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arXiv · 2310.03990

Generating scalable graph states in an atom-nanophotonic interface

C. -H. Chien·S. Goswami·C. -C. Wu·W. -S. Hiew·Y. -C. Chen·H. H. Jen
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Abstract

Scalable graph states are essential for measurement-based quantum computation and many entanglement-assisted applications in quantum technologies. Generation of these multipartite entangled states requires a controllable and efficient quantum device with delicate design of generation protocol. Here we propose to prepare high-fidelity and scalable graph states in one and two dimensions, which can be tailored in an atom-nanophotonic cavity via state carving technique. We propose a systematic protocol to carve out unwanted state components, which facilitates scalable graph states generations via adiabatic transport of a definite number of atoms in optical tweezers. An analysis of state fidelity is also presented, and the state preparation probability can be optimized via multiqubit state carvings and sequential single-photon probes. Our results showcase the capability of an atom-nanophotonic interface for creating graph states and pave the way toward novel problem-specific applications using scalable high-dimensional graph states with stationary qubits.

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C. -H. Chien, S. Goswami, C. -C. Wu, W. -S. Hiew, Y. -C. Chen, H. H. Jen. 2023-10-06. Generating scalable graph states in an atom-nanophotonic interface. https://doi.org/10.1088/2058-9565%2Fad33ad

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