Ultrafast quantum control of atomic excited states via interferometric two-photon Rabi oscillations

• DOI: 10.1038/s42005-024-01585-x
• Publication Date: 2024-03-16T06:01:43Z
• Authors: Yudong Chen; Sainan Peng; Zongyuan Fu; Liyang Qiu; Guangyu Fan; Yi Liu; Saijun Wu; Xinhua Xie; Zhensheng Tao
• Keywords: Rabi cycle; Coherent control; Rabi frequency

Abstract Quantum-state manipulation through coherent interaction with a radiation field is fundamental process broad implications in quantum optics and information processing. However, current control methods are limited by their operation at Rabi frequencies below the gigahertz range, which restricts applicability to systems long coherence times. To overcome this limitation, alternative approaches utilizing ultrafast driving lasers have garnered great interest. In work, we demonstrate two-photon oscillations excited states of argon operating terahertz driven laser pulses. Leveraging quantum-path interferometry, able measure manipulate both amplitudes phases transition dipoles exploiting intensity polarization state laser. This precise enables femtosecond population transfer accumulation geometric phase. Our findings provide valuable insights into all-optical extreme-ultraviolet radiations possibility interferometric multiphoton transitions.