- Hitchin functionals are related to measures of entanglement Péter Lévay, Gábor Sárosi (Submitted on 22 Jun 2012) According to the Black Hole/Qubit Correspondence (BHQC) certain black hole entropy formulas in...
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Three qubits can be entangled in two inequivalent ways

W. Dür, G. Vidal, J. I. Cirac

(Submitted on 26 May 2000 (v1), last revised 8 Jun 2000 (this version, v2))Invertible local transformations of a multipartite system are used to define equivalence classes in the set of entangled states. This classification concerns the entanglement properties of a single copy of the state. Accordingly, we say that two states have the same kind of entanglement if both of them can be obtained from the other by means of local operations and classical communcication (LOCC) with nonzero probability. When applied to pure states of a three-qubit system, this approach reveals the existence of two inequivalent kinds of genuine tripartite entanglement, for which the GHZ state and a W state appear as remarkable representatives. In particular, we show that the W state retains maximally bipartite entanglement when any one of the three qubits is traced out. We generalize our results both to the case of higher dimensional subsystems and also to more than three subsystems, for all of which we show that, typically, two randomly chosen pure states cannot be converted into each other by means of LOCC, not even with a small probability of success.

- Oliver Thewalt commented on a bookmark Statistical distinguishability of some non-commuting quantum states can be broadcasthttp://159.226.47.19/academic/workshop/workshop10/%C2%E6%CB%B3%C1%FA.pdf
- Oliver Thewalt bookmarked Statistical distinguishability of some non-commuting quantum states can be broadcastStatistical distinguishability of some non-commuting quantum states can be broadcast Xiao-Ming Lu, Zhe Sun, Xiaoguang Wang, Shunlong Luo, C. H. Oh (Submitted on 13 Jun 2012) It is known that a family of quantum states cannot be broadcast if they...
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- Oliver Thewalt commented on the video OPPENHEIMER LECTURE: The Higgs Particle: Pivot Of Symmetry And Masshttp://online.itp.ucsb.edu/online/colloq/fritzsch1/ Power Point (*.ppt)http://www.staff.science.uu.nl/~hooft101/lectures/PowerPoint/Black_Holes_QM/
- Oliver Thewalt added a new video OPPENHEIMER LECTURE: The Higgs Particle: Pivot Of Symmetry And MassOf course, in science we use different words. In this lecture it is explained what this mysterious object really is and why it is needed in our theories, even if it has little to do with God. Using the most powerful particle accelerator in the...
- Oliver Thewalt commented on the video MIT 8.224 Exploring Black Hole by Prof. Edmund Bertschingerhttp://ocw.mit.edu/courses/physics/8-224-exploring-black-holes-general-relativity-astrophysics-spring-2003/
- Oliver Thewalt added a new video MIT 8.224 Exploring Black Hole by Prof. Edmund BertschingerStudy of physical effects in the vicinity of a black hole as a basis for understanding general relativity, astrophysics, and elements of cosmology. Extension to current developments in theory and observation. Energy and momentum in flat spacetime;...