Aiming for high-speed, high-capacity interconnection of neutral-atom quantum computers.

Mitsubishi Electric Corporation and Nanofiber Quantum Technologies Inc. have announced the immediate launch of a joint demonstration project. This initiative aims to establish interconnection technologies for neutral-atom quantum computers. The collaboration focuses on developing advanced solutions that will enable efficient and scalable communication between quantum processors, a key step in advancing quantum computing. Through this demonstration, the companies intend to overcome challenges related to quantum interconnects and further the development of practical, large-scale quantum computing systems.

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Neutral-atom quantum computers offer significant advantages in scalability due to their capacity for high integration and through the use of optical tweezers for flexible control of atom arrangement. However, the number of quantum bits (qubits) that can be controlled in a single system is physically limited by constraints such as the space available for atom arrangement. To realize large-scale quantum computing on a practical basis, new technology is needed to interconnect multiple quantum computers and thereby effectively expand the number of qubits.

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In this joint demonstration, a photonic quantum interface will be developed by leveraging Mitsubishi Electric’s advanced qubit control technologies and NanoQT’s technology, which combines Yb atoms and nanofiber cavities, aiming to demonstrate technology for high-efficiency interconnection between neutral Yb atom quantum computers. The goal is to create an atom-photon interface that enables highly efficient interconnections between neutral-atom quantum computers. Nanofiber cavities will be used to enhance atom-photon interactions that will significantly increase the efficiency of generating quantum entanglement, which is essential for inter-quantum computer communication. In addition, by storing multiple Yb atoms in nanofiber cavities, the project will parallelize entanglement sharing. These achievements, combined with Mitsubishi Electric’s qubit control technologies, are expected to realize high-speed, large-capacity communication between quantum computers.

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