124 citations · 691 across the 25 of their papers we have counts for
25 papers
Quantum sequential parameter testing
Simon Morelli, Ricard Ravell Rodríguez, John Calsamiglia +3
Sequential strategies in hypothesis testing use a variable number of measurement rounds, allowing a decision to be made as soon as the observed data provide a prescribed level of e…
Amplitude-amplified coherence detection and estimation
Rhea Alexander, Michalis Skotiniotis, Daniel Manzano
The detection and characterization of quantum coherence is of fundamental importance both in the foundations of quantum theory as well as for the rapidly developing field of quantu…
Super-resolution of partially coherent bosonic sources
Joaquín López-Suárez, Michalis Skotiniotis
We consider imaging of two partially coherent sources and derive the ultimate quantum limits for estimating the separation, location, relative intensity, and coherence factor. We s…
Sequential analysis in a continuous spin-noise quantum sensor
Elisabet Roda-Salichs, Giulio Gasbarri, Antoni Alou +5
Many control and detection applications require real-time analysis of signals from sensors, in order to quickly and accurately act upon events revealed by the sensors. Such signal…
Cloning Quantum Channels
Pavel Sekatski, Yelena Guryanova, Naga Bhavya Teja Kothakonda +1
We consider the problem of deterministically cloning quantum channels with respect to the best attainable rate and the highest quality, so-called optimal cloning. We demonstrate th…
Entanglement Detection with Quantum-inspired Kernels and SVMs
Ana Martínez-Sabiote, Michalis Skotiniotis, Jara J. Bermejo-Vega +2
This work presents a machine learning approach based on support vector machines (SVMs) for quantum entanglement detection. Particularly, we focus in bipartite systems of dimensions…
Thermodynamics of Hamiltonian anyons with applications to quantum heat engines
Joe Dunlop, Álvaro Tejero, Michalis Skotiniotis +1
The behavior of a collection of identical particles is intimately linked to the symmetries of their wavefunction under particle exchange. Topological anyons, arising as quasipartic…
Inter-species spin-noise correlations in hot atomic vapors
K. Mouloudakis, F. Vouzinas, A. Margaritakis +9
We report an experimental and theoretical study of spin noise correlations in a Rb-Cs unpolarized alkali-metal vapor dominated by spin-exchange collisions. We observ…
Universal algorithms for quantum data learning
Marco Fanizza, Michalis Skotiniotis, John Calsamiglia +2
Operating quantum sensors and quantum computers would make data in the form of quantum states available for purely quantum processing, opening new avenues for studying physical pro…
Metrology-assisted entanglement distribution in noisy quantum networks
Simon Morelli, David Sauerwein, Michalis Skotiniotis +1
We consider the distribution of high-dimensional entangled states to multiple parties via noisy channels and the subsequent probabilistic conversion of these states to desired targ…
Superresolving collective quantum measurements
J. O. de Almeida, M. Lewenstein, M. Skotiniotis
We demonstrate a method for super-resolving signals encoded as finite mixtures of bosonic modes using collective measurements that exploit permutation symmetry. Specifically, we us…
How long does it take to implement a projective measurement?
Philipp Strasberg, Kavan Modi, Michalis Skotiniotis
According to the Schrödinger equation, a closed quantum system evolves continuously in time. If it is subject to a measurement however, its state changes randomly and discontinuous…
Quantum Sequential Hypothesis Testing
Esteban Martínez-Vargas, Christoph Hirche, Gael Sentís +4
We introduce sequential analysis in quantum information processing, by focusing on the fundamental task of quantum hypothesis testing. In particular our goal is to discriminate bet…
Squeezing-enhanced communication without a phase reference
Marco Fanizza, Matteo Rosati, Michalis Skotiniotis +2
We study the problem of transmitting classical information using quantum Gaussian states on a family of phase-noise channels with a finite decoherence time, such that the phase-ref…
Quantum Godwin's Law
Michalis Skotiniotis, Andreas Winter
Godwin's law, i.e. the empirical observation that as an online discussion grows in time, the probability of a comparison with Nazis or Hitler quickly approaches unity, is one of th…
Discrimination and estimation of incoherent sources under misalignment
J. O. de Almeida, J. Kołodyński, C. Hirche +2
Spatially resolving two incoherent point sources whose separation is well below the diffraction limit dictated by classical optics has recently been shown possible using techniques…
Reinforcement learning for optimal error correction of toric codes
Laia Domingo Colomer, Michalis Skotiniotis, Ramon Muñoz-Tapia
We apply deep reinforcement learning techniques to design high threshold decoders for the toric code under uncorrelated noise. By rewarding the agent only if the decoding procedure…
Accessible coherence in open quantum system dynamics
María García Díaz, Benjamin Desef, Matteo Rosati +5
Quantum coherence generated in a physical process can only be cast as a potentially useful resource if its effects can be detected at a later time. Recently, the notion of non-cohe…
Beyond the swap test: optimal estimation of quantum state overlap
Marco Fanizza, Matteo Rosati, Michalis Skotiniotis +2
We study the estimation of the overlap between two unknown pure quantum states of a finite dimensional system, given and copies of each type. This is a fundamental primitiv…
Identification of malfunctioning quantum devices
M. Skotiniotis, Santiago Llorens, R. Hotz +2
We consider the problem of correctly identifying a malfunctioning quantum device that forms part of a network of such devices, which can be considered as the quantum analogue o…
Using and reusing coherence to realize quantum processes
María García Díaz, Kun Fang, Xin Wang +4
Coherent superposition is a key feature of quantum mechanics that underlies the advantage of quantum technologies over their classical counterparts. Recently, coherence has been re…
Macroscopic superpositions require tremendous measurement devices
M. Skotiniotis, W. Dür, P. Sekatski
We consider fundamental limits on the detectable size of macroscopic quantum superpositions. We argue that a full quantum mechanical treatment of system plus measurement device is…
Flexible resources for quantum metrology
Nicolai Friis, Davide Orsucci, Michalis Skotiniotis +4
Quantum metrology offers a quadratic advantage over classical approaches to parameter estimation problems by utilizing entanglement and nonclassicality. However, the hurdle of actu…
Quantum metrology with full and fast quantum control
Pavel Sekatski, Michalis Skotiniotis, Janek Kołodyński +1
We establish general limits on how precise a parameter, e.g. frequency or the strength of a magnetic field, can be estimated with the aid of full and fast quantum control. We consi…