Chalmers Develops Noise-Powered Quantum Refrigerator

Researchers at Chalmers University of Technology have developed a novel quantum refrigerator that paradoxically uses noise as a driving force for cooling, rather than attempting to eliminate it. This innovation addresses a critical challenge in quantum computing, where delicate quantum states require extremely low temperatures but are often disrupted by noise from conventional cooling systems. The device, based on a superconducting artificial molecule, can precisely control heat and energy flows at an attowatt scale, operating as a refrigerator, heat engine, or thermal transport amplifier. This advancement is crucial for scaling up quantum computers, making them more reliable and robust for real-world applications in fields like drug discovery, artificial intelligence, and secure communications. The study was published in Nature Communications and received funding from several organizations including the Sweden===Swedish Research Council and the European Union.