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19912026
most citedAdvances in Quantum Metrology

3.9k citations

Showing 2024 · quant-phShow all

17 papers · 2 filters

quant-ph2024★ 5 cited

High-dimensional quantum key distribution with resource-efficient detection

Maciej Ogrodnik, Adam Widomski, Dagmar Bruß +7

While quantum key distribution (QKD) based on two-dimensional (qubit) encoding is a mature, field-tested technology, its performance is lacking for many cryptographic applications.…

quant-ph2024★ 3 cited

Quantum-enhanced dark matter detection with in-cavity control: mitigating the Rayleigh curse

Haowei Shi, Anthony J. Brady, Wojciech Górecki +3

The nature of dark matter is a fundamental puzzle in modern physics. A major approach of searching for dark matter relies on detecting feeble noise in microwave cavities. However,…

quant-ph2024★ 11 cited

Interplay between time and energy in bosonic noisy quantum metrology

Wojciech Górecki, Francesco Albarelli, Simone Felicetti +2

Quantum entanglement and coherence often allow for protocols that outperform classical ones in estimating a system's parameter. When using infinite-dimensional probes (such as a bo…

quant-ph2024★ 4 cited

Artificially intelligent Maxwell's demon for optimal control of open quantum systems

Paolo Andrea Erdman, Robert Czupryniak, Bibek Bhandari +4

Feedback control of open quantum systems is of fundamental importance for practical applications in various contexts, ranging from quantum computation to quantum error correction a…

quant-ph2024

Classification of qubit cellular automata on hypercubic lattices

Andrea Pizzamiglio, Alessandro Bisio, Paolo Perinotti

We classify quantum cellular automata whose cells are qubits, on hypercubic lattices , with the von Neumann neighborhood scheme, in terms of realizability as finite-de…

quant-ph2024★ 1 cited

Minimal operational theories: classical theories with quantum features

Davide Rolino, Marco Erba, Alessandro Tosini +1

We introduce a class of probabilistic theories, termed Minimal Strongly Causal Operational Probabilistic Theories, where system dynamics are constrained to the minimal set of opera…

quant-ph2024★ 1 cited

Interferometric binary phase estimations

Simone Roncallo, Xi Lu, Lorenzo Maccone

We propose an interferometric scheme where each photon returns one bit of the binary expansion of an unknown phase. It sets up a method for estimating the phase value at arbitrary…

quant-ph2024★ 2 cited

A perturbative approach to the solution of the Thirring quantum cellular automaton

Alessandro Bisio, Paolo Perinotti, Andrea Pizzamiglio +1

The Thirring Quantum Cellular Automaton (QCA) describes the discrete time dynamics of local fermionic modes that evolve according to one step of the Dirac cellular automaton follow…

quant-ph2024

Complementarity-based complementarity: the choice of mutually unbiased observables shapes quantum uncertainty relations

Laura Serino, Giovanni Chesi, Benjamin Brecht +3

Quantum uncertainty relations impose fundamental limits on the joint knowledge that can be acquired from complementary observables: perfect knowledge of a quantum state in one basi…

quant-ph2024★ 1 cited

Detecting Markovianity of Quantum Processes via Recurrent Neural Networks

Angela Rosy Morgillo, Massimiliano F. Sacchi, Chiara Macchiavello

We present a novel methodology utilizing Recurrent Neural Networks (RNNs) to classify Markovian and non-Markovian quantum processes, leveraging time series data derived from Choi s…

quant-ph2024★ 4 cited

Quantum optical classifier with superexponential speedup

Simone Roncallo, Angela Rosy Morgillo, Chiara Macchiavello +2

Classification is a central task in deep learning algorithms. Usually, images are first captured and then processed by a sequence of operations, of which the artificial neuron repr…

quant-ph2024★ 5 cited

Universal time scalings of sensitivity in Markovian quantum metrology

Arpan Das, Wojciech Gorecki, Rafal Demkowicz-Dobrzanski

Assuming Markovian time evolution of a quantum sensing system, we study the general characterization of the optimal sensitivity scalings with time, under most general quantum contr…

quant-ph2024

Number of bits returned by a quantum estimation

Xi Lu, Wojciech Górecki, Chiara Macchiavello +1

We give two upper bounds to the mutual information in arbitrary quantum estimation strategies. The first is based on some simple Fourier properties of the estimation apparatus. The…

quant-ph2024★ 5 cited

Mutual Information Bounded by Fisher Information

Wojciech Górecki, Xi Lu, Chiara Macchiavello +1

We derive a general upper bound to mutual information in terms of the Fisher information. The bound may be further used to derive a lower bound for the Bayesian quadratic cost. The…

quant-ph2024★ 3 cited

Quantum second harmonic generation in terms of elementary processes

Giovanni Chesi

We address the quantum dynamics of second harmonic generation with a perturbative approach. By inspecting the Taylor expansion of the unitary evolution, we identify the subsequent…

quant-ph2024★ 6 cited

CIRCUS: an autonomous control system for antimatter, atomic and quantum physics experiments

Marco Volponi, Saiva Huck, Ruggero Caravita +49

A powerful and robust control system is a crucial, often neglected, pillar of any modern, complex physics experiment that requires the management of a multitude of different device…

quant-ph2024★ 31 cited

Optimality and Noise-Resilience of Critical Quantum Sensing

Uesli Alushi, Wojciech Górecki, Simone Felicetti +1

We compare critical quantum sensing to passive quantum strategies to perform frequency estimation, in the case of single-mode quadratic Hamiltonians. We show that, while in the uni…