منابع مشابه
Entangled Rings
Consider a ring of N qubits in a translationally invariant quantum state. We ask to what extent each pair of nearest neighbors can be entangled. Under certain assumptions about the form of the state, we find a formula for the maximum possible nearest-neighbor entanglement. We then compare this maximum with the entanglement achieved by the ground state of an antiferromagnetic ring consisting of ...
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As the world becomes more interdependent and computing growsmore collaborative, there is a need for new abstractions and tools tohelp users work together. We recently introduced entangled queries– a mechanism for information exchange between database queries[6]. In this paper, we introduce entangled transactions, units ofwork similar to traditional transactions that however ...
متن کاملEntangled messages
It is sometimes necessary to send copies of the same email to different parties, but it is impossible to ensure that if one party reads the message the other parties will bound to read it. We propose an entanglement based scheme where if one party reads the message the other party will bound to read it simultaneously. It would be interesting thing if one transmits same or different messages to ...
متن کاملEntangled Chains
Consider an infinite collection of qubits arranged in a line, such that every pair of nearest neighbors is entangled: an “entangled chain.” In this paper we consider entangled chains with translational invariance and ask how large one can make the nearest neighbor entanglement. We find that it is possible to achieve an entanglement of formation equal to 0.285 ebits between each pair of nearest ...
متن کاملEntangled Graphs
In this paper we prove a separability criterion for mixed states in Cp Cq . We also show that the density matrix of a graph with only one entangled edge is entangled.
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ژورنال
عنوان ژورنال: Nature Physics
سال: 2008
ISSN: 1745-2473,1745-2481
DOI: 10.1038/nphys984