Microwave-induced coupling of superconducting qubits

Abstract

We investigate the quantum dynamics of a system of two coupled superconducting qubits under microwave irradiation. We find that, with the qubits operated at the charge co-degeneracy point, the quantum evolution of the system can be described by a new effective Hamiltonian which has the form of two coupled qubits with tunable coupling between them. This Hamiltonian can be used for experimental tests on macroscopic entanglement and for implementing quantum gates.

6 pages, 3 figures

References in corpus (1)

• Parametric coupling for superconducting qubits

Cited by in corpus (10)

• Entanglement of superconducting qubits via microwave fields: classical and quantum regimes
• Interqubit coupling mediated by a high-excitation-energy quantum object
• Coupling superconducting flux qubits at optimal point via dynamic decoupling with the quantum bus
• Protecting entanglement in superconducting qubits
• Spectroscopy of superconducting charge qubits coupled by a Josephson inductance
• Switchable coupling for superconducting qubits using double resonance in the presence of crosstalk
• Switchable coupling between charge and flux qubits
• Enhancement of sudden death of entanglement for driven qubits
• Measurement-induced entanglement of two superconducting qubits
• Method for finding the critical temperature of the island in a SET structure