71 research outputs found
The universe as quantum computer
This article reviews the history of digital computation, and investigates
just how far the concept of computation can be taken. In particular, I address
the question of whether the universe itself is in fact a giant computer, and if
so, just what kind of computer it is. I will show that the universe can be
regarded as a giant quantum computer. The quantum computational model of the
universe explains a variety of observed phenomena not encompassed by the
ordinary laws of physics. In particular, the model shows that the the quantum
computational universe automatically gives rise to a mix of randomness and
order, and to both simple and complex systems.Comment: 16 pages, LaTe
Entanglement Availability Differentiation Service for the Quantum Internet
A fundamental concept of the quantum Internet is quantum entanglement. In a
quantum Internet scenario where the legal users of the network have different
priority levels or where a differentiation of entanglement availability between
the users is a necessity, an entanglement availability service is essential.
Here we define the entanglement availability differentiation (EAD) service for
the quantum Internet. In the proposed EAD framework, the differentiation is
either made in the amount of entanglement with respect to the relative entropy
of entanglement associated with the legal users, or in the time domain with
respect to the amount of time that is required to establish a maximally
entangled system between the legal parties. The framework provides an efficient
and easily-implementable solution for the differentiation of entanglement
availability in experimental quantum networking scenarios.Comment: 18 pages, Journal-ref: Scientific Report
- …