Title:
OPTICAL PULSE DESIGN METHOD FOR PERFORMING HIGH FIDELITY CONTROL ON ENSEMBLE QUANTUM BIT
Document Type and Number:
WIPO Patent Application WO/2022/095310
Kind Code:
A1
Abstract:
Disclosed in the present invention is an optical pulse design method for performing high fidelity control on an ensemble quantum bit. A reverse engineering method based on a Lewis-Riesenfeld invariant is used, and a perturbation theory and the concept of system error sensitivity are utilized, so as to construct a quick and efficient double-color optical pulse simultaneously having high robustness for frequency detuning and laser intensity fluctuation; the pulse can be applied to a three-level system having non-uniform broadening, and an arbitrary superposition state of the ensemble quantum bit is created with high fidelity. In the pulse action process, quantum control has high robustness for instantaneous change or spatial non-uniform distribution of laser intensity, and the robustness can improve the signal-to-noise ratio of a detection signal and reduce the experiment difficulty; meanwhile, the time for the quantum bit to be in an excited state is remarkably shortened, such that the decoherence effect of the quantum bit can be greatly reduced to ensure that high-fidelity control is achieved.
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Inventors:
YAN YING (CN)
MO ZE (CN)
CHEN TIANFENG (CN)
WAN LIN (CN)
WANG JIAYI (CN)
MO ZE (CN)
CHEN TIANFENG (CN)
WAN LIN (CN)
WANG JIAYI (CN)
Application Number:
PCT/CN2021/077813
Publication Date:
May 12, 2022
Filing Date:
February 25, 2021
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
G06N10/00
Foreign References:
| CN112232514A | 2021-01-15 | |||
| CN108415206A | 2018-08-17 | |||
| CN109782508A | 2019-05-21 | |||
| CN101477288A | 2009-07-08 | |||
| US6678450B1 | 2004-01-13 |
Attorney, Agent or Firm:
SUZHOU ZHIPIN PARTNERS (CN)
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