Multiple transparency windows and Fano interferences induced by dipole-dipole couplings

Autor(es)

Diniz, E. C. ; Borges, H. S. ; Villas-Boas, C. J.

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW A; v. 97, n. 4, p. 11-pg., 2018-04-19.

Resumo

We investigate the optical properties of a two-level system (TLS) coupled to a one-dimensional array of N other TLSs with dipole-dipole coupling between the first neighbors. The first TLS is probed by a weak field, and we assume that it has a decay rate much greater than the decay rates of the other TLSs. For N = 1 and in the limit of a Rabi frequency of a probe field much smaller than the dipole-dipole coupling, the optical response of the first TLS, i.e., its absorption and dispersion, is equivalent to that of a three-level atomic system in the configuration which allows one to observe the electromagnetically induced transparency (EIT) phenomenon. Thus, here we investigate an induced transparency phenomenon where the dipole-dipole coupling plays the same role as the control field in EIT in three-level atoms. We describe this physical phenomenon, named a dipole-induced transparency (DIT), and investigate how it scales with the number of coupled TLSs. In particular, we have shown that the number of TLSs coupled to the main TLS is exactly equal to the number of transparency windows. The ideas presented here are very general and can be implemented in different physical systems, such as an array of superconducting qubits, or an array of quantum dots, spin chains, optical lattices, etc. (AU)

• Processo FAPESP: 13/04162-5 - Desenvolvimento de sensores quânticos com átomos ultrafrios
• Beneficiário: Philippe Wilhelm Courteille
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 14/12740-1 - Memória quântica e eletrodinâmica de cavidades em pontos quânticos acoplados por tunelamento
• Beneficiário: Halyne Silva Borges
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado