A High-Temperature Single-Photon Source from Nanowire Quantum Dots

作者：Tribu Adrien; Sallen Gregory; Aichele Thomas^*; Andre Regis; Poizat Jean Philippe; Bougerol Catherine; Tatarenko Serge; Kheng Kuntheak

来源：Nano Letters, 2008, 8(12): 4326-4329.

DOI：10.1021/nl802160z

We present a high-temperature single-photon source based on a quantum dot inside a nanowire. The nanowires were grown by molecular beam epitaxy in the vapor-liquid-solid growth mode. We utilize a two-step process that allows a thin, defect-free ZnSe nanowire to grow on top of a broader, cone-shaped nanowire. Quantum dots are formed by incorporating a narrow zone of CdSe into the nanowire. We observe intense and highly polarized photoluminescence even from a single emitter. Efficient photon antibunching is observed up to 220 K, while conserving a normalized antibunching dip of at most 36%. This is the highest reported temperature for single-photon emission from a nonblinking quantum-dot source and principally allows compact and cheap operation by using Peltier cooling.

• 出版日期2008-12
• 单位中国地震局