Year: 2025
Type: article
Abstract: Quantum systems are inherently susceptible to noise—a notorious factor that induces decoherence and limits the performance of quantum applications. To mitigate its detrimental effects, various techniques have been developed, including cryogenic cooling, bath engineering, and quantum error correction. In this Letter, we demonstrate that by exploiting noise correlations in coupled quantum systems, the overall impact of noise can be significantly suppressed. Specifically, in a piezo-optomechanical-based microwave-optical quantum transducer, correlations between the noise affecting the acoustic and electrical modes can lead to substantial noise reduction, thereby enhancing the performance of quantum transduction. This reduction is primarily governed by the phase of the piezomechanical coupling and is also influenced by system parameters such as the coupling ratio and mode cooperativity. Since these parameters simultaneously affect the signal transmissivity, they must be optimized to achieve the transducer’s optimal performance. Our work provides a systematic framework for this optimization, offering a guidance for practical designs.
Source: Physical Review Research
DOI: 10.1103/zq39-wzdb
Authors: Yu-Bo Hou, Xiaoan Ai, Ruizhe You, Changchun Zhong
Institution: Xi'an Jiaotong University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
Funder: Xi’an Jiaotong University
Award: G1299069089
OpenAlex ID: W4413414646