Breeding the Cat Through Superposition of Two Schrodinger Kittens Based on Coupled Waveguides

Optical Schrodinger's cat (SC) is highly anticipated because of the potential of realizing fault-tolerant quantum computing, but the practical merit is only shown when the amplitude is larger than 2. However, such high-amplitude cats have not been prepared due to the limitations rooted in the e...

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Bibliographic Details
Published inarXiv.org
Main Authors Wang, Nuo, Zhang, Xinchen, Liu, Qi, Sun, Fengxiao, He, Qiongyi, Gu, Ying
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 03.07.2024
Subjects
Amplitudes
Fault tolerance
Quantum computing
Quantum mechanics
Schroedinger cat state
Waveguides
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Summary:Optical Schrodinger's cat (SC) is highly anticipated because of the potential of realizing fault-tolerant quantum computing, but the practical merit is only shown when the amplitude is larger than 2. However, such high-amplitude cats have not been prepared due to the limitations rooted in the existing method. Here, we demonstrate a principle that a large SC-like state can be generated by the superposition of two kittens in which two nearby coherent states interfere and grow to an enlarged coherent-like state. Further, we propose a scheme to breed the cat beyond the limitation in the former works with a high probability by realizing the superposition of two SCs in coupled waveguides. The principle and scheme demonstrated here provide a new perspective on understanding quantum superposition in phase space and a better solution for the efficient generation of SCs on chips.
ISSN:2331-8422