Noninvasive and nonadiabatic quantum Maxwell demon

TL;DR

This paper proposes a quantum Maxwell demon using a quantum dot and undetailed charge detector, enabling power generation and cooling without continuous measurement-induced decoherence, and explores its performance and backaction.

Contribution

It introduces a noninvasive, nonadiabatic quantum Maxwell demon leveraging Landau-Zener-Stückelberg-Majorana driving for efficient feedback without work investment.

Findings

Achieves local violation of the second law with power and cooling.

Identifies optimal performance in the nonadiabatic regime.

Analyzes response current fluctuations and demon backaction.

Abstract

A quantum mechanical Maxwell demon is proposed in a quantum dot setting. The demon avoids continuous-measurement induced decoherence by exploiting an undetailed charge detector. The control of coherent tunneling via Landau-Zener-St\"uckelberg-Majorana driving allows for efficient feedback operations with no work invested. The local violation of the second law achieves simultaneous power generation and cooling. We discuss the response current fluctuations, and the demon backaction deriving from failures, finding optimal performance in the nonadiabatic regime.