Optical simulation of a quantum cooling engine powered by entangled measurements

Autor(en)

Ning Ning Wang, Huan Cao, Chao Zhang, Xiao Ye Xu, Bi Heng Liu, Yun Feng Huang, Chuan Feng Li, Guang Can Guo

Abstrakt

Traditional refrigeration is driven either by external forces or by the information-feedback mechanism. Surprisingly, quantum measurement and collapse, typically viewed as detrimental, can also power a quantum cooling engine without requiring any feedback mechanism. In this work, we perform a proof-of-principle demonstration of quantum measurement cooling (QMC) powered by entangled measurements using a highly controllable linear optical simulator. The simulator can simulate qubits with different energy-level spacings and their thermalizing processes at different temperatures, and also allows for arbitrary projections of two qubits at different energy levels. We show the effect of changes in energy levels and measurement bases on the cooling process and demonstrate the robustness of QMC. These results reveal the special role of entangled measurements in quantum thermodynamics, indicate that quantum measurement is not always detrimental but can be a valuable thermodynamic resource. Our setup also offers a highly controllable simulation platform for multiqubit quantum engines.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

University of Science and Technology of China (USTC)

Journal

Optica

Band

11

Seiten

988-994

Anzahl der Seiten

7

ISSN

2334-2536

DOI

https://doi.org/10.1364/OPTICA.521222

Publikationsdatum

07-2024

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103026 Quantenoptik

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/2accd857-7847-4238-ad85-20db9226fc71