We identify a design pattern for concurrent data structures, called teleportation, that uses besteffort hardware transactional memory to speed up certain kinds of legacy concurrent data structures. Teleportation unifies and explains several existing data structure designs, and it serves as the basis for novel approaches to reducing the memory traffic associated with fine-grained locking, and wi...

The topics of the paper are: a) Some anti-linear maps governing EPR tasks if no reference bases are distinguished. b) Imperfect quantum teleportation and the composition rule. The ancilla is supposed pure but otherwise arbitrary. c) Quantum teleportation with distributed measurements. d) Remarks on EPR with a mixed state, triggered by a Lüders measurement.

Quantum coherence and quantum entanglement are two different manifestations of the superposition principle. In this article we show that right choice basis to be used estimate is separable basis. The estimated using Bell does not represent in system, since there a system due states. We first compute qubit mixed states prepared one from computational l1-norm coherence, measured concurrence mixed...

Quantum teleportation is the faithful transfer of quantum states between systems, relying on the prior establishment of entanglement and using only classical communication during the transmission. We report teleportation of quantum information between atomic quantum memories separated by about 1 meter. A quantum bit stored in a single trapped ytterbium ion (Yb+) is teleported to a second Yb+ at...

Transfer of entanglement and information is studied for quantum teleportation of an unknown entangled state through noisy quantum channels. We find that the quantum entanglement of the unknown state can be lost during the teleportation even when the channel is quantum correlated. We introduce a fundamental parameter of correlation information which dissipates linearly during the teleportation t...

We address continuous variable quantum teleportation in Gaussian quantum noisy channels, either thermal or squeezed-thermal. We first study the propagation of twin-beam and evaluate a threshold for its separability. We find that the threshold for purely thermal channels is always larger than for squeezed-thermal ones. On the other hand, we show that squeezing the channel improves teleportation ...

Very recently we have witnessed a new development of quantum information, the so-called continuous variable (CV) quantum information theory. Such a further development has been mainly due to the experimental and theoretical advantages offered by CV systems, i.e., quantum systems described by a set of observables, like position and momentum, which have a continuous spectrum of eigenvalues. Accor...