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SUMMARY:Cavity optomechanics in new regimes and with new devices: Single-p
 hoton strong coupling and dissipative interaction - Andreas Nunnenkamp (Un
 iversity of Basel)
DTSTART:20130124T141500Z
DTEND:20130124T151500Z
UID:TALK42845@talks.cam.ac.uk
CONTACT:Paul Skrzypczyk
DESCRIPTION:In optomechanical systems mechanical degrees of freedom are co
 upled to modes of the electromagnetic field inside optical or microwave re
 sonators. Work in this area is largely motivated by building more sensitiv
 e mass and force sensors\, providing long-range interaction between qubits
  in quantum information hardware\, and probing quantum mechanics at increa
 singly large mass and length scales [see recent reviews\, e.g. Physics Tod
 ay 65\, 29 (2012)].\n\nIn most setups the position of the mechanical oscil
 lator linearly modulates the cavity frequency. Several experiments are app
 roaching the limit where the radiation pressure of a single photon displac
 es the mechanical oscillator by more than its zero-point uncertainty. I wi
 ll show that this system exhibits photon-blockade physics and how this lea
 ds to non-Gaussian mechanical states and non-classical states of light [PR
 L 107\, 063602 (2011)].\n\nI will then discuss optomechanical systems wher
 e the position of the mechanical oscillator modulates the cavity line widt
 h rather than its frequency. Quantum noise interference leads to a Fano li
 ne shape in the force spectrum. Finally\, I will outline some implications
  for sideband cooling and the strong-coupling regime [arXiv:1211.7029].
LOCATION:MR4\, Centre for Mathematical Sciences
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