Thermodynamics of quantum information in noisy polarizers

TL;DR

This paper develops a quantum thermodynamic framework for noisy optical polarizers, establishing minimal heat dissipation limits during polarization, with implications for quantum communication devices.

Contribution

It provides the first comprehensive quantum thermodynamic analysis of noisy polarizers, deriving Landauer's principle variants and quantifying heat dissipation in optical polarization processes.

Findings

Derived Landauer's principle for noisy polarizers.

Quantified minimal heat dissipation during polarization creation.

Illustrated results with temperature-dependent quantum eraser example.

Abstract

Among the emerging technologies with prophesied quantum advantage, quantum communications has already led to fascinating demonstrations -- including quantum teleportation to and from satellites. However, all optical communication necessitates the use of optical devices, and their comprehensive quantum thermodynamic description is still severely lacking. In the present analysis we prove several versions of Landauer's principle for noisy polarizers, namely absorbing linear polarizers and polarizing beamsplitters. As main results we obtain statements of the second law quantifying the minimal amount of heat that is dissipated in the creating of linearly polarized light. Our findings are illustrated with an experimentally tractable example, namely the temperature dependence of a quantum eraser.