In a quantum chip, the phonon resonator coupled with superconducting bits is a key component for connecting and converting photoelectric signals and performing quantum logic operations. This kind of coherent phonon device has wide application value in many fields such as quantum information, nanomechanics and thermoelectric materials, supersensitive sensing, nondestructive testing and geological exploration. However, the manufacturing of this key component, there is a technical “trouble”, that is, the signal quality and computational accuracy is vulnerable to environmental noise interference or even damage. Jing hui, a professor at the college of physics and electronic science of hunan normal university, proposed a one-way quantum phonon laser technology, which can not only realize the directional amplification of signal with high fidelity, but also significantly inhibit the interference or damage of inverse noise to the function of chip. This technique does not rely on material nonlinearity, and can be easily extended to integrated array circuit, which fills the gap of unidirectional phonon laser research in the world, and provides a general method for practical applications such as quantum computing, unidirectional communication, stealth detection and heat flow control. The results were published online Dec. 15 in physical review applications, a journal of the American physical society.
In this work, jing hui proposed that the one-way amplification and transmission of sound waves can be realized by using the relativistic optical effect of rotating cavity. Firstly, phonon coherent amplification is realized by using optical radiation pressure (opr). Then the relativistic sagnagel effect is used, that is, the frequency and radiation pressure of the light along or against the rotation direction of the cavity will be different, so that the phonon coherence generated in one direction will be amplified, while the phonon excitation in the opposite direction will be completely forbidden. Finally, a new technique of unidirectional phonon coherent amplification, which can not only amplify the signal with high fidelity, but also suppress the interference of reverse noise to the function of the chip, is realized. The work was deemed “particularly interesting, important and clear” by the journal’s editors, who placed it at the top of the home page.