output
20132026
most citedExperimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km

2.8k citations

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319 papers · 1 filter

quant-ph2025★ 1 cited

Decoy-state quantum key distribution over 227 km with a frequency-converted telecom single-photon source

Frederik Brooke Barnes, Roberto G. Pousa, Christopher L. Morrison +7

We implement a decoy-state quantum key distribution scheme using a telecom C-band single-emitter source. The decoy states are created by varying the optical excitation of the quant…

quant-ph2025

Kinetically constrained cavity QED: from blockaded ferromagnetism to long-range quantum scars

Hossein Hosseinabadi, Riccardo J. Valencia-Tortora, Aleksandr N. Mikheev +4

Rydberg-cavity systems are emerging as promising platforms for quantum simulation and quantum information processing. These hybrid architectures combine two complementary interacti…

quant-ph2025★ 5 cited

Non-stabilizerness in quantum-enhanced metrological protocols

Tanausú Hernández-Yanes, Piotr Sierant, Jakub Zakrzewski +1

Non-stabilizerness (colloquially "magic") characterizes genuinely quantum (beyond-Clifford) operations necessary for preparation of quantum states, and can be measured by stabilize…

quant-ph2025★ 1 cited

Learning Minimal Representations of Many-Body Physics from Snapshots of a Quantum Simulator

Frederik Møller, Gabriel Fernández-Fernández, Thomas Schweigler +3

Analog quantum simulators provide access to many-body dynamics beyond the reach of classical computation. However, extracting physical insights from experimental data is often hind…

quant-ph2025

Quantum contextuality from measurement invasiveness

Andrea Navoni, Marco G. Genoni, Andrea Smirne

Contextuality is a defining feature that separates the quantum from the classical descriptions of physical systems. Within the marginal-scenario framework, noncontextual models are…

quant-ph2025

Quantum Kramers-Henneberger Transformation

Javier Argüello-Luengo, Javier Rivera-Dean, Philipp Stammer +2

The classical Kramers-Henneberger transformation connects, via a series of unitary transformations, the dynamics of a quantum particle of mass located in a trap at position $α(…

quant-ph2025

Beyond Ground States: Physics-Inspired Optimization of Excited States of Classical Hamiltonians

Erik Altelarrea-Ferré, Júlia Barberà-Rodríguez, David Jansen +1

We introduce excited local quantum annealing (ExcLQA), a classical, physics-inspired algorithm that extends local quantum annealing (LQA) to identify excited states of classical Is…

quant-ph2025

Spatial Leggett-Garg inequalities

Guillem Müller-Rigat, Donato Farina, Maciej Lewenstein +1

We formulate a spatial extension of the Leggett-Garg inequality by considering three distant observers locally measuring a many-body system at three subsequent times. The spatial f…

quant-ph2025

Certifying Macroscopic Quantum Mechanics via Hypothesis Testing with Finite Data

Andreu Riera-Campeny, Patrick Maurer, Oriol Romero-Isart

We address the challenge of certifying quantum behavior with single macroscopic massive particles, subject to decoherence and finite data. We propose a hypothesis testing framework…

quant-ph2025★ 3 cited

Closing the detection loophole in the triangle network with high-dimensional photonic states

Tamás Kriváchy, Martin Kerschbaumer

Bell nonlocality without input settings, e.g. in the triangle network, has been perceived to be particularly fragile, with low robustness to noise in physical implementations. Here…

quant-ph2025★ 1 cited

Simulating Noncausality with Quantum Control of Causal Orders

Anna Steffinlongo, Hippolyte Dourdent

Logical consistency with free local operations is compatible with non-trivial classical communications, where all parties can be both in each other's past and future-a phenomenon k…

quant-ph2025★ 5 cited

Uniting Quantum Processing Nodes of Cavity-coupled Ions with Rare-earth Quantum Repeaters Using Single-photon Pulse Shaping Based on Atomic Frequency Comb

P. Cussenot, B. Grivet, B. P. Lanyon +4

We present an architecture for remotely connecting cavity-coupled trapped ions via a quantum repeater based on rare-earth-doped crystals. The main challenge for its realization lie…

quant-ph2025★ 19 cited

Continuous-variable quantum communication

Vladyslav C. Usenko, Antonio Acín, Romain Alléaume +8

Tremendous progress in experimental quantum optics in recent decades has enabled the advent of quantum technologies, one of which is quantum communication. Aimed at novel methods f…

quant-ph2024★ 11 cited

Integrated InP-based transmitter for Continuous-Variable Quantum Key Distribution

Jennifer Aldama, Samael Sarmiento, Luis Trigo Vidarte +9

Developing quantum key distribution (QKD) systems using monolithic photonic integrated circuits (PICs) can accelerate their adoption by a wide range of markets, thanks to the poten…

quant-ph2024

Learning complexity gradually in quantum machine learning models

Erik Recio-Armengol, Franz J. Schreiber, Jens Eisert +1

Quantum machine learning is an emergent field that continues to draw significant interest for its potential to offer improvements over classical algorithms in certain areas. Howeve…

quant-ph2024

Harnessing quantum back-action for time-series processing

Giacomo Franceschetto, Marcin Płodzień, Maciej Lewenstein +2

Quantum measurements affect the state of the observed systems via back-action. While projective measurements extract maximal classical information, they drastically alter the syste…

quant-ph2024★ 3 cited

Experimental quantum triangle network nonlocality with an AlGaAs multiplexed entangled photon source

Othmane Meskine, Ivan Šupić, Damian Markham +8

The exploration of the concept of nonlocality beyond standard Bell scenarios in quantum network architectures unveils fundamentally new forms of correlations that hold a strong pot…

quant-ph2024★ 7 cited

Certifying steady-state properties of open quantum systems

Luke Mortimer, Donato Farina, Grazia Di Bello +4

Estimating the steady-state properties of open many-body quantum systems is a fundamental challenge in quantum science and technologies. In this work, we present a scalable approac…

quant-ph2024★ 6 cited

Exploring Non-Markovianity in Ergodic Channels: Measuring Memory Retention through Ergotropy

Ritam Basu, Anish Chakraborty, Himanshu Badhani +2

In this work we introduce and characterize a broad class of quantum operations with a unique fixed point, termed quantum ergodic channels. We derive Lindblad-type master equations…

quant-ph2024★ 15 cited

Colloquium: Synthetic quantum matter in non-standard geometries

Tobias Grass, Dario Bercioux, Utso Bhattacharya +3

Quantum simulation is making a significant impact on scientific research. The prevailing tendency of the field is to build quantum simulators that get closer to real-world systems…

quant-ph2024★ 36 cited

Evidence of the quantum-optical nature of high-harmonic generation

David Theidel, Viviane Cotte, René Sondenheimer +11

High-harmonic generation is a light up-conversion process occurring in a strong laser field, leading to coherent bursts of extreme ultrashort broadband radiation [1]. As a new pers…

quant-ph2024★ 2 cited

Collectively enhanced ground-state cooling in subwavelength atomic arrays

Oriol Rubies-Bigorda, Raphael Holzinger, Ana Asenjo-Garcia +6

Subwavelength atomic arrays feature strong light-induced dipole-dipole interactions, resulting in subradiant collective resonances characterized by narrowed linewidths. In this wor…

quant-ph2024★ 5 cited

Inherent quantum resources in stationary spin chains

Marcin Płodzień, Jan Chwedeńczuk, Maciej Lewenstein

The standard way to generate many-body quantum correlations is via a dynamical protocol: an initial product state is transformed by interactions that generate non-classical correla…

quant-ph2024★ 2 cited

Long-range multipartite entanglement near measurement-induced transitions

Sebastien J Avakian, T. Pereg-Barnea, William Witczak-Krempa

Measurements profoundly impact quantum systems, and can be used to create novel states of matter out of equilibrium. We investigate the multipartite entanglement structure that eme…