Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Pezzé, Luca"'
Using a random matrix approach, combined with the ergodicity hypothesis, we derive an analytical expression for the time-averaged quantum Fisher information (QFI) that applies to all quantum chaotic systems governed by Dyson's ensembles. Our approach
Externí odkaz:
http://arxiv.org/abs/2407.11822
Autor:
Pezzè, Luca, Smerzi, Augusto
We study the multiparameter sensitivity bounds of a sensor made by an array of $d$ spatially-distributed Mach-Zehnder interferometers (MZIs). A generic single non-classical state is mixed with $d-1$ vacuums to create a $d$-modes entangled state, each
Externí odkaz:
http://arxiv.org/abs/2405.18404
A central task in quantum metrology is to exploit quantum correlations to outperform classical sensitivity limits. Metrologically useful entanglement is identified when the quantum Fisher information (QFI) exceeds a separability bound for a given par
Externí odkaz:
http://arxiv.org/abs/2405.15703
Autor:
Allemand, Maxime, Jannin, Raphael, Dupuy, Géraud, Bureik, Jan-Philipp, Pezzè, Luca, Boiron, Denis, Clément, David
Tomography of single-particle-resolved detectors is of primary importance for characterizing particle correlations with applications in quantum metrology, quantum simulation and quantum computing. However, it is a non-trivial task in practice due to
Externí odkaz:
http://arxiv.org/abs/2405.01211
Autor:
Pezzè, Luca, Xhani, Klejdja, Daix, Cyprien, Grani, Nicola, Donelli, Beatrice, Scazza, Francesco, Hernandez-Rajkov, Diego, Kwon, Woo Jin, Del Pace, Giulia, Roati, Giacomo
Arrays of Josephson junctions are at the forefront of research on quantum circuitry for quantum computing, simulation and metrology. They provide a testing bed for exploring a variety of fundamental physical effects where macroscopic phase coherence,
Externí odkaz:
http://arxiv.org/abs/2311.05523
Autor:
Biagioni, Giulio, Antolini, Nicolò, Donelli, Beatrice, Pezzè, Luca, Smerzi, Augusto, Fattori, Marco, Fioretti, Andrea, Gabbanini, Carlo, Inguscio, Massimo, Tanzi, Luca, Modugno, Giovanni
Recently, a new category of superfluids and superconductors has been discovered in various systems. These could be linked to the idea of a supersolid phase, featuring a macroscopic wavefunction with spatial modulation resulting from simultaneous, spo
Externí odkaz:
http://arxiv.org/abs/2311.04757
Autor:
Hetzel, Mareike, Pezzè, Luca, Pür, Cebrail, Quensen, Martin, Hüper, Andreas, Geng, Jiao, Kruse, Jens, Santos, Luis, Ertmer, Wolfgang, Smerzi, Augusto, Klempt, Carsten
The high-fidelity analysis of many-body quantum states of indistinguishable atoms requires the accurate counting of atoms. Here we report the tomographic reconstruction of an atom-number-resolving detector. The tomography is performed with an ultraco
Externí odkaz:
http://arxiv.org/abs/2207.01270
Autor:
Gebhart, Valentin, Santagati, Raffaele, Gentile, Antonio Andrea, Gauger, Erik M., Craig, David, Ares, Natalia, Banchi, Leonardo, Marquardt, Florian, Pezze', Luca, Bonato, Cristian
Publikováno v:
Nat. Rev. Phys. (2023)
The future development of quantum technologies relies on creating and manipulating quantum systems of increasing complexity, with key applications in computation, simulation and sensing. This poses severe challenges in the efficient control, calibrat
Externí odkaz:
http://arxiv.org/abs/2207.00298
Publikováno v:
Quantum 7, 965 (2023)
Thanks to common-mode noise rejection, differential configurations are crucial for realistic applications of phase and frequency estimation with atom interferometers. Currently, differential protocols with uncorrelated particles and mode-separable se
Externí odkaz:
http://arxiv.org/abs/2205.09698
Autor:
Pezzè, Luca, Lepori, Luca
Identifying and characterizing quantum phases of matter in the presence of long range correlations and/or spatial disorder is, generally, a challenging and relevant task. Here, we study a generalization of the Kiteav chain with variable-range pairing
Externí odkaz:
http://arxiv.org/abs/2204.02209