Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Amaral, Barbara"'
The resource theory of contextuality considers resourceful objects to be probabilistic data-tables, known as correlations or behaviors, that fail to have an explanation in terms of Kochen-Specker noncontextual models. In this work, we advance this re
Externí odkaz:
http://arxiv.org/abs/2407.02120
In classical thermodynamics, heat must spontaneously flow from hot to cold systems. In quantum thermodynamics, the same law applies when considering multipartite product thermal states evolving unitarily. If initial correlations are present, anomalou
Externí odkaz:
http://arxiv.org/abs/2406.09715
Recently there has been interest, and impressive progress, in extending the definition of contextuality to systems with disturbance. We prove here that such an endeavor cannot simultaneously satisfy the following core principles of contextuality: (1)
Externí odkaz:
http://arxiv.org/abs/2212.06976
Autor:
Santos, Tiago, Amaral, Barbara
Resource theories constitute a powerful theoretical framework and a tool that captures, in an abstract structure, pragmatic aspects of the most varied theories and processes. For physical theories, while this framework deals directly with questions a
Externí odkaz:
http://arxiv.org/abs/2210.03268
We define an alternative way of quantifying nonlocality of states based on Bell nonlocality of behaviors, called the trace-weighted nonlocal volume. The construction is based on the nonlocal volume, a quantifier of nonlocality for states that counts
Externí odkaz:
http://arxiv.org/abs/2204.06537
Autor:
Baldijão, Roberto D., Wagner, Rafael, Duarte, Cristhiano, Amaral, Bárbara, Cunha, Marcelo Terra
Publikováno v:
PRX Quantum 2, 030351 (2021)
Quantum Darwinism proposes that the proliferation of redundant information plays a major role in the emergence of objectivity out of the quantum world. Is this kind of objectivity necessarily classical? We show that if one takes Spekkens' notion of n
Externí odkaz:
http://arxiv.org/abs/2104.05734
We employ the resource theory of generalized contextuality as a tool for analyzing the structure of prepare-and-measure scenarios. We argue that this framework simplifies proofs of quantum contextuality in complex scenarios and strengthens existing a
Externí odkaz:
http://arxiv.org/abs/2102.10469
With the birth of quantum information science, many tools have been developed to deal with many-body quantum systems. Although a complete description of such systems is desirable, it will not always be possible to achieve this goal, as the complexity
Externí odkaz:
http://arxiv.org/abs/2011.10349
Autor:
Santos, Leonardo, Amaral, Barbara
Publikováno v:
Phys. Rev. A 104, 022201 (2021)
Contextuality and nonlocality are non-classical properties exhibited by quantum statistics whose implications profoundly impact both foundations and applications of quantum theory. In this paper we provide some insights into logical contextuality and
Externí odkaz:
http://arxiv.org/abs/2011.04111