Exponentially faster preparation of quantum dimers via driven-dissipative stabilization

TL;DR

This paper introduces a new driven-dissipative method that exponentially accelerates the creation of entangled quantum dimers across many qubits, offering a scalable, high-fidelity, and noise-resistant approach for quantum information applications.

Contribution

The authors develop a novel protocol that achieves exponential speedup in preparing quantum dimers using local control, independent of system size, surpassing existing dissipative stabilization methods.

Findings

Achieves exponential speedup over traditional schemes

Requires only local 2-qubit control Hamiltonians

Protocol time is independent of system size

Abstract

We propose a novel rapid, high-fidelity, and noise-resistant scheme to generate many-body entanglement between multiple qubits stabilized by dissipation into a 1D bath. Using a carefully designed time-dependent drive, our scheme achieves a provably exponential speedup over state-of-the-art dissipative stabilization schemes in 1D baths, which require a timescale that diverges as the target fidelity approaches unity and scales exponentially with the number of qubits. To prepare quantum dimer pairs, our scheme only requires local 2-qubit control Hamiltonians, with a protocol time that is independent of system size. This provides a scalable and robust protocol for generating a large number of entangled dimer pairs on-demand, serving as a fundamental resource for many quantum metrology and quantum information processing tasks.