Ground state cooling of mechanical resonators

Details Ground state cooling of mechanical resonators Ground state cooling of mechanical resonators

2003-10-09

arxiv.org/abs/cond-mat/0310229v2

Phys. Rev. B 69, 125339 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

A subsection on cooling by ac-voltage added (12 pages, 10 eps figures)

Scientific paper

10.1103/PhysRevB.69.125339

We propose an application of a single Cooper pair box (Josephson qubit) for active cooling of nanomechanical resonators. Latest experiments with Josephson qubits demonstrated that long coherence time of the order of microsecond can be achieved in special symmetry points. Here we show that this level of coherence is sufficient to perform an analog of the well known in quantum optics ``laser'' cooling of a nanomechanical resonator capacitively coupled to the qubit. By applying an AC driving to the qubit or the resonator, resonators with frequency of order 100 MHz and quality factors higher than $10^3$ can be efficiently cooled down to their ground state, while lower frequency resonators can be cooled down to micro-Kelvin temperatures. We also consider an alternative setup where DC-voltage-induced Josephson oscillations play the role of the AC driving and show that cooling is possible in this case as well.

Affiliated with

Also associated with

No associations

Rating

Ground state cooling of mechanical resonators does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ground state cooling of mechanical resonators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground state cooling of mechanical resonators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-216491