Emergent Quantum Jumps in a Nano-Electro-Mechanical System
Quantum Physics
2009-11-13 v3 Mesoscale and Nanoscale Physics
Abstract
We describe a nano-electromechnical system that exhibits the "retroactive" quantum jumps discovered by Mabuchi and Wiseman [Phys. Rev. Lett. 81, 4620 (1998)]. This system consists of a Cooper-pair box coupled to a nano-mechanical resonator, in which the latter is continuously monitored by a single-electron transistor or quantum point-contact. Further, we show that these kinds of jumps, and the jumps that emerge in a continuous quantum non-demolition measurement are one and the same phenomena. We also consider manipulating the jumps by applying feedback control to the Cooper-pair box.
Cite
@article{arxiv.quant-ph/0606060,
title = {Emergent Quantum Jumps in a Nano-Electro-Mechanical System},
author = {Kurt Jacobs and Pavel Lougovski},
journal= {arXiv preprint arXiv:quant-ph/0606060},
year = {2009}
}
Comments
7 pages, revtex4, 1 eps figure. v2 and v3: presentation altered, references added