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

TOKYO--(BUSINESS WIRE)--Apr. 23, 2025-- Mitsubishi Electric Corporation and Nanofiber Quantum Technologies Inc. (NanoQT) announced today the immediate launch of a joint demonstration aimed at establishing interconnection technologies for neutral-atom quantum computers.

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.

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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Source: Mitsubishi Electric Corporation