In a recent letter, Gaidarzhy et al. claim to have observed evidence for quantized displacements of a nanomechanical oscillator. We contend that the evidence, analysis, claims, and conclusions presented are contrary to expectations from fundamentals of quantum mechanics and elasticity theory, and that the method used by the authors is unsuitable in principle to observe the quantized energy states of a nanomechanical structure.

arXiv:quant-ph/0503018Mar 2, 20050 citations

Comment on “Evidence for Quantized Displacement in Macroscopic Nanomechanical Oscillators”

Keith Schwab, M. P. Blencowe, Michael Lee Roukes +4 more

In a recent Letter, Gaidarzhy et al. [1] claim to have observed evidence for "quantized displacements" of a high-order mode of a nanomechanical oscillator. We contend that the methods employed by the authors are unsuitable in principle to observe such states for any harmonic mode.

Physical Review LettersDec 5, 200519 citations