Robust implicit quantum control of interacting spin chains

TL;DR

This paper presents a noise-resilient quantum control method for interacting spin chains that avoids explicit state reference, enabling robust preparation of entangled states in larger systems.

Contribution

It introduces a novel quantum control approach that bypasses the exponential complexity of Hilbert space, improving noise resilience in spin chain systems.

Findings

Control protocols successfully prepare entangled states with noise resilience

Method scales better than traditional state-dependent control techniques

Demonstrates robustness in larger spin chain systems

Abstract

Robust quantum control can achieve noise-resilience of quantum systems and quantum technological devices. While the need for noise-resilience grows with the number of fluctuating quantities, and thus typically with the number of qubits, most numerically exact optimal control techniques are limited to systems of few interacting qubits. This paper exploits quantum control that avoids explicit reference to quantum states in exponentially large Hilbert space. Exemplary control protocols for spin chains are discussed in terms of noise-resilient preparation of highly entangled states.