# Extracting work from quantum states of radiation

## TL;DR

This paper proposes a theoretical model where quantum radiation states are converted into mechanical work via an optomechanical chain, revealing how quantum uncertainties influence energy transfer and work extraction.

## Contribution

It introduces a novel theoretical framework connecting quantum radiation states to classical thermodynamics through an optomechanical chain, highlighting the role of quantum uncertainties in work extraction.

## Key findings

- Work transfer depends on radiation state uncertainty.
- Energy transfer is nonlinear and nonmonotonic.
- Work sign and amount are strongly influenced by quantum uncertainties.

## Abstract

Quantum optomechanics opens a possibility to mediate a physical connection of quantum optics and classical thermodynamics. We propose and theoretically analyze a one-way chain starting from various quantum states of radiation. In the chain, the radiation state is first ideally swapped to sufficiently large mechanical oscillator (membrane). Then the membrane mechanically pushes a classical almost mass-less piston, which is pressing a gas in a small container. As a result we observe strongly nonlinear and nonmonotonic transfer of the energy stored in classical and quantum uncertainty of radiation to mechanical work. The amount of work and even its sign depends strongly on the uncertainty of the radiation state. Our theoretical prediction would stimulate an experimental proposals for such optomechanical connection to thermodynamics.