Deterministic and Robust Generation of Single Photons from a Single Quantum Dot with 99.5% Indistinguishability Using Adiabatic Rapid Passage

作者：Wei Yu Jia; He Yu Ming; Chen Ming Cheng; Hu Yi Nan; He Yu; Wu Dian; Schneider Christian; Kamp Martin; Hoefling Sven; Lu Chao Yang^*; Pan Jian Wei

来源：Nano Letters, 2014, 14(11): 6515-6519.

DOI：10.1021/nl503081n

• quantum dots
• quantum computation
• single photons
• resonance fluorescence
• adiabatic rapid passage
• two-photon interference

Single photons are attractive candidates of quantum bits (qubits) for quantum computation and are the best messengers in quantum networks. Future scalable, fault-tolerant photonic quantum technologies demand both stringently high levels of photon indistinguishability and generation efficiency. Here, we demonstrate deterministic and robust generation of pulsed resonance fluorescence single photons from a single semiconductor quantum dot using adiabatic rapid passage, a method robust against fluctuation of driving pulse area and dipole moments of solid-state emitters. The emitted photons are background-free, have a vanishing two-photon emission probability of 0.3% and a raw (corrected) two-photon Hong-Ou-Mandel interference visibility of 97.9% (99.5%), reaching a precision that places single photons at the threshold for fault-tolerant surface-code quantum computing. This single-photon source can be readily scaled up to multiphoton entanglement and used for quantum metrology, boson sampling, and linear optical quantum computing.

• 出版日期2014-11
• 单位中国科学技术大学