GHz photon-number resolving detection with high detection efficiency and low noise by ultra-narrowband interference circuitsOACSTPCDEI
We demonstrate the photon-number resolution(PNR)capability of a 1.25 GHz gated InGaAs single-photon avalanche photodiode(APD)that is equipped with a simple,low-distortion ultra-narrowband interference circuit for the rejection of its background capacitive response.Through discriminating the avalanche current amplitude,we are able to resolve up to four detected photons in a single detection gate with a detection efficiency as high as 45%.The PNR capability is limited by the avalanche current saturation,and can be increased to five photons at a lower detection efficiency of 34%.The PNR capability,combined with high efficiency and low noise,will find applications in quantum information processing technique based on photonic qubits.
Tingting Shi;Yuanbin Fan;Zhengyu Yan;Lai Zhou;Yang Ji;Zhiliang Yuan;
Beijing Academy of Quantum Information Sciences,Beijing 100193,China Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,ChinaBeijing Academy of Quantum Information Sciences,Beijing 100193,ChinaInstitute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China
电子信息工程
single photon avalanche diode(APD)photon number resolution(PNR)detection efficiency
《Journal of Semiconductors》 2024 (003)
P.71-75 / 5
supported by the National Natural Science Foundation of China(62250710162 and 12274406);the National Key Research and Development Program of China(2022YFA1405100).
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