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Related Experiment Video

Updated: Jan 30, 2026

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Published on: August 17, 2017

Quantum absorption refrigerator with trapped ions.

Gleb Maslennikov¹, Shiqian Ding^1,2, Roland Hablützel¹

¹Centre for Quantum Technologies, National University of Singapore, 3 Science Dr 2, Singapore, 117543, Singapore.

Nature Communications

|January 16, 2019

Summary

This summary is machine-generated.

Researchers experimentally created a quantum absorption refrigerator using trapped ions. This device utilizes quantum effects to achieve cooling below classical thermodynamic limits, even in the single-shot regime.

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Area of Science:

Quantum Thermodynamics
Quantum Information Science
Experimental Quantum Physics

Background:

Thermodynamics is being extended to single quantum systems.
Quantum effects can enhance the performance of heat engines.
Implementing quantum effects in heat machines remains challenging.

Purpose of the Study:

To experimentally realize a quantum absorption refrigerator.
To investigate the dynamics and steady-state properties of this quantum refrigerator.
To compare cooling performance using thermal states versus quantum squeezing and assess single-shot performance.

Main Methods:

Utilized a system of three trapped ions.
Coupled three normal modes of motion via a trilinear Hamiltonian.
Investigated dynamics, steady-state properties, and cooling capabilities under different quantum resource conditions (thermal states, squeezing, single-shot regime).

Main Results:

Demonstrated a functional quantum absorption refrigerator using trapped ions.
Showcased cooling below steady-state energy levels.
Achieved cooling below a benchmark set by classical thermodynamics.
Highlighted the potential of quantum resources like squeezing and coherence for enhanced refrigeration.

Conclusions:

Experimental realization of a quantum absorption refrigerator is feasible.
Quantum resources significantly enhance refrigerator performance.
Quantum refrigerators can outperform classical thermodynamic limits, particularly in the single-shot regime.