Emergent Quantum Jumps in a Nano-Electro-Mechanical System

Details Emergent Quantum Jumps in a Nano-Electro-Mechanical System Emergent Quantum Jumps in a Nano-Electro-Mechanical System

2006-06-07

arxiv.org/abs/quant-ph/0606060v3

J. Phys. A: Math. Theor. 40, F987 (2007)

Physics

Quantum Physics

7 pages, revtex4, 1 eps figure. v2 and v3: presentation altered, references added

Scientific paper

10.1088/1751-8113/40/46/F02

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.

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