A5048623729- Advanced X-ray Imaging Techniques
- Quantum Information and Cryptography
- Digital Holography and Microscopy
- Quantum Mechanics and Applications
- Quantum Computing Algorithms and Architecture
- Mechanical and Optical Resonators
- Near-Field Optical Microscopy
- Random lasers and scattering media
- Laser-Plasma Interactions and Diagnostics
- Semiconductor materials and devices
- Orbital Angular Momentum in Optics
- Advanced Fiber Laser Technologies
- Atomic and Subatomic Physics Research
- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Particle Accelerators and Free-Electron Lasers
- Spectroscopy and Quantum Chemical Studies
- Advanced Data Storage Technologies
- Force Microscopy Techniques and Applications
- Advanced Fluorescence Microscopy Techniques
Istituto Nazionale di Ricerca Metrologica
2023
University of Nottingham
2016-2019
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Salerno
2016
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2016
University of Salerno
2016
Quantifying coherence is an essential endeavour for both quantum foundations and technologies. Here the robustness of defined proven a full monotone in context recently introduced resource theories coherence. The measure shown to be observable, as it can recast expectation value witness operator any state. evaluated analytically on relevant classes states, efficient semidefinite program that computes general states given. An operational interpretation finally provided: quantifies advantage...
Quantum states may exhibit asymmetry with respect to the action of a given group. Such an can be considered as resource in applications such quantum metrology, and it is concept that encompasses coherence special case. We introduce explicitly study robustness asymmetry, quantifier we prove have many attractive properties, including efficient numerical computability via semidefinite programming, operational interpretation channel discrimination context. also notion witnesses, whose...
Quantum entanglement and squeezing have significantly improved phase estimation imaging in interferometric settings beyond the classical limits. However, for a wide class of non-interferometric imaging/retrieval methods vastly used domain, e.g., ptychography diffractive imaging, demonstration quantum advantage is still missing. Here, we fill this gap by exploiting to enhance pure object setting, only measuring effect on free-propagating field. This method, based so-called "transport...
We investigate the localization of two incoherent point sources with arbitrary angular and axial separations in paraxial approximation. By using quantum metrology techniques, we show that a simultaneous estimation is achievable by single measurement, precision saturating ultimate limit stemming from Cram\'er-Rao bound. Such not degraded subwavelength regime, thus overcoming traditional limitations classical direct imaging derived Rayleigh's criterion. Our results are qualitatively...
This work demonstrates experimentally that the advantage gained in sensing using quantum photonic resources can be sustained, and even amplified, through complex classical post-processing aimed at extracting relevant features. Despite very different architectures of algorithms tested here, classification performance appears to robust qualitatively consistent. Thus results argue for widespread use technologies, any field deals with pattern recognition large datasets.
Unifying quantum theory and general relativity is the holy grail of contemporary physics. Nonetheless, lack experimental evidence driving this process led to a plethora mathematical models with substantial impossibility discriminating among them or even establishing if gravity really needs be quantized if, vice versa, mechanics must "gravitized" at some scale. Recently, it has been proposed that observation generation entanglement by gravitational interaction, could represent breakthrough...
We exploit quantum correlations to enhance quantitative phase retrieval of an object in a non-interferometric setting, only measuring the propagated intensity pattern after interaction with
We propose a technique which exploits entanglement to enhance quantitative phase retrieval of an object in non-interferometric setting only measuring the propagated intensity pattern after interaction with
Recently, it has been proposed a new method [arXiv:2405.21029] to detect quantum gravity effects, based on generating gravitational entanglement between two nano-diamonds with Nitrogen-Vacancy defects, in magnetically trapped configuration. Here we analyse detail the experimental setup, particular focus implementing detection of gravitationally-induced using an optical readout measuring position and its complementary basis. We also summarise some key theoretical ideas which this scheme is based.
The challenge of pattern recognition is to invoke a strategy that can accurately extract features dataset and classify its samples. In realistic scenarios this may be physical system from which we want retrieve information, such as in the readout optical classical memories. theoretical experimental development quantum reading has demonstrated memories dramatically enhanced through use resources (namely entangled input-states) over best strategies. However, practicality advantage hinges upon...
Quantum entanglement and squeezing have significantly improved phase estimation imaging in interferometric settings beyond the classical limits. However, for a wide class of non-interferometric imaging/retrieval methods vastly used domain e.g., ptychography diffractive imaging, demonstration quantum advantage is still missing. Here, we fill this gap by exploiting to enhance pure object setting, only measuring effect on free-propagating field. This method, based so-called "transport intensity...