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20052026
most citedAn atomic clock with instability

821 citations

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150 papers · 1 filter

quant-ph2025★ 2 cited

Reply to "Comment(s) to "Consequences of the single-pair measurement of the Bell parameter""

Marco Genovese, Fabrizio Piacentini

We reply to the comments made by M. Kupczynski and J. P. Lambare on our recent paper titled ''Consequences of the single-pair measurement of the Bell parameter'' [Phys. Rev. A 111,…

quant-ph2025

Programmable Microwave Cluster States via Josephson Metamaterials

A. Alocco, A. Celotto, E. Palumbo +5

Cluster states are a fundamental resource for continuous-variable quantum computing, enabling measurement-based protocols that can scale beyond the limitations of qubit-based archi…

quant-ph2025★ 1 cited

Higher-Order Adiabatic Elimination in Atom-Cavity Systems and Its Impact on Spin-Squeezing Generation

Stefano Giaccari, Giulia Dellea, Marco G. Genoni +1

Spin-squeezed states are metrologically useful quantum states where entanglement allows for enhanced sensing with respect to the standard quantum limit. Key challenges include the…

quant-ph2025

Towards Quantifying Two-Mode Correlation Linewidths in Quantum Circuits

Alessandro Alocco, Andrea Celotto, Luca Fasolo +7

This paper aims to quantify the linewidth of two-mode correlations in Traveling Wave Parametric Amplifiers (TWPAs). Artifacts induced by data acquisition and processing, such as wi…

quant-ph2025

The ultimate bounds to precision of atomic clock frequency measurement techniques

Stefano Olivares, Salvatore Micalizio, Matteo G. A. Paris

We investigate the ultimate quantum limits to the achievable uncertainty in the estimation of the transition frequency between two atomic levels. We focus on Rabi, Ramsey, and cohe…

quant-ph2025★ 9 cited

Experimental Test of Nonlocality Limits from Relativistic Independence

Francesco Atzori, Salvatore Virzì, Enrico Rebufello +9

Quantum correlations, like entanglement, represent the characteristic trait of quantum mechanics, and pose essential issues and challenges to the interpretation of this pillar of m…

quant-ph2024★ 4 cited

QKD protected fiber-based infrastructure for time dissemination

Alice Meda, Alberto Mura, Salvatore Virzì +10

In this study, we demonstrate the possibility to protect, with Quantum Key Distribution (QKD), a critical infrastructure as the fiber-based one used for time and frequency (TF) dis…

quant-ph2024

Interplay between dressed and strong-axial-field states in Nitrogen-Vacancy centers for quantum sensing and computation

G. Zanelli, E. Moreva, E. Bernardi +7

The Nitrogen-Vacancy (NV) center in diamond is an intriguing electronic spin system with applications in quantum radiometry, sensing and computation. In those experiments, a bias m…

quant-ph2024★ 6 cited

Consequences of the single-pair measurement of the Bell parameter

Marco Genovese, Fabrizio Piacentini

Bell inequalities represent a milestone for contemporary Physics, both for quantum foundations investigation and technological applications (e.g., quantum communication and entangl…

quant-ph2024★ 7 cited

Quantum Target Ranging for LiDAR

Giuseppe Ortolano, Ivano Ruo-Berchera

We investigate Quantum Target Ranging in the context of multi-hypothesis testing and its applicability to real-world LiDAR systems. First, we demonstrate that ranging is generally…

quant-ph2024★ 6 cited

Detection Efficiency Characterization for Free-Space Single-Photon Detectors: Measurement Facility and Wavelength-Dependence Investigation

Salvatore Virzì, Alice Meda, Elisa Redolfi +4

In this paper, we present a new experimental apparatus for the measurement of the detection efficiency of free-space single-photon detectors based on the substitution method. For t…

quant-ph2024★ 3 cited

Development of KI-TWPAs for the DARTWARS project

Felix Ahrens, Elena Ferri, Guerino Avallone +40

Noise at the quantum limit over a broad bandwidth is a fundamental requirement for future cryogenic experiments for neutrino mass measurements, dark matter searches and Cosmic Micr…

quant-ph2023★ 16 cited

Phase Noise in Real-World Twin-Field Quantum Key Distribution

Gianluca Bertaina, Cecilia Clivati, Simone Donadello +9

The impact of noise sources in real-world implementations of Twin-Field Quantum Key Distribution (TF-QKD) protocols is investigated, focusing on phase noise from photon sources and…

quant-ph2023★ 5 cited

Creation of NV centers in diamond under 155 MeV electron irradiation

Elena Losero, Valentin Goblot, Yuchun Zhu +4

Single-crystal diamond substrates presenting a high concentration of negatively charged nitrogen-vacancy centers (NV-) are on high demand for the development of optically pumped so…

quant-ph2023★ 52 cited

Quantum enhanced non-interferometric quantitative phase imaging

Giuseppe Ortolano, Alberto Paniate, Pauline Boucher +5

Quantum entanglement and squeezing have significantly improved phase estimation and imaging in interferometric settings beyond the classical limits. However, for a wide class of no…

quant-ph2023★ 21 cited

Single-pair measurement of the Bell parameter

Salvatore Virzì, Enrico Rebufello, Francesco Atzori +10

Bell inequalities are one of the cornerstones of quantum foundations, and fundamental tools for quantum technologies. Recently, the scientific community worldwide has put a lot of…

quant-ph2022★ 5 cited

Mode structure reconstruction by detected and undetected light

Laura T. Knoll, Giulia Petrini, Fabrizio Piacentini +5

We introduce a novel technique for the reconstruction of multimode optical fields, based on simultaneously exploiting both the generalized Glauber's -order correlation func…

quant-ph2022★ 1 cited

Sensing microscopic noise events by frequent quantum measurements

Salvatore Virzì, Laura T. Knoll, Alessio Avella +8

We propose and experimentally demonstrate a general method allowing us to unravel microscopic noise events that affect a continuous quantum variable. Such unraveling is achieved by…

quant-ph2022★ 8 cited

Progress in the development of a KITWPA for the DARTWARS project

M. Borghesi, C. Barone, S. Capelli +38

DARTWARS (Detector Array Readout with Traveling Wave AmplifieRS) is a three years project that aims to develop high-performing innovative Traveling Wave Parametric Amplifiers (TWPA…

quant-ph2022★ 11 cited

Ultra low noise readout with travelling wave parametric amplifiers: the DARTWARS project

A. Rettaroli, C. Barone, M. Borghesi +38

The DARTWARS project has the goal of developing high-performing innovative travelling wave parametric amplifiers with high gain, large bandwidth, high saturation power, and nearly…

quant-ph2022★ 53 cited

Towards European Standards for Quantum Technologies

O. van Deventer, N. Spethmann, M. Loeffler +21

The Second Quantum Revolution facilitates the engineering of new classes of sensors, communication technologies, and computers with unprecedented capabilities. Supply chains for qu…

quant-ph2022★ 6 cited

Quantum readout of imperfect classical data

Giuseppe Ortolano, Ivano Ruo-Berchera

The encoding of classical data in a physical support can be done up to some level of accuracy due to errors and the imperfection of the writing process. Moreover, some degradation…

quant-ph2021★ 8 cited

Unexpected detection rate dependence of the intrinsic detection efficiency in single-photon detectors based on avalanche diodes

Sebastian M. F. Raupach, Ivo Pietro Degiovanni, Hristina Georgieva +6

Single-photon detectors are a pivotal component in photonic quantum technologies. A precise and comprehensive calibration of the intrinsic detection efficiency is of utmost importa…

quant-ph2021

Spectral emission dependence of tin-vacancy centers in diamond from thermal processing and chemical functionalization

Emilio Corte, Selene Sachero, Sviatoslav Ditalia Tchernij +9

We report a systematic photoluminescence (PL) investigation of the spectral emission properties of individual optical defects fabricated in diamond upon ion implantation and anneal…