Zobrazeno 1 - 10
of 48
pro vyhledávání: '"De Santis, Dario"'
Several combinatorial optimization problems can be solved with NISQ devices once that a corresponding quadratic unconstrained binary optimization (QUBO) form is derived. The aim of this work is to drastically reduce the variables needed for these QUB
Externí odkaz:
http://arxiv.org/abs/2406.07681
Statistical quantifiers are generically required to contract under physical evolutions, following the intuition that information should be lost under noisy transformations. This principle is very relevant in statistics, and it even allows to derive u
Externí odkaz:
http://arxiv.org/abs/2310.16107
The importance of the quantum Fisher information metric is testified by the number of applications that this has in very different fields, ranging from hypothesis testing to metrology, passing through thermodynamics. Still, from the rich range of pos
Externí odkaz:
http://arxiv.org/abs/2304.14984
Autor:
De Santis, Dario
Publikováno v:
Quantum 7, 1124 (2023)
Non-Markovian dynamics are characterized by information backflows, where the evolving open quantum system retrieves part of the information previously lost in the environment. Hence, the very definition of non-Markovianity implies an initial time int
Externí odkaz:
http://arxiv.org/abs/2302.04883
We study how the number of employed modes impacts the ability to witness non-Markovian evolutions via correlation backflows in continuous-variable quantum dynamics. We first prove the existence of non-Markovian Gaussian evolutions that do not show an
Externí odkaz:
http://arxiv.org/abs/2207.01649
Publikováno v:
SciPost Phys. 15, 014 (2023)
A non-isolated physical system typically loses information to its environment, and when such loss is irreversible the evolution is said to be Markovian. Non-Markovian effects are studied by monitoring how information quantifiers, such as the distance
Externí odkaz:
http://arxiv.org/abs/2204.04072
Autor:
Rahimi-Keshari, Saleh, Mehboudi, Mohammad, De Santis, Dario, Cavalcanti, Daniel, Acín, Antonio
Measurement incompatibility is a distinguishing property of quantum physics and an essential resource for many quantum information processing tasks. We introduce an approach to verify the joint measurability of measurements based on phase-space quasi
Externí odkaz:
http://arxiv.org/abs/2012.06853
Publikováno v:
Phys. Rev. A 103, 012218 (2021)
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 transformation Markovian too at all times. We show how to evaluate thi
Externí odkaz:
http://arxiv.org/abs/2004.03741
Autor:
De Santis, Dario, Johansson, Markus
Publikováno v:
New J. Phys. 22, 093034 (2020)
The information encoded into an open quantum system that evolves under a Markovian dynamics is always monotonically non-increasing. Nonetheless, for a given quantifier of the information contained in the system, it is in general not clear if for all
Externí odkaz:
http://arxiv.org/abs/1906.06269
Publikováno v:
Phys. Rev. A 102, 012214 (2020)
Non-Markovian effects in an open-system dynamics are usually associated to information backflows from the environment to the system. However, the way these backflows manifest and how to detect them is unclear. A natural approach is to study the backf
Externí odkaz:
http://arxiv.org/abs/1903.12218