Quantum Nondemolition Squeezing of a Nanomechanical Resonator
We show that the nanoresonator position can be squeezed significantly below the ground state level by measuring the nanoresonator with a quantum point contact or a single-electron transistor and applying a periodic voltage across the detector. The mechanism of squeezing is basically a generalization of quantum nondemolition measurement of an oscillator to the case of continuous measurement by a weakly coupled detector. The quantum feedback is necessary to prevent the "heating" due to measurement back-action. We also discuss a procedure of experimental verification of the squeezed state.
Additional Information© 2005 IEEE. Manuscript received June 15, 2004; revised August 7, 2004. The work of R. Ruskov and A. N. Korotkov was supported by the National Security Agency and the Advanced Research and Development Activity under ARO Grant DAAD 19-01-1-0491. The work of K. Schwab was supported by the National Security Agency.
Published - 01381407.pdf