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Emergent Quantum Jumps in a Nano-Electro-Mechanical System

Kurt Jacobs·Pavel Lougovski
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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.

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Kurt Jacobs, Pavel Lougovski. 2007-10-23. Emergent Quantum Jumps in a Nano-Electro-Mechanical System. https://doi.org/10.1088/1751-8113%2F40%2F46%2Ff02

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