Switchable coupling for superconducting qubits using double resonance in the presence of crosstalk

Abstract

Several methods have been proposed recently to achieve switchable coupling between superconducting qubits. We discuss some of the main considerations regarding the feasibility of implementing one of those proposals: the double-resonance method. We analyze mainly issues related to the achievable effective coupling strength and the effects of crosstalk on this coupling approach. We also find a new, crosstalk-assisted coupling channel that can be an attractive alternative when implementing the double-resonance coupling proposal.

4 pages, 3 figures

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Cited by in corpus (20)

• Microwave photonics with superconducting quantum circuits
• Speed limits for quantum gates in multi-qubit systems
• High-fidelity CZ gate for resonator-based superconducting quantum computers
• Entanglement of superconducting qubits via microwave fields: classical and quantum regimes
• Interqubit coupling mediated by a high-excitation-energy quantum object
• Protecting entanglement in superconducting qubits
• High Coherence Plane Breaking Packaging for Superconducting Qubits
• Efficient purification protocols using iSWAP gates in solid-state qubits
• Optimal control for fast and high-fidelity quantum gates in coupled superconducting flux qubits
• Spectroscopy of superconducting charge qubits coupled by a Josephson inductance
• Selective darkening of degenerate transitions for implementing quantum controlled-NOT gates
• Relaxation, decoherence and steady-state population inversion in qubits doubly dressed by microwave and radiofrequency fields
• Two-qubit gate operations in superconducting circuits with strong coupling and weak anharmonicity
• Extensible 3D architecture for superconducting quantum computing
• Realisation of adiabatic and diabatic CZ gates in superconducting qubits coupled with a tunable coupler
• Non-Markovian entanglement dynamics in coupled superconducting qubit systems
• Simulating systems of itinerant spin-carrying particles using arrays of superconducting qubits and resonators
• Generation of photons from vacuum in cavity via time-modulation of a qubit invisible to the field
• Dynamical decoupling of superconducting qubits
• Low Overhead Quantum Bus with Coupling beyond the Nearest Neighbor via Mediated Effective Capacitance