SQUID systems for macroscopic quantum coherence and quantum computing

Author

Carelli, Pasquale ; Castellano, Maria Gabriella ; Chiarello, Fabio ; Cosmelli, Carlo ; Leoni, Roberto ; Torrioli, Guido

Author_Institution

Dipt. di Ingegneria Elettrica, Aquila Univ., Italy

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

210

Lastpage

214

Abstract

Among the various devices proposed as elements of a quantum computer, the rf-SQUID is a very promising candidate. In fact, systems based on this element can be adjusted in situ, can be coupled by means of superconducting transformers, can be prepared individually and measured with superconducting electronics. Moreover, many progresses were made in these years which showed quantum effects in this system. The present paper describes a complete device developed in order to get a direct measurement of the quantum coherent oscillation. The knowledge of this time, together with its limiting factors, is a prerequisite for fabricating a qubit based on rf-SQUIDs

Keywords

SQUIDs; quantum computing; RF SQUID; macroscopic quantum coherence; quantum coherent oscillation; quantum computing; qubit; superconducting transformers; Atom optics; Quantum computing; Quantum entanglement; Quantum mechanics; SQUIDs; Semiconductor device measurement; Solid state circuits; Telephony; Time measurement; Tunneling;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919321

Filename

919321