Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Uffink, Jos"'
Autor:
Seevinck, Michael, Uffink, Jos
Publikováno v:
Phys. Rev. A 78, 032101 (2008)
We explore the subtle relationships between partial separability and entanglement of subsystems in multiqubit quantum states and give experimentally accessible conditions that distinguish between various classes and levels of partial separability in
Externí odkaz:
http://arxiv.org/abs/0710.5326
Autor:
Seevinck, Michael, Uffink, Jos
Publikováno v:
Phys. Rev. A 76, 042105 (2007)
By introducing a quantitative `degree of commutativity' in terms of the angle between spin-observables we present two tight quantitative trade-off relations in the case of two qubits: First, for entangled states, between the degree of commutativity o
Externí odkaz:
http://arxiv.org/abs/quant-ph/0703134
Publikováno v:
Physical Review A 72, 014101 (2005)
A recent paper [M. Seevinck and J. Uffink, Phys. Rev. A 65, 012107 (2002)] presented a bound for the three-qubit Mermin inequality such that the violation of this bound indicates genuine three-qubit entanglement. We show that this bound can be improv
Externí odkaz:
http://arxiv.org/abs/quant-ph/0505100
Autor:
Uffink, Jos
This letter presents quantum mechanical inequalities which distinguish, for systems of $N$ spin-$\half$ particles ($N>2$), between fully entangled states and states in which at most $N-1$ particles are entangled. These inequalities are stronger than
Externí odkaz:
http://arxiv.org/abs/quant-ph/0201070
Autor:
Seevinck, Michael, Uffink, Jos
Publikováno v:
Phys. Rev. A, volume 65, 012107 (2002)
We point out a loophole problem in some recent experimental claims to produce three-particle entanglement. The problem consists in the question whether mixtures of two-particle entangled states might suffice to explain the experimental data. In an at
Externí odkaz:
http://arxiv.org/abs/quant-ph/0107072
Autor:
Uffink, Jos
The aim of this article is to analyze the relation between the second law of thermodynamics and the so-called arrow of time. For this purpose, a number of different aspects in this arrow of time are distinguished, in particular those of time-(a)symme
Externí odkaz:
http://arxiv.org/abs/cond-mat/0005327
Autor:
Uffink, Jos, Hilgevoord, Jan
Publikováno v:
Physica B151 (1988) 309
Quantitative measures are introduced for the indistinguishability $U$ of two quantum states in a given measurement and the amount of interference $I$ observable in this measurement. It is shown that these measures obey an inequality $U\geq I$ which c
Externí odkaz:
http://arxiv.org/abs/quant-ph/9904003
Autor:
Uffink, Jos
Publikováno v:
Phys Rev A 60, to appear
A new type of procedures, called protective measurements, has been proposed by Aharonov, Anandan and Vaidman. These authors argue that a protective measurement allows the determination of arbitrary observables of a single quantum system and claim tha
Externí odkaz:
http://arxiv.org/abs/quant-ph/9903007
Autor:
Uffink, Jos
Publikováno v:
Philosophy of Science, 1999 Sep 01. 66, S512-S525.
Externí odkaz:
https://www.jstor.org/stable/188795
