Abstract We report on the experimental quantification of the contribution to non-equilibrium entropy production stemming from the quantum coherence content in the initial state of a qubit exposed to both coherent driving and dissipation. Our experimental demonstration builds on the exquisite experimental control of the spin state of a nitrogen-vacancy defect in diamond and is underpin... https://www.duospiritalis.com/limited-deal-Radio-Birdman-Rock-Roll-Soldiers-T-Shirt-super-grab/