FINDING: Quantum teleportation is a protocol for transferring an unknown quantum state via shared entanglement and classical communication — not a physical transport of matter. The Oxford breakthrough (video 4) and the "trick of description" video (6) confirm this is a state-transfer, not a Star Trek-style transporter. | MATH: The core protocol uses a Bell state ∣Φ+⟩=21(∣00⟩+∣11⟩). Teleportation requires: (1) a 2-qubit entangled pair, (2) a Bell-state measurement on the sender's side (projecting onto the 4 Bell basis states), (3) 2 classical bits of information transmitted, (4) one of 4 unitary corrections {I,X,Z,XZ} applied by the receiver. The fidelity of teleportation without entanglement is bounded by 2/3 (classical limit); with perfect entanglement, fidelity = 1. The state transfer is instantaneous in the quantum channel but the classical bit transmission enforces the speed-of-light limit c. | CONNECTION: The Bell basi Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
In the present paper some consequences of the information quantum structure are considered. It is pointed out that objects of the material World are build of information quanta. Note that the concept of matter never was and apparently cannot be defined as a fundamental concept, but we customarily use it forgetting the logic. In other words, the matter and the information is the same entity appearing differently at different situations, or, exactly, at different kinds of observation. In this pair the INFORMATION is the FUNDAMENTAL concept, while the matter is the secondary one. The teleportation is considered from this point of view, which means that in all cases, including the material object teleportation, at the end it is reduced to the information teleportation.
NeuroQuantology | September 2012 | Volume 10 | Issue 3 | Page 532-536
We put forward and demonstrate experimentally a quantum-inspired protocol that allows us to quantify the degree of similarity between two spatial shapes embedded in two optical beams without the need to measure the amplitude and phase across each beam. Instead the sought-after information can be retrieved by measuring the degree of polarization of the combined optical beam, a measurement that is much easier to implement experimentally. The protocol makes use of non-separable optical beams, whose main trait is that different degrees of freedom (polarization and spatial shape here) cannot be described independently. One important characteristic of the method described is that it allows us to compare two unknown spatial shapes.