Speeding up adiabatic state conversion in optomechanical systems. (22nd May 2019)

• Record Type: Journal Article
• Authors: Zhang, Feng-Yang; Li, Wen-Lin; Yan, Wei-Bin; Xia, Yan
• Is Part Of: Journal of physics. Volume 52:Number 11(2019:Jun. 14)
• Publication Date: 2019-05-22
• Subjects: quantum information -- optomechanical systems -- speeding up adiabatic state conversion; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/ab08d8
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: Adiabatic state conversion in optomechanical systems requires the evolution process to be very slow, which limits its application in quantum information processing. In this paper, we explicitly show that speeding up adiabatic state conversion in optomechanical systems can be implemented. For the case that each cavity is driven far from the red-detuned mechanical sideband, the high-efficiency population transfer between cavity modes is achieved via an additional Hamiltonian  a ( t ), whereas the population of the mechanical resonator can be effectively inhibited. In the meanwhile, in the case of each cavity driven near the red-detuned mechanical sideband, the population transfers can be realized by varying the modified optomechanical couplings without an additional Hamiltonian. Numerical simulation demonstrates that the transfer is robust to the system decays.