Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-03-10
Nature Phys. 4, 635 (2008)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 5 figures
Scientific paper
10.1038/nphys992
Recent advances in the fabrication of microelectromechanical systems (MEMS) and their evolution into nanoelectromechanical systems (NEMS) have allowed researchers to measure extremely small forces, masses, and displacements. In particular, researchers have developed position transducers with resolution approaching the uncertainty limit set by quantum mechanics. The achievement of such resolution has implications not only for the detection of quantum behavior in mechanical systems, but also for a variety of other precision experiments including the bounding of deviations from Newtonian gravity at short distances and the measurement of single spins. Here we demonstrate the use of a quantum point contact (QPC) as a sensitive displacement detector capable of sensing the low-temperature thermal motion of a nearby micromechanical cantilever. Advantages of this approach include versatility due to its off-board design, compatibility with nanoscale oscillators, and, with further development, the potential to achieve quantum limited displacement detection.
Degen C. L.
Goldhaber-Gordon David
Jura M. P.
Mamin H. J.
Poggio Martino
No associations
LandOfFree
An off-board quantum point contact as a sensitive detector of cantilever motion 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 An off-board quantum point contact as a sensitive detector of cantilever motion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An off-board quantum point contact as a sensitive detector of cantilever motion will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-379281