Non-Markovian qubit dynamics in a circuit-QED setup

Autor(es)

Cardenas, P. C. ^[1] ; Paternostro, M. ^[2] ; Semiao, F. L. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Sao Paulo - Brazil

^[2] Queens Univ Belfast, Sch Math & Phys, Ctr Theoret Atom Mol & Opt Phys, Belfast BT7 1NN, Antrim - North Ireland

• Tipo de documento: Artigo Científico
• Fonte: Physical Review A; v. 91, n. 2 FEB 26 2015.
• Citações Web of Science: 9

Resumo

We consider a circuit-QED setup that allows the induction and control of non-Markovian dynamics of a qubit. Non-Markovianity is enforced over the qubit by means of its direct coupling to a bosonic mode which is controllably coupled to another qubit-mode system. We show that this configuration can be achieved in a circuit-QED setup consisting of two initially independent superconducting circuits, each formed by one charge qubit and one transmission-line resonator, which are put in interaction by coupling the resonators to a current-biased Josephson junction. We solve this problem exactly and then proceed with a thorough investigation of the emergent non-Markovianity in the dynamics of the qubits. Our study might serve the context for the first experimental assessment of non-Markovianity in a multielement solid-state device. (AU)

• Processo FAPESP: 12/12702-7 - Dinâmica e Não-Markovianidade de Qubits em Circuitos Supercondutores com Linhas de Transmissão Acopladas
• Beneficiário: Paulo Cesar Cardenas Montoya
• Modalidade de apoio: Bolsas no Brasil - Doutorado