Entangled World

Gregory S. Duane

Partial entanglement may provide enough connections in the universe to satisfy the definition of a small world. To investigate this possibility, we define a network of particles on a given space-like hyper-surface with a long-range link between any two particles that are connected by a chain of exchanged particles involving a limited number of interactions. Considering the mean free paths of particles in different regions of space and the resulting probability distributions of entanglement connections vs. distance, we find evidence of small-world or random network structure on all but the smallest scales - corresponding to stars and planets - on which other types of connections would need to be added to complete the small world picture.

Stefano Mancini, David Vitali, P. Tombesi +1 more

Abstract We show that bouncing laser beams can entangle massive oscillators like movable mirrors. Such entanglement results robust against thermal noise and detectable with common optomechanical apparatus. Thus, a quantum strangeness (entanglement) can be brought to the macroscopic, everyday, world.

Sabine Himmelsbach

Ciarán Hughes, Joshua Isaacson, Anastasia Perry +2 more

Abstract So far, we have discussed the manipulation and measurement of a single qubit. However, quantum entanglement is a physical phenomenon that occurs when multiple qubits are correlated with each other. Entanglement can have strange and useful consequences that could make quantum computers faster than classical computers. Qubits can be “entangled,” providing hidden quantum information that does not exist in the classical world. It is this entanglement that is one of the main advantages of the quantum world!

Anil Ananthaswamy