Unconventional phonon blockade via atom-photon-phonon interaction in hybrid optomechanical systems

Year: 2022

Type: article

Abstract: Phonon nonlinearities play an important role in hybrid quantum networks and on-chip quantum devices. We investigate the phonon statistics of a mechanical oscillator in hybrid systems composed of an atom and one or two standard optomechanical cavities. An efficiently enhanced atom-phonon interaction can be derived via a tripartite atom-photon-phonon interaction, where the atom-photon coupling depends on the mechanical displacement without practically changing a cavity frequency. This novel mechanism of optomechanical interactions, as predicted recently by Cotrufo et al. [Phys. Rev. Lett.118, 133603 (2017)10.1103/PhysRevLett.118.133603], is fundamentally different from standard ones. In the enhanced atom-phonon coupling, the strong phonon nonlinearity at a single-excitation level is obtained in the originally weak-coupling regime, which leads to the appearance of phonon blockade. Moreover, the optimal parameter regimes are presented both for the cases of one and two cavities. We compared phonon-number correlation functions of different orders for mechanical steady states generated in the one-cavity hybrid system, revealing the occurrence of phonon-induced tunneling and different types of phonon blockade. Our approach offers an alternative method to generate and control a single phonon in the quantum regime and could have potential applications in single-phonon quantum technologies.

Source: Optics Express

DOI: 10.1364/oe.450337

Authors: Mei Wang, Tai-Shuang Yin, Zhao-Yu Sun, Hong-Guang Cheng, Bi-Fu Zhan, Li-Li Zheng

Institutions: Wuhan Polytechnic University, Zhejiang Sci-Tech University, Jianghan University

Language: English

Topic: Mechanical and Optical Resonators

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: John Templeton Foundation, National Institute of Advanced Industrial Science and Technology, Hubei Provincial Department of Education, Asian Office of Aerospace Research and Development, National Natural Science Foundation of China, Russian Foundation for Basic Research, Multidisciplinary University Research Initiative, Japan Society for the Promotion of Science, RIKEN, Core Research for Evolutional Science and Technology, Air Force Office of Scientific Research, Army Research Office

OpenAlex ID: W2805407549