Generating stationary entangled states in superconducting qubits
Jing Zhang, Yu-xi Liu, Chun-Wen Li, Tzyh-Jong Tarn, Franco Nori
DOI 10.1103/PhysRevA.79.052308 · Physical Review A
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
When a two-qubit system is initially maximally entangled, two independent decoherence channels, one per qubit, would greatly reduce the entanglement of the two-qubit system when it reaches its stationary state. We propose a method on how to minimize such a loss of entanglement in open quantum systems. We find that the quantum entanglement of general two-qubit systems with controllable parameters can be controlled by tuning both the single-qubit parameters and the two-qubit coupling strengths. Indeed, the maximum fidelity Fmax between the stationary entangled state, ρ∞, and the maximally entangled state, ρm, can be about 2/3≈max{tr(ρ∞ρm)}=Fmax, corresponding to a maximum stationary concurrence, Cmax, of about 1/3≈C(ρ∞)=Cmax. This is significant because the quantum entanglement of the two-qubit system can be produced and kept, even for a long time. We apply our proposal to several types of two-qubit superconducting circuits and show how the entanglement of these two-qubit circuits can be optimized by varying experimentally controllable parameters.
Similar papers
Hardware-efficient stabilization of entanglement via engineered dissipation in superconducting circuits
similarity 0.92Changling Chen et al.
Source status unknown — claims are unverified
Steady-state entanglement of two superconducting qubits engineered by dissipation
similarity 0.92Florentin Reiter et al.
Source status unknown — claims are unverified
Stationary entanglement in strongly coupled qubits
similarity 0.91K. Xia et al. · 2011 · arXiv:1107.1587
Source status unknown — claims are unverified
Entanglement of superconducting qubits via microwave fields: Classical and quantum regimes
similarity 0.90Jian Li et al.
Source status unknown — claims are unverified
Stabilizing Entanglement via Symmetry-Selective Bath Engineering in Superconducting Qubits
similarity 0.90M. E. Kimchi-Schwartz et al.
Source status unknown — claims are unverified
Generation of perfectly entangled two and three qubits states by classical random interaction
similarity 0.88Javed Akram · 2022 · arXiv:2212.03115
Source status unknown — claims are unverified