Chain of Superconducting Loops as a Possible Quantum Register

TL;DR

This paper explores the potential of using a chain of superconducting loops as a quantum register, emphasizing macroscopic quantum phenomena and addressing misconceptions about entanglement and superposition.

Contribution

It proposes a novel macroscopic quantum register design using superconducting loops and clarifies misunderstandings about entanglement in such systems.

Findings

A chain of superconducting loops can function as a quantum register.

Classical interactions are insufficient to explain EPR correlations.

Superposition of macroscopically distinct states is feasible in this system.

Abstract

The idea of the quantum computation is based on paradoxical principles of quantum physics, superposition and entanglement of quantum states. This idea looks well-founded on the microscopic level in spite of the absence of an universally recognized interpretation of these paradoxical principles since they were corroborated over and over again by reliable experiments on the microscopic level. But the technology can not be able in the near future to work on the microscopic level. Therefore macroscopic quantum phenomenon - superconductivity is very attractive for the realization of the idea of quantum computer. It is shown in the present paper that a chain of superconducting loops can be only possible quantum register. The proposals by some authors to provide the EPR correlation with help of a classical interaction witness the misunderstanding of the entanglement essence. The problem of the possibility of superposition of macroscopically distinct states is considered.