Quantum feedback control for qubit-qutrit entanglement

Tiantian Ma, Jun Jing, Yi Guo, Ting Yu

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We study a hybrid quantum open system consisting of two interacting subsystems formed by one two-level atom (qubit) and one three-level atom (qutrit). The quantum open system is coupled to an external environment (cavity) via the qubit-cavity interaction. It is found that the feedback control on different parts of the system (qubit or qutrit) gives dramatically different asymptotical behaviors of the open system dynamics. We show that the local feedback control mechanism acting on the qutrit subsystem is superior than that on the qubit in the sense of improving the entanglement. Particularly, the qutrit-control scheme may result in an entangled steady state, depending on the initial state.

Original languageEnglish
Pages (from-to)597-614
Number of pages18
JournalQuantum Information and Computation
Volume16
Issue number7-8
StatePublished - 1 May 2016

Keywords

  • Entanglement
  • Quantum feedback control

Fingerprint

Dive into the research topics of 'Quantum feedback control for qubit-qutrit entanglement'. Together they form a unique fingerprint.

Cite this