On circuit models for quantum-classical networks

✍ Scribed by Árpád I. Csurgay

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 139 KB
• Volume: 35
• Category: Article
• ISSN: 0098-9886
• DOI: 10.1002/cta.444

✦ Synopsis

Abstract

Physics is not scale invariant, and today the scale of atoms and molecules challenges designers of machines in which quantum effects have dominant sway. What role could circuit theory play in designing machines described by quantum‐classical models? Classical equivalent circuits do exist for systems composed of metal contacted and wired devices, such as resonant tunneling diodes, single electron transistors, metal–insulator–metal diodes, etc. circuits, but not for quantum‐entangled networks, such as multi‐quantum‐state atoms.

If devices were not contacted and wired by macroscopic metals, i.e. devices were classically field coupled, then generalized circuit models can be introduced. Case studies have been presented on the role of circuit models in quantum‐classical systems. However, there are no ideal circuit elements capable of capturing the port properties of quantum‐mechanical and/or quantum‐optical subsystems and their coupling to classical waveguides or cavities. Copyright © 2007 John Wiley & Sons, Ltd.