Work Extraction from Classically Correlated States in Noisy Quantum Channels with Memory

TL;DR

This paper explores how non-unital noise and memory effects in quantum channels can be harnessed to enhance work extraction from classically correlated states, revealing noise as a potential resource.

Contribution

It demonstrates that amplitude damping channels with memory can generate quantum correlations that increase work extraction, challenging the view of noise as purely detrimental.

Findings

Channel memory amplifies daemonic ergotropy gains.

Non-unital noise can serve as a thermodynamic resource.

Quantum correlations induced by noise enable additional work extraction.

Abstract

This study investigates the potential of local non-unital noise and quantum channel memory to enhance work extraction from classically correlated quantum states. Utilizing the framework of daemonic ergotropy, which incorporates measurement-based feedback via an ancillary system, we show that amplitude damping channels can induce quantum correlations that enable additional extractable work. Through analytical derivations and numerical simulations, we quantify the daemonic gain and demonstrate that channel memory significantly amplifies this advantage by preserving system-ancilla correlations. Our results reveal that non-unital noise can serve not as a limitation but as a valuable thermodynamic resource in quantum protocols.