The Nanophotonics Lab welcomes our newest group member, Felipe Santos (or Felipinho!). Felipe's research will be focused on investigating the quantum nature of opto-mechanical oscillators.
Viewpoint: Seeing the “Quantum” in Quantum Zero-Point Fluctuations
Department of Physics, McGill University, Montréal, Québec H3A 2T8, Canada
Physics, 5, 8 (2012)
A technique from ion spectroscopy reveals the quantum nature of a mechanical system at low temperature.
Quantum zero-point motion, the fluctuation in the position of an object necessitated by the Heisenberg uncertainty principle, is among the most basic of quantum phenomena. While the origin of such fluctuations may be textbook material, unambiguously detecting them in a large mechanical structure (i.e., large compared to atomic scales) and, moreover, detecting their quantum nature, have remained elusive goals. These two tasks have now been accomplished by Amir Safavi-Naeini and co-workers at the California Institute of Technology in Pasadena. See more
Observation of Quantum Motion of a Nanomechanical Resonator
Amir H. Safavi-Naeini, Jasper Chan, Jeff T. Hill, Thiago P. Mayer Alegre, Alex Krause, and Oskar Painter
Physical Review Letters, 108, 033602 (2012)
See accompanying Physics Viewpoint
In this Letter we use resolved sideband laser cooling to cool a mesoscopic mechanical resonator to near its quantum ground state (phonon occupancy 2.6 +/- 0.2), and observe the motional sidebands generated on a second probe laser. Asymmetry in the sideband amplitudes provides a direct measure of the displacement noise power associated with quantum zero-point ﬂuctuations of the nanomechanical resonator, and allows for an intrinsic calibration of the phonon occupation number.
Optomecânica de microcavidades: do quente ao frio
Thiago P. Mayer Alegre, Gustavo S. Wiederhecker
Physicae, 10, (2011)
O efeito mecânico da luz é amplamente usado em armadilhas ou “pinças” ópticas usadas na manipulação de micro partículas como células vivas, DNA e bactérias. Por este mesmo efeito, as paredes reﬂetoras de uma cavidade óptica são constantemente submetidas a uma pequena força gerada pelo campo eletromagnético conﬁnado na cavidade.
A chip-scale integrated cavity-electro-optomechanics platform
M. Winger, T. D. Blasius, T. P. Mayer Alegre, A. H. Safavi-Naeini, S. Meenehan, J. Cohen, S. Stobbe, and O. Painter
Optics Express, 19, 24905-24921 (2011)
We present an integrated optomechanical and electromechanical nanocavity, in which a common mechanical degree of freedom is coupled to an ultrahigh-Q photonic crystal defect cavity and an electrical circuit.
Quantum mechanics: The gentle cooling touch of light
Nature 478, 47-48 (06 October 2011)
Laser light has been used to cool a nanomechanical resonator to its lowest energy state. The result opens the door to testing the principles of quantum mechanics and to applications in quantum information processing. See more
Laser cooling of a nanomechanical oscillator into its quantum ground state
Jasper Chan, T. P. Mayer Alegre, Amir H. Safavi-Naeini, Jeff T. Hill, Alex Krause, Simon Gröblacher, Markus Aspelmeyer & Oskar Painter
Nature 478, 89-92 (06 October 2011)
The simple mechanical oscillator, canonically consisting of a coupled mass–spring system, is used in a wide variety of sensitive measurements, including the detection of weak forces and small masses.
Controlling photonic structures using optical forces
Gustavo S. Wiederhecker, Long Chen, Alexander Gondarenko & Michal Lipson
Nature 462, 633-636 (3 December 2009)
The use of optical forces to manipulate small objects is well known. Applications include the manipulation of living cells
Electromagnetically induced transparency and slow light with optomechanics
Amir H. Safavi-Naeini, Thiago P. Mayer Alegre, Jasper Chan, Matt Eichenfield, Martin Winger, Qiang Lin, Jeff T. Hill, Darrick E. Chang and Oskar Painter
Nature 472, 69–73 (07 April 2011)
Controlling the interaction between localized optical and mechanical excitations has recently become possible
Broadband tuning of optomechanical cavities
Gustavo S. Wiederhecker, Sasikanth Manipatruni, Sunwoo Lee, and Michal Lipson
Optics Express, Vol. 19, Issue 3, pp. 2782-2790 (2011)
We demonstrate broadband tuning of an optomechanical microcavity optical resonance