High-fidelity dissipative engineering using parametric interactions

TL;DR

This paper introduces a novel dissipative engineering protocol using parametric interactions that enables high-fidelity, rapid entanglement of two qubits without resonance constraints, suitable for superconducting qubits.

Contribution

The authors present a new method for dissipative state preparation that overcomes resonance limitations, allowing flexible and high-fidelity entanglement generation.

Findings

Achieves high-fidelity entanglement with short convergence time

Allows continuous control of the stabilized target state

Compatible with current superconducting qubit technology

Abstract

Established methods for dissipative state preparation typically rely on resolving resonances, limiting the target state fidelity due to competition between the stabilization mechanism and uncontrolled dissipation. We propose a protocol devoid of such constraints, using parametric couplings to engineer dissipation for preparation of any maximally entangled two-qubit state. Our scheme allows high-fidelity entanglement generation with short convergence time, continuous control of the target state in the stabilized manifold, and is realizable with state-of-the-art superconducting qubit technology.