Observation of an excitonic quantum coherence in CdSe nanocrystals

• Main Authors: Prezhdo, Oleg V., Loh, Zhi-Heng, Chan, Yinthai, Dong, Shuo, Trivedi, Dhara, Chakrabortty, Sabyasachi, Kobayashi, Takayoshi
• Other Authors: School of Physical and Mathematical Sciences
• Format: Conference or Workshop Item
• Language: English
• Published: 2018
• Subjects: Spectroscopy; DRNTU::Science::Physics; Ultrafast Phenomena
• Online Access: https://hdl.handle.net/10356/102569; http://hdl.handle.net/10220/47258
• Institution: Nanyang Technological University

Optical pump-probe spectroscopy with 6-fs pulses elucidates the 1Se1S3/2–1Se2S3/2 excitonic quantum coherence in CdSe nanocrystals. This coherence encodes hole migration over nanometer length scales and markedly alters the displacement amplitudes of coherent phonons.