2025/11/25 by Huang, Yuexun, Smith, Delaney, Zeng, Pei +4
#FOS: Physical sciences #Optics (physics.optics) #Quantum Physics (quant-ph)
paper · doi:10.48550/arxiv.2511.20031
The proposed vacuum beam guide (VBG) represents an innovation in the field of quantum channel technology, guaranteeing an ultra-low level of attenuation and a broad transmission linewidth, which offers an unprecedented quantum capacity exceeding Tera-qubits per second on a continental scale. However, its stability in terms of interferometry remains unexamined. To address this gap, we have developed a comprehensive error model that captures the intrinsic phase noise power spectral density associated with VBG, thereby revealing the advantages of VBG for interferometry over existing techniques. This model facilitates a comprehensive characterization of VBG as a photonic quantum channel, thereby facilitating a detailed investigation of its potential. Our theoretical analysis demonstrates the feasibility of VBG and its expected performance in a wide range of quantum applications.