Search Results - "Hiesmayr, Beatrix"
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Free versus bound entanglement, a NP-hard problem tackled by machine learning
Published in Scientific reports (05-10-2021)“…Entanglement detection in high dimensional systems is a NP-hard problem since it is lacking an efficient way. Given a bipartite quantum state of interest free…”
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Witnessing Entanglement In Compton Scattering Processes Via Mutually Unbiased Bases
Published in Scientific reports (03-06-2019)“…We present a quantum information theoretic version of the Klein-Nishina formula. This formulation singles out the quantity, the a priori visibility, that…”
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3
Bound entanglement is not Lorentz invariant
Published in Scientific reports (11-07-2023)“…Bound entanglement, in contrast to free entanglement, cannot be distilled into maximally entangled states by two local observers applying measurements and…”
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Special features of the Weyl–Heisenberg Bell basis imply unusual entanglement structure of Bell-diagonal states
Published in New journal of physics (01-01-2024)“…Abstract Bell states are of crucial importance for entanglement based methods in quantum information science. Typically, a standard construction of a complete…”
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5
Comparing bound entanglement of bell diagonal pairs of qutrits and ququarts
Published in Scientific reports (04-02-2023)“…We compare the classification as entangled or separable of Bell diagonal bipartite qudits with positive partial transposition (PPT) and their properties for…”
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Almost complete solution for the NP-hard separability problem of Bell diagonal qutrits
Published in Scientific reports (21-07-2022)“…With a probability of success of 95% we solve the separability problem for Bell diagonal qutrit states with positive partial transposition (PPT). The…”
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7
Linking entanglement detection and state tomography via quantum 2-designs
Published in New journal of physics (18-01-2019)“…We present an experimentally feasible and efficient method for detecting entangled states with measurements that extend naturally to a tomographically complete…”
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Genuine Multipartite Entanglement in the 3-Photon Decay of Positronium
Published in Scientific reports (10-11-2017)“…The electron-positron annihilation into two photons is a standard technology in medicine to observe e.g. metabolic processes in human bodies. A new tomograph…”
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A quantum-information theoretic analysis of three-flavor neutrino oscillations: Quantum entanglement, nonlocal and nonclassical features of neutrinos
Published in The European physical journal. C, Particles and fields (01-10-2015)“…Correlations exhibited by neutrino oscillations are studied via quantum-information theoretic quantities. We show that the strongest type of entanglement,…”
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Detection of high-dimensional genuine multipartite entanglement of mixed states
Published in Physical review letters (28-05-2010)“…We derive a general framework to identify genuinely multipartite entangled mixed quantum states in arbitrary-dimensional systems and show in exemplary cases…”
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A quantum-information theoretic analysis of three-flavor neutrino oscillations
Published in The European physical journal. C, Particles and fields (13-10-2015)“…Correlations exhibited by neutrino oscillations are studied via quantum-information theoretic quantities. We show that the strongest type of entanglement,…”
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12
On the structure of mirrored operators obtained from optimal entanglement witnesses
Published in Scientific reports (03-07-2023)“…Entanglement witnesses (EWs) are a versatile tool in the verification of entangled states. The framework of mirrored EW doubles the power of a given EW by…”
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13
Complementarity reveals bound entanglement of two twisted photons
Published in New journal of physics (20-08-2013)“…We demonstrate the detection of bipartite bound entanglement as predicted by the Horodecki's in 1998. Bound entangled states, being heavily mixed entangled…”
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14
CSL Collapse Model Mapped with the Spontaneous Radiation
Published in Entropy (Basel, Switzerland) (01-07-2017)Get full text
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15
Constraints on the noise in dynamical reduction models
Published in Physics letters. A (22-03-2016)“…The dynamics of a quantum system with internal degrees of freedom undergoing spontaneous collapse in the position basis are analysed; e.g., neutral mesons or…”
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Experimental investigation on the geometry of GHZ states
Published in Scientific reports (16-10-2017)“…Greenberger-Horne-Zeilinger (GHZ) states and their mixtures exhibit fascinating properties. A complete basis of GHZ states can be constructed by properly…”
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Mirrored entanglement witnesses
Published in npj quantum information (03-02-2020)“…Entanglement detection, which signifies the task of distinguishing entangled states from separable states, can be generally performed by realizing entanglement…”
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Positronium imaging with the novel multiphoton PET scanner
Published in Science advances (15-10-2021)“…In vivo assessment of cancer and precise location of altered tissues at initial stages of molecular disorders are important diagnostic challenges. Positronium…”
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Can a spontaneous collapse in flavour oscillations be tested at KLOE?
Published in EPJ Web of conferences (01-01-2018)“…Why do we never see a table in a superposition of here and there? This problem gets a solution by so called collapse models assuming the collapse as a…”
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Journal Article Conference Proceeding -
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Mutually unbiased bases and bound entanglement
Published in Physica scripta (01-04-2014)“…In this contribution we relate two different key concepts: mutually unbiased bases (MUBs) and entanglement. We provide a general toolbox for analyzing and…”
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