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Thermodynamics of creating correlations: Limitations and optimal protocols
(APS Physics, 2015-03-11)
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We establish a rigorous connection between fundamental resource theories at the quantum scale. Correlations
and entanglement constitute indispensable resources for numerous quantum information tasks. However, their
establishment ...
Secrecy in Prepare-and-Measure Clauser-Horne-Shimony-Holt Tests with a Qubit Bound
(APS, 2015-10-06)
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The security of device-independent (DI) quantum key distribution (QKD) protocols relies on the violation of Bell inequalities. As such, their security can be established based on minimal assumptions about the devices, but ...
Almost quantum correlations
(Nature Publishing group, 2015-02-20)
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Quantum theory is not only successfully tested in laboratories every day but also constitutes a robust theoretical framework: small variations usually lead to implausible consequences, such as faster-than-light communication. ...
Detection of entanglement in asymmetric quantum networks and multipartite quantum steering
(Nature Publishing Group, 2015-08-03)
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The future of quantum communication relies on quantum networks composed by observers sharing multipartite quantum states. The certification of multipartite entanglement will be crucial to the usefulness of these networks. ...
Nonlocality in many-body quantum systems detected with two-body correlators
(Science Direct, 2015-07-30)
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Contemporary understanding of correlations in quantum many-body systems and in quantum phase transitions
is based to a large extent on the recent intensive studies of entanglement in many-body systems. In contrast,
much ...
Maximally Nonlocal Theories Cannot Be Maximally Random
(APS, 2015-04-22)
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Correlations that violate a Bell inequality are said to be nonlocal; i.e., they do not admit a local and deterministic explanation. Great effort has been devoted to study how the amount of nonlocality (as measured by a ...
Quantum many-body systems out of equilibrium
(Nature Publishing group, 2015-02-03)
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How do closed quantum many-body systems driven out of equilibrium eventually achieve equilibration? And how do these
systems thermalize, given that they comprise so many degrees of freedom? Progress in answering these—and ...
Detection loophole attacks on semi-device-independent quantum and classical protocols
(Rinton Press, 2015-01-01)
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Semi-device-independent quantum protocols realize information tasks – e.g. secure key
distribution, random access coding, and randomness generation – in a scenario where no
assumption on the internal working of the devices ...
Split, but still attached
(Science, 2018-04-27)
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Recent years have witnessed the beginning of the second quantum revolution, in which an impressive degree of control over quantum systems has led to several applications in quantum communication, computation, and sensing, ...
Locality of temperature in spin chains
(IOP, 2015-08-18)
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In traditional thermodynamics, temperature is a local quantity: a subsystem of a large thermal system is in a thermal state at the same temperature as the original system. For strongly interacting systems, however, the ...