A5081487032- Diamond and Carbon-based Materials Research
- Quantum Information and Cryptography
- Quantum Mechanics and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Random lasers and scattering media
- Quantum optics and atomic interactions
- Quantum Computing Algorithms and Architecture
- Force Microscopy Techniques and Applications
- Atomic and Subatomic Physics Research
- High-pressure geophysics and materials
- Carbon Nanotubes in Composites
- Mechanical and Optical Resonators
- Advanced Fluorescence Microscopy Techniques
- Electronic and Structural Properties of Oxides
- Optical Coherence Tomography Applications
- Ion-surface interactions and analysis
- Lipid Membrane Structure and Behavior
- Thermal properties of materials
- Photoacoustic and Ultrasonic Imaging
- Near-Field Optical Microscopy
- Integrated Circuits and Semiconductor Failure Analysis
- Cosmology and Gravitation Theories
- Neural Networks and Reservoir Computing
- Metal and Thin Film Mechanics
- Heat Transfer and Boiling Studies
Istituto Nazionale di Ricerca Metrologica
2017-2025
École Polytechnique Fédérale de Lausanne
2021-2024
Czech Academy of Sciences, Institute of Physics
2022
Polytechnic University of Turin
2017-2019
In this review we present the potentialities and achievements of use non-classical photon number correlations in twin beams (TWB) states for many applications, ranging from imaging to metrology. Photon quantum regime are easy be produced rather robust against unavoidable experimental losses, noise some cases, if compared entanglement, where loosing one can completely compromise state its exploitable advantage. Here, will focus on enhanced protocols which only phase-insensitive intensity...
Monitoring neuronal activity with simultaneously high spatial and temporal resolution in living cell cultures is crucial to advance understanding of the development functioning our brain, gain further insights origin brain disorders. While it has been demonstrated that quantum sensing capabilities nitrogen-vacancy (NV) centers diamond allow real time detection action potentials from large neurons marine invertebrates, monitoring mammalian (presenting much smaller dimensions thus producing...
Loss measurements are at the base of spectroscopy and imaging, thus perme- ating all branches science, from chemistry biology to physics material science. However, quantum mechanics laws set ultimate limit sensitivity, constrained by probe mean energy. This can be main source uncertainty, for example when dealing with delicate system such as biological samples or photosensitive chemicals. It turns out that ordinary (clas- sical) beams, namely Poissonian photon number distribution,...
The final goal of quantum hypothesis testing is to achieve advantage over all possible classical strategies. In the protocol reading this achieved for information retrieval from an optical memory, whose generic cell stores a bit in two lossy channels. For protocol, we show, theoretically and experimentally, that obtained by practical photon-counting measurements combined with simple maximum-likelihood decision. particular, show receiver entangled two-mode squeezed vacuum source able...
Localized electronic spins in solid-state environments form versatile and robust platforms for quantum sensing, metrology information processing. With optically detected magnetic resonance (ODMR), it is possible to prepare readout highly coherent spin systems, up room temperature, with orders of magnitude enhanced sensitivities spatial resolutions compared induction-based techniques, allowing single manipulations. While ODMR was first observed organic molecules, many other systems have since...
In recent decades, nanodiamonds (NDs) have emerged as innovative nanotools for weak magnetic fields and small temperature variation sensing, especially in biological systems. At the basis of use NDs quantum sensors are nitrogen-vacancy center lattice defects, whose electronic structures influenced by surrounding environment can be probed optically detected resonance technique. Ideally, limiting NDs' size much possible is important to ensure higher biocompatibility provide spatial resolution....
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.
Quantum metrology deals with improving the resolution of instruments that are otherwise limited by shot noise and it is therefore a promising avenue for enabling scientific breakthroughs. The advantage can be even more striking when quantum enhancement combined correlation techniques among several devices. Here, we present realize interferometry scheme exploiting bipartite correlated states injected in two independent interferometers. outperforms classical analogues detecting faint signal...
One of the challenges quantum technologies is realising advantage, predicted for ideal systems, in real applications, which have to cope with decoherence and inefficiencies. In metrology, sub-shot-noise imaging (SSNI) sensing methods can provide genuine enhancement realistic situations. However, wide field SSNI schemes realized so far suffer a trade-off between resolution sensitivity gain over classical counterpart: small pixels or integrating area, are necessary achieve high resolution, but...
Quantum correlations become formidable tools for beating classical capacities of measurement. Preserving these advantages in practical systems, where experimental imperfections are unavoidable, is a challenge the utmost importance. Here we propose and realize quantum ghost imaging protocol stemming from differential imaging, scheme elaborated so far limit bright thermal light, particularly suitable relevant case faint or sparse objects. The extension toward regime represents an important...
We introduce a protocol addressing the conformance test problem, which consists in determining whether process under conforms to reference one. consider be characterized by set of end products it produces, is generated according given probability distribution. formulate problem context hypothesis testing and specific case objects can modeled as pure loss channels. demonstrate theoretically that simple quantum strategy, using readily available resources measurement schemes form two-mode...
Solid state spins in diamond, particular negatively charged nitrogen-vacancy centers (NV), are leading contenders the field of quantum sensing. While addressing single NVs offers nanoscale spatial resolution, many implementations benefit from using large ensembles to increase signal magnitude and therefore sensitivity. However, sensing with brings its own challenges given random orientation spin quantization axis within diamond crystal lattice. Here, we present an open source simulation tool...
<ns3:p>Nitrogen-vacancy (NV) centers in diamond have emerged as promising quantum sensors due to their highly coherent and optically addressable spin states with potential applications high-sensitivity magnetometry. Homogeneously addressing large ensembles of NV offers clear benefit terms sensing precision well fundamental studies collective effects. Such experiments require a spatially uniform, intense, broadband microwave field that can be difficult generate. Previous approaches, such...
Among all materials, mono-crystalline diamond has one of the highest measured thermal conductivities, with values above 2000 W/m/K at room temperature. This stems from momentum-conserving `normal' phonon-phonon scattering processes dominating over momentum-dissipating `Umklapp' processes, a feature that also suggests as an ideal platform to experimentally investigate phonon heat transport phenomena violate Fourier's law. Here, we introduce dilute nitrogen-vacancy color centers in-situ,...
We present an advanced quantum super-resolution imaging technique based on photon statistics measurement and its accurate modeling. Our reconstruction algorithm adapts to any kind of non-Poissonian emitters, outperforming the corresponding classical SOFI method. It offers sub-diffraction resolution improvement that scales with $\sqrt{j}$, where $j$ is highest order central moments photocounts. More remarkably, in combination structured illumination a linear j can be reached. Through...
The Nitrogen-Vacancy (NV) center in diamond is an intriguing electronic spin system with applications quantum radiometry, sensing and computation. In those experiments, a bias magnetic field commonly applied along the NV symmetry axis to eliminate triplet ground state manifold's degeneracy (S=1). this configuration, eigenvectors of spin's projection its are called strong-axial states. Conversely, some experiments weak orthogonal axis, leading eigenstates that balanced linear superpositions...
Abstract Single‐crystal diamond substrates presenting a high concentration of negatively charged nitrogen‐vacancy centers (NV − ) are on demand for the development optically pumped solid‐state sensors such as magnetometers, thermometers, or electrometers. While nitrogen impurities can be easily incorporated during crystal growth, creation vacancies requires further treatment. Electron irradiation and annealing is often chosen in this context, offering advantages with respect to by heavier...
Localized electronic spins in solid-state environments form versatile and robust platforms for quantum sensing, metrology information processing. With optically detected magnetic resonance (ODMR), it is possible to prepare readout highly coherent spin systems, up room temperature, with orders of magnitude enhanced sensitivities spatial resolutions compared induction-based techniques, allowing single manipulations. While ODMR was first observed organic molecules, many other systems have since...
Abstract Monitoring neuronal activity with simultaneously high spatial and temporal resolution in living cell cultures is crucial to advance understanding of the development functioning our brain, gain further insights origin brain disorders. While it has been demonstrated that quantum sensing capabilities nitrogen-vacancy (NV) centers diamond allow real time detection action potentials from large neurons marine invertebrates, monitoring mammalian (presenting much smaller dimensions thus...
Abstract Monitoring neuronal activity with simultaneously high spatial and temporal resolution in living cell cultures is crucial to advance understanding of the development functioning our brain, gain further insights origin brain disorders. While it has been demonstrated that quantum sensing capabilities nitrogen-vacancy (NV) centers diamond allow real time detection action potentials from large neurons marine invertebrates, monitoring mammalian (presenting much smaller dimensions thus...
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...