented with trained networks that convert outputs from standard feed-forward neural networks to v
Externí odkaz:
http://arxiv.org/abs/2206.06736
Reaching ultimate performance of quantum technologies requires the use of detection at quantum limits and access to all resources of the underlying physical system. We establish a full quantum analogy between the pair of angular momentum and exponent
Externí odkaz:
http://arxiv.org/abs/2201.02231
We show that quantum state tomography with perfect knowledge of the measurement apparatus proves to be, in some instances, inferior to strategies discarding all information about the measurement at hand, as in the case of data pattern tomography. In
Externí odkaz:
http://arxiv.org/abs/2106.11850
Autor:
Abbattista, Cristoforo, Amoruso, Leonardo, Burri, Samuel, Charbon, Edoardo, Di Lena, Francesco, Garuccio, Augusto, Giannella, Davide, Hradil, Zdenek, Iacobellis, Michele, Massaro, Gianlorenzo, Mos, Paul, Motka, Libor, Paur, Martin, Pepe, Francesco V., Peterek, Michal, Petrelli, Isabella, Rehacek, Jaroslav, Santoro, Francesca, Scattarella, Francesco, Ulku, Arin, Vasiukov, Sergii, Wayne, Michael, D'Angelo, Milena, Bruschini, Claudio, Ieronymaki, Maria, Stoklasa, Bohumil
We review the advancement of the research toward the design and implementation of quantum plenoptic cameras, radically novel 3D imaging devices that exploit both momentum-position entanglement and photon-number correlations to provide the typical ref
Externí odkaz:
http://arxiv.org/abs/2106.07826
Autor:
De, Syamsundar, Gil-Lopez, Jano, Brecht, Benjamin, Silberhorn, Christine, Sanchez-Soto, Luis L., Hradil, Z., Rehacek, J.
Publikováno v:
Phys. Rev. Research 3, 033082 (2021)
Measuring small separations between two optical sources, either in space or in time, constitute an important metrological challenge as standard intensity-only measurements fail for vanishing separations. Contrarily, it has been established that appro
Externí odkaz:
http://arxiv.org/abs/2103.10833
The resolution of separation of two elementary signals forming a partially coherent superposition, defined by quantum Fisher information and normalised with respect to detection probabilities, is always limited by the resolution of incoherent mixture
Externí odkaz:
http://arxiv.org/abs/2103.07225