Probing coherent quantum thermodynamics using a trapped ion

Area of Science:

• Quantum thermodynamics
• Quantum information science
• Experimental physics

Background:

• Quantum thermodynamics seeks to understand thermodynamic laws in quantum systems, where coherence and entanglement are crucial.
• Developing quantum thermal machines demonstrating the pivotal role of quantum effects has been challenging.
• Classical work fluctuation-dissipation relations lack quantum corrections relevant to deep quantum regimes.

Purpose of the Study:

• To experimentally measure and benchmark a genuine quantum correction to the classical work fluctuation-dissipation relation.
• To investigate the impact of quantum friction on thermodynamic properties in a quantum system.
• To demonstrate the utility of stochastic quantum thermodynamics for identifying quantum signatures.

Main Methods:

• Utilized a trapped ion system for experimental control and measurement.
• Employed laser-induced coherent Hamiltonian rotations to manipulate the quantum state.
• Performed precise energy measurements to quantify thermodynamic work fluctuations.

Main Results:

• Successfully measured and benchmarked a quantum correction induced by quantum friction.
• Demonstrated that quantum friction modifies the classical work fluctuation-dissipation relation.
• Validated the capability of stochastic quantum thermodynamics to distinguish quantum signatures.

Conclusions:

• Quantum friction introduces a measurable correction to classical thermodynamic relations in the quantum regime.
• Experimental techniques can unambiguously identify genuine quantum coherent signatures, even with SPAM errors.
• The findings extend beyond established theoretical predictions, opening new avenues for quantum thermodynamics research.