Robust population inversion in three-level systems by composite pulses
- URL: http://arxiv.org/abs/2105.14910v2
- Date: Fri, 8 Apr 2022 14:37:23 GMT
- Title: Robust population inversion in three-level systems by composite pulses
- Authors: Cheng Zhang, Yang Liu, Zhi-Cheng Shi, Jie Song, Yan Xia, and Shi-Biao
Zheng
- Abstract summary: We exploit the idea of composite pulses to achieve robust population inversion in a three-level quantum system.
The composite pulses sequence is designed by vanishing high-order error terms, and can compensate the systematic errors to any desired order.
As an example, we employ the designed composite pulse sequence to prepare the W state in a robust manner in the superconducting circuits.
- Score: 16.041631902819304
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: In this work, we exploit the idea of composite pulses to achieve robust
population inversion in a three-level quantum system. The scheme is based on
the modulation of the coupling strength, while the other physical parameters
remain unchanged. The composite pulses sequence is designed by vanishing
high-order error terms, and can compensate the systematic errors to any desired
order. In particular, this scheme keeps a good performance under the
disturbance of waveform deformations. This trait ensures that population
inversion can be nearly obtained even when the pulse sequence has a short jump
delay. As an example, we employ the designed composite pulse sequence to
prepare the W state in a robust manner in the superconducting circuits. The
numerical results show that the fidelity can still maintain a high level in a
decoherence environment.
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