Prof.
Adán Cabello
(University of Seville)
17/07/2017, 15:15
Quantum Information
Oral parallel contribution
Fundamentally binary theories are non-signaling general probabilistic theories in which measurements with many outcomes can always be constructed by selecting from measurements with two outcomes. We show that, for any n, there are quantum correlations between n-outcome measurements which cannot be explained by fundamentally (n-1)-ary theories. Interestingly, even fundamentally binary theories...
Dr.
Gael Sentis
(Naturwissenschaftlich-Technische Fakultät, Universität Siegen, 57068 Siegen, Germany)
17/07/2017, 15:40
Quantum Information
Oral parallel contribution
Sudden changes are ubiquitous in nature. Identifying them is crucial for a number of applications in biology, medicine, and social sciences. Here we take the problem of detecting sudden changes to the quantum domain. We consider a source that emits quantum particles in a default state, until a point where a mutation occurs that causes the source to switch to another state. The problem is then...
Mr.
Alejandro Pozas-Kerstjens
(ICFO)
17/07/2017, 16:05
Quantum Information
Oral parallel contribution
The abstract contains the overview of the talk that is proposed, as well as an introduction to the subject of matter and the presenter's contributions to the field.
Mr.
Ivan Supic
(ICFO - Institut de Ciencies Fotoniques)
17/07/2017, 16:30
Quantum Information
Oral parallel contribution
A very timely enterprise nowadays is to understand which states can be self-tested and how. This question has been answered recently in the bipartite case, while it is largely unexplored in the multipartite case, with only a few scattered results, using a variety of different methods: maximal violation of a corresponding Bell inequality, numerical SWAP method, stabilizer self-testing etc. This...
Mr.
Alejandro Mattar
(ICFO - The Institute of Photonic Sciences)
17/07/2017, 17:25
Quantum Information
Oral parallel contribution
This abstract describes a new scheme for Device Independent Quantum Key Distribution, a minimalist form of quantum cryptography in which no modeling is made about the internal working of the devices used. The scheme is appealing as it relies on single-photon sources, a new-generation technology whose development has boosted lately. When physical imperfections are taken into account, our scheme...
Mr.
Víctor Zapatero
(EI Telecomunicación, Departamento de Teoría de la Señal y Comunicaciones, Universidad de Vigo, Vigo E-36310, Spain)
17/07/2017, 17:50
Quantum Information
Oral parallel contribution
Device-independent quantum key distribution aims to provide users with information-theoretically secure secret keys without any need for characterizing the physical devices. Nevertheless, there still exists a big gap between theory and experiments. In this work, we evaluate the performance of assisted device independent quantum key distribution in a realistic scenario, that is, using practical...
Prof.
Diego Frustaglia
(Universidad de Sevilla)
17/07/2017, 18:15
Quantum Information
Oral parallel contribution
The particular set of numerical bounds satisfied by quantum correlations has been intensively studied as a plausible gateway to the first principles of quantum theory, which up to date remain elusive. Here we show that these bounds are indeed not exclusive to quantum theory: for any abstract correlation scenario with compatible measurements, models built on classical waves produce events with...
Dr.
Carlos Sabín
(Instituto de Física Fundamental, CSIC)
17/07/2017, 18:40
Quantum Information
Oral parallel contribution
We will discuss several schemes for simulating relativistic motion in superconducting circuit architectures. As a first example, we show how the dynamical modulation of the qubit-field coupling strength in a circuit quantum electrodynamics architecture mimics the motion of the qubit at relativistic speeds. This allows us to propose a realistic experiment to detect microwave photons coming from...
