Modeling Quantum Optomechanical STIRAP

arXiv (Cornell University)

Abstract

Quantum optomechanical STIRAP (Stimulated Raman Adiabatic Passage) is investigated for a system of two mechanical modes coupled to an optical mode. We show analytically that in a system without loss, fractional STIRAP can generate a mechanical Bell state from a single phonon Fock state of one of the mechanical modes with the other mechanical mode in the vacuum state, and a product state from a coherent state. Relative phases between Fock basis components in the final state of STIRAP are determined by the phonon-number parity of the initial state. Furthermore, the system is numerically studied to determine the effects of dissipation, and it is concluded that high-fidelity entanglement can be achieved via fractional STIRAP using state-of-the-art cryogenic cooling and mechanical devices. Finally, an interferometric protocol using time-reversed fractional STIRAP is proposed to quantify entanglement between two mechanical modes.

Authors 4

1. Ian Hedgepeth

   University of California, Santa Barbara

   Affiliation as printed

   Department of Physics , University of California , Santa Barbara , California 93106 , USA and

2. Youqiu Zhan

   University of California, Santa Barbara

   Affiliation as printed

   Department of Physics , University of California , Santa Barbara , California 93106 , USA and

3. Vitaly Fedoseev Aachen Huygens-Kamerlingh Onnes Laboratory

   Leiden University

   Affiliation as printed

   Huygens-Kamerlingh Onnes Laboratory , Universiteit Leiden , 2333 CA Leiden , The Netherlands

4. Dirk Bouwmeester Aachen Huygens-Kamerlingh Onnes Laboratory

   Leiden University · University of California, Santa Barbara

   Affiliation as printed

   Department of Physics , University of California , Santa Barbara , California 93106 , USA and

   Huygens-Kamerlingh Onnes Laboratory , Universiteit Leiden , 2333 CA Leiden , The Netherlands