Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.5k papers
- California Institute of TechnologyUS1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- European Organization for Nuclear ResearchCH1.7k papers
- The Ohio State UniversityUS1.7k papers
- Universität HamburgDE1.7k papers
- National Centre for Nuclear ResearchPL1.6k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PadovaIT1.6k papers
- Rutherford Appleton LaboratoryGB1.6k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT1.6k papers
- Charles UniversityCZ1.6k papers
45 papers · 2 filters
Interferometric signature of different spectral symmetries of biphoton states
Nicolas Fabre
In this paper, we investigate the influence of the symmetry of the biphoton wavefunction on the coincidence measurement of the generalized Mach-Zehnder (MZ) interferometer, where t…
Optimality of any pair of incompatible rank-one projective measurements for some non-trivial Bell inequality
Gabriel Pereira Alves, Jędrzej Kaniewski
Bell non-locality represents one of the most striking departures of quantum mechanics from classical physics. It shows that correlations between space-like separated systems allowe…
Testing accuracy of qubit rotations on a public quantum computer
Tomasz Białecki, Tomasz Rybotycki, Jakub Tworzydło +1
We analyze the results of the test of qubit rotations on the public quantum computer provided by IBM. We measure a single qubit rotated by about a random axis, and we a…
Realistic photon-number resolution in generalized Hong-Ou-Mandel experiment
V. Ye. Len, M. M. Byelova, V. A. Uzunova +1
We consider realistic photodetection in a generalization of the Hong-Ou-Mandel experiment to the multimode case. The basic layout of this experiment underlies boson sampling -- a p…
Quantifying incompatibility of quantum measurements through non-commutativity
Krzysztof Mordasewicz, Jędrzej Kaniewski
The existence of incompatible measurements, i.e. measurements which cannot be performed simultaneously on a single copy of a quantum state, constitutes an important distinction bet…
Stochastic approximate state conversion for entanglement and general quantum resource theories
Tulja Varun Kondra, Chandan Datta, Alexander Streltsov
Quantum resource theories provide a mathematically rigorous way of understanding the nature of various quantum resources. An important problem in any quantum resource theory is to…
Hierarchy of correlation quantifiers comparable to negativity
Ray Ganardi, Marek Miller, Tomasz Paterek +1
Quantum systems generally exhibit different kinds of correlations. In order to compare them on equal footing, one uses the so-called distance-based approach where different types o…
Nonclassical correlations in decaying systems
Stanisław Sołtan, Adam Bednorz
A quantum decaying system can reveal its nonclassical behavior by being noninvasively measured. Correlations of weak measurements in the noninvasive limit violate the classical bou…
Controlling the dynamics of ultracold polar molecules in optical tweezers
Marta Sroczyńska, Anna Dawid, Michał Tomza +3
Ultracold molecules trapped in optical tweezers show great promise for the implementation of quantum technologies and precision measurements. We study a prototypical scenario where…
Spectral single photons characterization using generalized Hong, Ou and Mandel interferometry
Nicolas Fabre
New methods are proposed to characterize the spectral-temporal distribution of single photons. The presented protocols take advantage of spectral filtering, frequency entanglement…
Semiparametric estimation in Hong-Ou-Mandel interferometry
Valeria Cimini, Francesco Albarelli, Ilaria Gianani +1
We apply the theory of semiparametric estimation to a Hong-Ou-Mandel interference experiment with a spectrally entangled two-photon state generated by spontaneous parametric downco…
Multiparameter estimation for qubit states with collective measurements: a case study
Yink Loong Len
Quantum estimation involving multiple parameters remains an important problem of both theoretical and practical interest. In this work, we study the problem of simultaneous estimat…
Quantum metrology with imperfect measurements
Yink Loong Len, Tuvia Gefen, Alex Retzker +1
The impact of measurement imperfections on quantum metrology protocols has not been approached in a systematic manner so far. In this work, we tackle this issue by generalising fir…
Loss of Antibunching
Juan Camilo López Carreño, Eduardo Zubizarreta Casalengua, Blanca Silva +2
We describe some of the main external mechanisms that lead to a loss of antibunching, i.e., that spoil the character of a given quantum light to deliver its photons separated the o…
Hessian-based toolbox for reliable and interpretable machine learning in physics
Anna Dawid, Patrick Huembeli, Michał Tomza +2
Machine learning (ML) techniques applied to quantum many-body physics have emerged as a new research field. While the numerical power of this approach is undeniable, the most expre…
Fundamental limits in Bayesian thermometry and attainability via adaptive strategies
Mohammad Mehboudi, Mathias R. Jørgensen, Stella Seah +3
We investigate the limits of thermometry using quantum probes at thermal equilibrium within the Bayesian approach. We consider the possibility of engineering interactions between t…
Bayesian quantum thermometry based on thermodynamic length
Mathias R. Jørgensen, Jan Kołodyński, Mohammad Mehboudi +2
In this work, we propose a theory of temperature estimation of quantum systems, which is applicable in the regime of non-negligible prior temperature uncertainty and limited measur…
Parameter estimation of time and frequency shifts with generalized HOM interferometry
Nicolas Fabre, Simone Felicetti
Hong-Ou-Mandel interferometry takes advantage of the quantum nature of two-photon interference to increase the resolution of precision measurements of time-delays. Relying on few-p…
Kramers-Kronig relations and precision limits in quantum phase estimation
Ilaria Gianani, Marco Barbieri, Francesco Albarelli +3
The ultimate precision in any measurement is dictated by the physical process implementing the observation. The methods of quantum metrology have now succeeded in establishing boun…
TNQMetro: Tensor-network based package for efficient quantum metrology computations
Krzysztof Chabuda, Rafal Demkowicz-Dobrzanski
TNQMetro is a numerical package written in Python for calculations of fundamental quantum bounds on measurement precision. Thanks to the usage of the tensor-network formalism it ca…
Quantum asymmetry and noisy multi-mode interferometry
Francesco Albarelli, Mateusz Mazelanik, Michał Lipka +3
Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator responsible for phase encoding in interferometric exper…
Multiple-phase quantum interferometry -- real and apparent gains of measuring all the phases simultaneously
Wojciech Gorecki, Rafal Demkowicz-Dobrzanski
We characterize operationally meaningful quantum gains in a paradigmatic model of lossless multiple-phase interferometry and stress insufficiency of the analysis based solely on th…
Preserving quantum correlations and coherence with non-Markovianity
Marek Miller, Kang-Da Wu, Manfredi Scalici +5
Open quantum systems exhibit a rich phenomenology, in comparison to closed quantum systems that evolve unitarily according to the Schrödinger equation. The dynamics of an open quan…
Genuinely quantum SudoQ and its cardinality
Jerzy Paczos, Marcin Wierzbiński, Grzegorz Rajchel-Mieldzioć +2
We expand the quantum variant of the popular game Sudoku by introducing the notion of cardinality of a quantum Sudoku (SudoQ), equal to the number of distinct vectors appearing in…