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

2.8k citations

Showing 2020 · quant-phShow all

33 papers · 2 filters

quant-ph2020★ 65 cited

Device-independent quantum key distribution with asymmetric CHSH inequalities

Erik Woodhead, Antonio Acín, Stefano Pironio

The simplest device-independent quantum key distribution protocol is based on the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality and allows two users, Alice and Bob, to generate…

quant-ph2020★ 14 cited

Single-copy activation of Bell nonlocality via broadcasting of quantum states

Joseph Bowles, Flavien Hirsch, Daniel Cavalcanti

Activation of Bell nonlocality refers to the phenomenon that some entangled mixed states that admit a local hidden variable model in the standard Bell scenario nevertheless reveal…

quant-ph2020★ 1 cited

Significant nonclassical paths with atoms and cavities in the double-slit experiment

J. O. de Almeida, M. Lewenstein, J. Q. Quach

In the the double-slit experiment, nonclassical paths are Feynman paths that go through both slits. Prior work with atom cavities as which-way detectors in the double-slit experime…

quant-ph2020★ 13 cited

Self-testing mutually unbiased bases in higher dimensions with space-division multiplexing optical fiber technology

Máté Farkas, Nayda Guerrero, Jaime Cariñe +2

In the device-independent quantum information approach, the implementation of a given task can be self-tested solely from the recorded statistics and without detailed models for th…

quant-ph2020★ 20 cited

Entanglement marginal problems

Miguel Navascues, Flavio Baccari, Antonio Acin

We consider the entanglement marginal problem, which consists of deciding whether a number of reduced density matrices are compatible with an overall separable quantum state. To ta…

quant-ph2020★ 42 cited

Maximum refractive index of an atomic medium

Francesco Andreoli, Michael J. Gullans, Alexander A. High +2

It is interesting to observe that all optical materials with a positive refractive index have a value of index that is of order unity. Surprisingly, though, a deep understanding of…

quant-ph2020★ 32 cited

From the Jaynes-Cummings model to non-Abelian gauge theories: a guided tour for the quantum engineer

Valentin Kasper, Gediminas Juzeliunas, Maciej Lewenstein +2

The design of quantum many body systems, which have to fulfill an extensive number of constraints, appears as a formidable challenge within the field of quantum simulation. Lattice…

quant-ph2020

Random singlet phase of cold atoms coupled to a photonic crystal waveguide

David Z. Li, Marco T. Manzoni, Darrick E. Chang

Systems consisting of cold atoms trapped near photonic crystal waveguides have recently emerged as an exciting platform for quantum atom-light interfaces. Such a system enables rea…

quant-ph2020★ 12 cited

General Probabilistic Theories with a Gleason-type Theorem

Victoria J Wright, Stefan Weigert

Gleason-type theorems for quantum theory allow one to recover the quantum state space by assuming that (i) states consistently assign probabilities to measurement outcomes and that…

quant-ph2020★ 54 cited

Strong Optomechanical Coupling at Room Temperature by Coherent Scattering

Andrés de los Ríos Sommer, Nadine Meyer, Romain Quidant

Quantum control of a system requires the manipulation of quantum states faster than any decoherence rate. For mesoscopic systems, this has so far only been reached by few cryogenic…

quant-ph2020★ 7 cited

Frequency correlation requirements on the biphoton wavefunction in an induced coherence experiment between separate sources

Arturo Rojas-Santana, Gerard J. Machado, Dorilian Lopez-Mago +1

There is renewed interest in using the coherence between beams generated in separate down-converter sources for new applications in imaging, spectroscopy, microscopy and optical co…

quant-ph2020★ 35 cited

Quantum advantage in simulating stochastic processes

Kamil Korzekwa, Matteo Lostaglio

We investigate the problem of simulating classical stochastic processes through quantum dynamics, and present three scenarios where memory or time quantum advantages arise. First,…

quant-ph2020★ 13 cited

Modifying method of constructing quantum codes from highly entangled states

Zahra Raissi

There is a connection between classical codes, highly entangled pure states (called k-uniform or absolutely maximally entangled (AME) states), and quantum error correcting codes (Q…

quant-ph2020★ 8 cited

Measuring non-Markovianity via incoherent mixing with Markovian dynamics

Dario De Santis, Vittorio Giovannetti

We introduce a measure of non-Markovianity based on the minimal amount of extra Markovian noise we have to add to the process via incoherent mixing, in order to make the resulting…

quant-ph2020★ 8 cited

Strong quantum correlations of light emitted by a single atom in free space

Daniel Goncalves, Morgan W. Mitchell, Darrick E. Chang

We present a novel approach to engineer the photon correlations emerging from the interference between an input field and the field scattered by a single atom in free space. Nomina…

quant-ph2020★ 22 cited

Stochastic Local Operations with Classical Communication of Absolutely Maximally Entangled States

Adam Burchardt, Zahra Raissi

Absolutely Maximally Entangled (AME) states are maximally entangled for every bipartition of the system. They are crucial resources for various quantum information protocols. We pr…

quant-ph2020★ 51 cited

SU(2)-in-SU(1,1) Nested Interferometer for Highly Sensitive, Loss-Tolerant Quantum Metrology

Wei Du, Jia Kong, Jun Jia +6

We present experimental and theoretical results on a new interferometer topology that nests a SU(2) interferometer, e.g., a Mach-Zehnder or Michelson interferometer, inside a SU(1,…

quant-ph2020★ 17 cited

Detecting many-body Bell non-locality by solving Ising models

Irénée Frérot, Tommaso Roscilde

Bell non-locality represents the ultimate consequence of quantum entanglement, fundamentally undermining the classical tenet that spatially-separated degrees of freedom possess obj…

quant-ph2020★ 28 cited

Phase Detection with Neural Networks: Interpreting the Black Box

Anna Dawid, Patrick Huembeli, Michał Tomza +2

Neural networks (NNs) usually hinder any insight into the reasoning behind their predictions. We demonstrate how influence functions can unravel the black box of NN when trained to…

quant-ph2020★ 89 cited

Certifying quantum signatures in thermodynamics and metrology via contextuality of quantum linear response

Matteo Lostaglio

We identify a fundamental difference between classical and quantum dynamics in the linear response regime by showing that the latter is in general contextual. This allows us to pro…

quant-ph2020★ 63 cited

A cold atom temporally multiplexed quantum memory with cavity-enhanced noise suppression

Lukas Heller, Pau Farrera, Georg Heinze +1

Future quantum repeater architectures, capable of efficiently distributing information encoded in quantum states of light over large distances, will benefit from multiplexed photon…

quant-ph2020★ 114 cited

Unsupervised phase discovery with deep anomaly detection

Korbinian Kottmann, Patrick Huembeli, Maciej Lewenstein +1

We demonstrate how to explore phase diagrams with automated and unsupervised machine learning to find regions of interest for possible new phases. In contrast to supervised learnin…

quant-ph2020★ 21 cited

Universal and optimal coin sequences for high entanglement generation in 1D discrete time quantum walks

Aikaterini Gratsea, Friederike Metz, Thomas Busch

Entanglement is a key resource in many quantum information applications and achieving high values independently of the initial conditions is an important task. Here we address the…

quant-ph2020★ 36 cited

Device-Independent Certification of Genuinely Entangled Subspaces

Flavio Baccari, Remigiusz Augusiak, Ivan Šupić +1

Self-testing is a procedure for characterizing quantum resources with the minimal level of trust. Up to now it has been used as a device-independent certification tool for particul…