A realistic experiment to demonstrate macroscopic quantum coherence

Citation
Mj. Feldman et Mf. Bocko, A realistic experiment to demonstrate macroscopic quantum coherence, PHYSICA C, 350(3-4), 2001, pp. 171-176
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
350
Issue
3-4
Year of publication
2001
Pages
171 - 176
Database
ISI
SICI code
0921-4534(20010215)350:3-4<171:ARETDM>2.0.ZU;2-H
Abstract
According to quantum theory, microscopic objects exist in a superposition o f distinct states until they are "observed". Nobody knows whether such quan tum coherence can actually exist in a macroscopic system. In the experiment described here, a superconducting quantum interference device is extremely well isolated from any interaction with internal or external modes, and a superposition state can be demonstrated even if it lasts for less than 1 ns . This is accomplished by using superconducting digital electronic circuitr y as the experimental apparatus. If successful, it is the first step toward a future full-scale quantum computer fabricated using integrated circuit m anufacturing techniques. (C) 2001 Elsevier Science B.V. All rights reserved .