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

• URL: http://arxiv.org/abs/2407.02784v1
• Date: Wed, 3 Jul 2024 03:22:38 GMT
• Title: Breeding the Cat Through Superposition of Two Schrodinger Kittens Based on Coupled Waveguides
• Authors: Nuo Wang, Xinchen Zhang, Qi Liu, Fengxiao Sun, Qiongyi He, Ying Gu,
• Abstract summary: Optical Schrodinger's cat (SC) is highly anticipated because of the potential of realizing fault-tolerant quantum computing. 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.
• Score: 6.457908814435069
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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.

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