Entanglement thresholds for displaying the quantum nature of teleportation

Quantum Teleportation and Entanglement

Quantum Teleportation and Entanglement

While physicists are continually looking for ways to unify the theory of relativity, which describes large-scale phenomena, with quantum theory, which describes small-scale phenomena, computer scientists are searching for technologies to build the quantum computer using Quantum Information. In August 2013, the achievement of "fully deterministic" quantum teleportation, using a hybrid technique,...

Superadditivity of distillable entanglement From Quantum Teleportation

We show that the phenomenon of superadditivity of distillable entanglement observed in multipartite quantum systems results from the consideration of states created during the execution of the standard end-to-end quantum teleportation protocol (and a few additional local operations and classical communication (LOCC) steps) on a linear chain of singlets. Some of these intermediate states are ten...

Wavelength Teleportation via Distant Quantum Entanglement

Recently, we have shown theoretically as well as experimentally how the phase of an electromagnetic field can be determined by measuring the population of either of the two states of a two-level atomic system excited by this field, via the so-called Bloch-Siegert oscillation resulting from the interference between the coand counter-rotating excitations. Here, we show how a degenerate entangleme...

Quantum teleportation and entanglement swapping for spin systems

We analyse quantum teleportation (QT) and entanglement swapping (ES) for spin systems. If the permitted operations are restricted to the Ising interaction, plus local rotations and spin measurements, high-fidelity teleportation is achievable for quantum states that are close to the maximally weighted spin state. ES is achieved, and is maximized for a combination of entangled states and Bell mea...