On-demand microwave single-photon source based on tantalum thin films
Abstract
Single-photon sources are crucial for quantum information technologies. Here, we demonstrate a microwave single-photon source based on tantalum thin films, whose favorable material properties enable high-quality, stable photon emission. The antibunching behavior of the emitted radiation is revealed by second-order correlation measurements. Furthermore, traveling-wave parametric amplifiers are used as low-noise pre-amplifiers in the detection chains, substantially improving the signal-to-noise ratio and thereby greatly reducing the acquisition time required for second-order correlation measurements. These results demonstrate the viability of tantalum-based superconducting devices as reliable platforms for microwave quantum photonics.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (8)
Ying Hu
Sheng-Yong Li
Department of Automation, Tsinghua University 2 , Beijing 100084,
En-Qi Chen
Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University 1 , Changsha 410081,
Rui-Yang Gong
School of Physics, Sun Yat-Sen University 3 , Guangzhou 510275,
Jing Zhang
Yu-xi Liu
School of Integrated Circuits, Tsinghua University 6 , Beijing 100084,
Jia-Gui Feng
Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong) 7 , Shenzhen 518045,
Zhihui Peng
Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University 1 , Changsha 410081,