Enhancing strength and range of atom-atom interaction in a coupled-cavity array via parametric drives
Year: 2023
Authors: Ren YL., Ma SL., Zippilli S., Vitali D., Li FL.
Autors Affiliation: Xi An Jiao Tong Univ, Sch Phys, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Xian 710049, Peoples R China; Xi An Jiao Tong Univ, Sch Phys, Shaanxi Prov Key Lab Quantum Informat & Quantum O, Xian 710049, Peoples R China; Univ Camerino, Sch Sci & Technol, Phys Div, I-62032 Camerino, Italy; Ist Nazl Fis Nucl, Sez Perugia, Via A Pascoli, I-06123 Perugia, Italy; CNR, Inst Nazl Ott, Lgo Enrico Fermi 6, I-50125 Florence, Italy.
Abstract: Coherent long-range interactions between atoms are a prerequisite for numerous applications in the field of quantum information science. Here we present an appealing method to dramatically enhance the long-range atom-atom interaction mediated by a coupled-cavity array that is subjected to two-photon (parametric) drives. Our method allows one to greatly amplify both the localization length of the single-photon bound-state wave function and the effective atom-photon coupling strength, resulting in a significant improvement of photon-mediated coherent interaction between two distant atoms. Additionally, we illustrate this effect by analyzing how it facilitates the transfer of information and the creation of entanglement between the atoms.
Journal/Review: PHYSICAL REVIEW A
Volume: 108 (3) Pages from: 33717-1 to: 33717-7
More Information: We acknowledge financial support from the National Natural Science Foundation of China (Grants No. 11704306 and No. 12074307) and financial support from NQSTI within PNRR MUR Project No. PE0000023-NQSTI.lKeyWords: Quantum; WaveDOI: 10.1103/PhysRevA.108.033717Connecting to view paper tab on IsiWeb: Click here