Zobrazeno 1 - 10
of 191
pro vyhledávání: '"Gessner, Manuel"'
Publikováno v:
Comptes Rendus. Physique, Vol 23, Iss G1, Pp 1-26 (2022)
In an ensemble of two-level atoms that can be described in terms of a collective spin, entangled states can be used to enhance the sensitivity of interferometric precision measurements. While non-Gaussian spin states can produce larger quantum enhanc
Externí odkaz:
https://doaj.org/article/fbef74ab6aaf4f14a37ac3e0cad292c8
Autor:
Hsieh, Chung-Yun, Gessner, Manuel
We provide a thermodynamic task to certify the general quantum resources of both states and channels via work extraction, showing that general quantum resources provide advantages in work extraction. Such work extraction tasks can be further applied
Externí odkaz:
http://arxiv.org/abs/2403.18753
Bounding the optimal precision in parameter estimation tasks is of central importance for technological applications. In the regime of a small number of measurements, or that of low signal-to-noise ratios, the meaning of common frequentist bounds suc
Externí odkaz:
http://arxiv.org/abs/2402.14495
Autor:
Centrone, Federico, Gessner, Manuel
We show how quantum correlations allow us to break the local speed limits of physical processes using only local measurements and classical communication between two parties that share an entangled state. Inequalities that bound the minimal time of e
Externí odkaz:
http://arxiv.org/abs/2401.04599
Autor:
Barral, David, Isoard, Mathieu, Sorelli, Giacomo, Gessner, Manuel, Treps, Nicolas, Walschaers, Mattia
Entanglement and non-Gaussianity are physical resources that are essential for a large number of quantum-optics protocols. Non-Gaussian entanglement is indispensable for quantum-computing advantage and outperforms its Gaussian counterparts in a numbe
Externí odkaz:
http://arxiv.org/abs/2301.03909
Autor:
Linowski, Tomasz, Schlichtholz, Konrad, Sorelli, Giacomo, Gessner, Manuel, Walschaers, Mattia, Treps, Nicolas, Rudnicki, Łukasz
Publikováno v:
New J. Phys. 25, 103050 (2023)
Superresolution is one of the key issues at the crossroads of contemporary quantum optics and metrology. Recently, it was shown that for an idealized case of two balanced sources, spatial mode demultiplexing (SPADE) achieves resolution better than di
Externí odkaz:
http://arxiv.org/abs/2211.09157
We show that a significant quantum gain corresponding to squeezed or over-squeezed spin states can be obtained in multiparameter estimation by measuring the Hadamard coefficients of a 1D or 2D signal. The physical platform we consider consists of two
Externí odkaz:
http://arxiv.org/abs/2208.00640
Publikováno v:
Phys. Rev. Research 4, L032022 (2022)
We determine analytically the quantum Cram\'er-Rao bound for the estimation of the separation between two point sources in arbitrary Gaussian states. Our analytical expression is valid for arbitrary sources brightness, and it allows to determine how
Externí odkaz:
http://arxiv.org/abs/2205.04258
Quantum optical metrology aims to identify ultimate sensitivity bounds for the estimation of parameters encoded into quantum states of the electromagnetic field. In many practical applications, including imaging, microscopy, and remote sensing, the p
Externí odkaz:
http://arxiv.org/abs/2202.10355