Publications (19)
Challenging local realism with human choices
The BIG Bell Test Collaboration, C. Abellán, A. AcÃn +105
A Bell test is a randomized trial that compares experimental observations against the philosophical worldview of local realism. A Bell test requires spatially distributed entanglem…
CTA contributions to the 33rd International Cosmic Ray Conference (ICRC2013)
The CTA Consortium, :, O. Abril +1102
Compilation of CTA contributions to the proceedings of the 33rd International Cosmic Ray Conference (ICRC2013), which took place in 2-9 July, 2013, in Rio de Janeiro, Brazil
Predicting Magic from Very Few Measurements
J. M. Varela, L. L. Keller, A. de Oliveira Junior +3
The nonstabilizerness of quantum states is a necessary resource for universal quantum computation, yet its characterization is notoriously demanding. Quantifying nonstabilizerness…
Bell non-locality using tensor networks and sparse recovery
I. S. Eliëns, S. G. A. Brito, R. Chaves
Bell's theorem, stating that quantum predictions are incompatible with a local hidden variable description, is a cornerstone of quantum theory and at the center of many quantum inf…
Local orthogonality as a multipartite principle for quantum correlations
T. Fritz, A. B. Sainz, R. Augusiak +4
In recent years, the use of information principles to understand quantum correlations has been very successful. Unfortunately, all principles considered so far have a bipartite for…
Inferring latent structures via information inequalities
R. Chaves, L. Luft, T. O. Maciel +3
One of the goals of probabilistic inference is to decide whether an empirically observed distribution is compatible with a candidate Bayesian network. However, Bayesian networks wi…
Noisy metrology beyond the standard quantum limit
R. Chaves, J. B. Brask, M. Markiewicz +2
Parameter estimation is of fundamental importance in areas from atomic spectroscopy and atomic clocks to gravitational wave detection. Entangled probes provide a significant precis…
Quantum steering beyond instrumental causal networks
R. V. Nery, M. M. Taddei, R. Chaves +1
We theoretically predict, and experimentally verify with entangled photons, that outcome communication is not enough for hidden-state models to reproduce quantum steering. Hidden-s…
Scaling laws for the decay of multiqubit entanglement
L. Aolita, R. Chaves, D. Cavalcanti +2
We investigate the decay of entanglement of generalized N-particle Greenberger-Horne-Zeilinger (GHZ) states interacting with independent reservoirs. Scaling laws for the decay of e…
Nonlocality Distillation and Quantum Voids
S. G. A. Brito, M. G. M. Moreno, A. Rai +1
Via nonlocality distillation, a number of copies of a given nonlocal correlation can be turned into a new correlation displaying a higher degree of nonlocality. Apart from its clea…
Quantifying Bell non-locality with the trace distance
S. G. A. Brito, B. Amaral, R. Chaves
Measurements performed on distant parts of an entangled quantum state can generate correlations incompatible with classical theories respecting the assumption of local causality. T…
CTA Contributions to the 34th International Cosmic Ray Conference (ICRC2015)
The CTA Consortium, :, A. Abchiche +1305
List of contributions from the CTA Consortium presented at the 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The Netherlands.
Linear-optical simulation of the cooling of a cluster-state Hamiltonian system
G. H. Aguilar, T. Kolb, D. Cavalcanti +4
A measurement-based quantum computer could consist of a local-gapped Hamiltonian system, whose thermal states --at sufficiently low temperature-- are universal resources for the co…
Cherenkov Telescope Array Contributions to the 35th International Cosmic Ray Conference (ICRC2017)
F. Acero, B. S. Acharya, V. AcÃn Portella +1137
List of contributions from the Cherenkov Telescope Array Consortium presented at the 35th International Cosmic Ray Conference, July 12-20 2017, Busan, Korea.
Improved Quantum Magnetometry beyond the Standard Quantum Limit
J. B. Brask, R. Chaves, J. Kolodynski
Under ideal conditions, quantum metrology promises a precision gain over classical techniques scaling quadratically with the number of probe particles. At the same time, no-go resu…
Noisy entanglement evolution for graph states
L. Aolita, D. Cavalcanti, R. Chaves +3
A general method for the study of the entanglement evolution of graph states under the action of Pauli was recently proposed in [Cavalcanti, et al., Phys. Rev. Lett. 103, 030502 (2…
Exploring the Local Orthogonality Principle
A. B. Sainz, T. Fritz, R. Augusiak +4
Nonlocality is arguably one of the most fundamental and counterintuitive aspects of quantum theory. Nonlocal correlations could, however, be even more nonlocal than quantum theory…
Experimental Test of Nonlocal Causality
M. Ringbauer, C. Giarmatzi, R. Chaves +3
Explaining observations in terms of causes and effects is central to all of empirical science. Correlations between entangled quantum particles, however, seem to defy such an expla…
Contributions of the Cherenkov Telescope Array (CTA) to the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016)
The CTA Consortium, :, A. Abchiche +1387
List of contributions from the Cherenkov Telescope Array (CTA) Consortium presented at the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016), July 11-15,…