Yingdan Wang, McGill
Abstract
The fields of Optomechanics and Electromechanics are interested in the physics of systems where a mechanical resonator is coupled to either a driven optical cavity, or a driven electronic circuit. In the past few years, these fields have achieved significant progress--ground state cooling and many-photon strong coupling have been realized in experiments on both optomechanical and electromechanical systems. This progress may soon enable a potentially powerful application of these systems: the ability to transfer quantum states between optical cavities and microwave-frequency electrical systems, as well as between electromagnetic cavities having very different frequencies. Such optomechanically-enabled state transfer could allow one to combine the complimentary advantages of both microwaves and optics, and become a key component in quantum information processing networks. In this talk, I'll start with a brief introduction to Opto-electro-mechanics and its current progress. Then I will talk about different state transfer schemes and their respective advantages and disadvantages under quantum noise. In particular, I will show that this system possesses an effective "mechanically-dark mode" which is immune to mechanical dissipation; utilizing this feature allows highly efficient transfer of intra-cavity states, as well as of itinerant photon states.