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arXiv · 2405.07350

Experimental demonstration of a versatile and scalable scheme for iterative generation of non-Gaussian states of light

Hector Simon·Lucas Caron·Romaric Journet·Viviane Cotte·Rosa Tualle-Brouri
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Abstract

Non-Gaussian states of light, such as GKP states, are essential resources for optical continuous-variable quantum computing. The ability to efficiently produce these states would open up tremendous prospects for quantum technologies in general and fault-tolerant quantum computing in particular. This letter demonstrates a versatile method using a quantum memory cavity to overcome the probabilistic nature of the breeding protocols and generate non-Gaussian states at high rates with scalability perspectives. The performances of our experimental setup are illustrated with the generation of Schr\"odinger cat states of amplitude alpha = 1.63 with a fidelity of more than 60% at a generation rate in the kHz range, which is higher than the state of the art for such states.

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Hector Simon, Lucas Caron, Romaric Journet, Viviane Cotte, Rosa Tualle-Brouri. 2024-05-12. Experimental demonstration of a versatile and scalable scheme for iterative generation of non-Gaussian states of light. https://doi.org/10.1103/physrevlett.133.173603

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