Clock frequency estimation under spontaneous emission
Qin (秦锡洲)Xi-Zhou , Huang (黄嘉豪)Jia-Hao , Zhong (钟宏华)Hong-Hua , Lee (李朝红)Chaohong
Front. Phys. ›› 2018, Vol. 13 ›› Issue (1) : 130302
Clock frequency estimation under spontaneous emission
We investigate the quantum dynamics of a driven two-level system under spontaneous emission and its application in clock frequency estimation. By using the Lindblad equation to describe the system, we analytically obtain its exact solutions, which show three different regimes: Rabi oscillation, damped oscillation, and overdamped decay. From the analytical solutions, we explore how the spontaneous emission affects the clock frequency estimation. We find that under a moderate spontaneous emission rate, the transition frequency can still be inferred from the Rabi oscillation. Our results enable potential practical applications in frequency measurement and quantum control under decoherence.
clock frequency estimation / two-level system / spontaneous emission
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Higher Education Press and Springer-Verlag Berlin Heidelberg
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