Nanomechanical inverse electromagnetically induced transparency and confinement of light in normal modes

New J. Phys. 16 033023 (2014). G S Agarwal1 and Sumei Huang2,3

1 Department of Physics, Oklahoma State University, Stillwater, OK 74078, USA .
2 Department of Physics, University of California, Merced, CA 95343, USA.
3 Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117583, Singapore.

ABSTRACT

We demonstrate the existence of the phenomenon of the inverse electromagnetically induced transparency (IEIT) in an opto mechanical system consisting of a nanomechanical mirror placed in an optical cavity. We show that two weak counter-propagating identical classical probe fields can be completely absorbed by the system in the presence of a strong coupling field so that the output probe fields are zero. The light is completely confined inside the cavity and the energy of the incoming probe fields is shared between the cavity field and creation of a coherent phonon and resides primarily in one of the polariton modes. The energy can be extracted by a perturbation of the external fields or by suddenly changing the Q of the cavity.

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Significance statement

It has been shown that a nanomechanical mirror within a Fabry-Perot cavity can totally reflect a weak probe field based on electromagnetically induced transparency. Here we show how this cavity optomechanical system can completely absorb two weak probe fields propagating in opposite directions in the presence of a strong coupling field. Such a system may function as optical switches and filters.

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