2019/01/31 by G. D. de Moraes Neto, G. D. De Moraes Neto, V. Montenegro +4
Engineering · Physics and Astronomy · #Degrees of freedom (physics and chemistry) #Dissipative system #Fock space #Fock state #Force Microscopy Techniques and Applications #Hamiltonian (control theory) #Mechanical and Optical Resonators #Nonlinear system #Optomechanics #Phonon #Photon #Photonic and Optical Devices #Photonics #Physics #Quantum #Quantum decoherence #Quantum mechanics #Quantum state #Sideband #quant-ph
paper · pdf · doi:10.1103/physreva.99.043836
published as Phys. Rev. A 99, 043836 (2019)
arxiv created 2019/01/31 · openalex created_date 2019/02/21 · openalex publication_date 2019/04/25 · arxiv updated 2019/05/01 · openalex updated_date 2026/08/05
We put forward a deterministic dissipative protocol to prepare phonon Fock states in nonlinear quantum optomechanical devices. The system is composed of a mechanical mode interacting with an optical field via radiation pressure, whereas the light mode is laser driven in the resolved blue-sideband regime. To keep our results tractable, we switch to an interaction picture in a displaced basis, where the effective Hamiltonian exhibits the selective photon-phonon interaction explicitly. After proper parameter adjustment and similarly to cavity-cooling schemes, the quantum evolution allows steering of the mechanical degree of freedom to the desired Fock state by directing the optical excitations dynamically towards the target phonon state. The numerical results, including decoherence on both the mechanical and the optical degrees of freedom, prove to be quite robust in the good- and bad-cavity regimes, with fidelities exceeding 95%. Finally, characterization of the achieved nonclassicality, as well as the limitations and feasibility of our protocol under experimental parameters, is also discussed.