Nanofiber Quantum Technologies Inc.

Nanofiber Quantum Technologies Inc. (NanoQT) is a Japanese quantum technology company focused on building the infrastructure for networked quantum computing. Rather than developing a monolithic quantum processor alone, NanoQT works on the connectivity layer: cavity-QED based, fiber-native interconnects that link quantum processing units (QPUs) and enable entanglement to be distributed across distant modules. The company describes its mission as making quantum computing globally accessible through scalable, connected systems. The core of NanoQT's technology is the nanofiber cavity — a millimeter-long nanophotonic structure fabricated directly from optical fiber. Using proprietary manufacturing, a significant portion of the light travels outside the fiber while remaining guided, creating an ultra-low-loss, scalable cavity system. These nanofiber cavities are designed for seamless interface with neutral-atom qubits, allowing direct integration into neutral-atom QPU systems. The interconnect converts local atom-photon entanglement into remote atom-atom entanglement, addressing a key challenge for both distributed quantum computing and quantum communication. NanoQT was co-founded in 2022 and is led by co-founder and CEO Masashi Hirose, Ph.D., who also serves on its Board of Directors. The company presents itself as a team guided by a global perspective and grounded in Japan's tradition of engineering excellence, with three stated guiding principles: being global, bold, and honest; focusing on hard and critical issues to drive impact; and fostering an entrepreneurial environment. The company has attracted both public and private backing. In September 2025 it announced the first closing of a $14 million Series A funding round aimed at redefining quantum computing. In June 2026 it was selected for a NEDO PCA phase with over $5.6 million in subsidy to advance cavity-QED quantum communication technology. NanoQT maintains transparency in its scientific progress by publishing results on arXiv and in peer-reviewed journals, including work in Physical Review Applied and PRX Quantum on quantum interconnects, passive quantum interconnects, and entanglement boosting for distributed fault-tolerant quantum computation.

Nanofiber Quantum Technologies Inc. (NanoQT) is a Japanese quantum technology company co-founded in 2022. It is led by co-founder and CEO Masashi Hirose, Ph.D., who has served on its Board of Directors and has been pivotal in the company since its founding. The company is grounded in Japan's tradition of engineering excellence while pursuing a global perspective. From its inception, NanoQT has focused on the connectivity layer of quantum computing rather than on monolithic quantum processors alone. Its stated rationale is that today's quantum processing units (QPUs) remain monolithic and disconnected from communication channels, which limits scalability, restricts use to single users and locations, and creates a fundamental bottleneck to achieving quantum advantage in both computing and communication. NanoQT's answer is to build the infrastructure for networked quantum computing through cavity-QED based, fiber-native interconnects. The company's core innovation is the nanofiber cavity — a millimeter-long nanophotonic structure fabricated directly from optical fiber. With proprietary manufacturing, a significant portion of the light travels outside the fiber while still staying guided, creating an ultra-low-loss, scalable cavity system. These nanofiber cavities are designed for seamless interface with neutral atom qubits, enabling direct, scalable integration into neutral-atom QPU systems. The interconnect converts local atom-photon entanglement into remote atom-atom entanglement, extending entanglement across distant modules while remaining fully compatible with QPU operations. NanoQT has pursued both private and public funding. On September 24, 2025, it announced the first closing of a $14 million Series A funding round to redefine quantum computing. On June 2, 2026, it was selected for a NEDO PCA phase with over $5.6 million in subsidy to advance cavity-QED quantum communication technology. The company emphasizes transparency in its scientific progress, publishing results on arXiv and in peer-reviewed journals. Its published work includes 'Strong coupling of a reconfigurable 171Yb atom array to a tunable telecom-band nanofiber cavity' (arXiv, September 21, 2026), 'Passive quantum interconnects: multiplexed remote entanglement generation with cavity-assisted photon scattering' (Physical Review Applied, September 10, 2026), and 'Entanglement boosting: Low-volume logical Bell pair preparation for distributed fault-tolerant quantum computation' (PRX Quantum, July 14, 2026).

• 2022

  Company co-founded; Masashi Hirose, Ph.D. begins as co-founder.

• Announced first closing of $14 million Series A funding to redefine quantum computing.

• Selected for NEDO PCA phase with over $5.6 million subsidy to advance cavity-QED quantum communication technology.

• Published 'Entanglement boosting: Low-volume logical Bell pair preparation for distributed fault-tolerant quantum computation' in PRX Quantum.

• Published 'Passive quantum interconnects: multiplexed remote entanglement generation with cavity-assisted photon scattering' in Physical Review Applied.

• Published 'Strong coupling of a reconfigurable 171Yb atom array to a tunable telecom-band nanofiber cavity' on arXiv.

Infrastructure provider for scalable, networked quantum computing through cavity-QED based, fiber-native interconnects.

• Nanofiber cavity

  A millimeter-long nanophotonic structure fabricated directly from optical fiber; with proprietary manufacturing, a significant portion of the light travels outside the fiber while still staying guided, creating an ultra-low-loss, scalable cavity system.

• Fiber-native quantum interconnect

  Cavity-QED based interconnect that converts local atom-photon entanglement into remote atom-atom entanglement, extending entanglement across distant modules while remaining fully compatible with QPU operations.

1. 1Scalable Quantum Computing - Nanofiber Quantum Technologiesnano-qt.com
2. 2About - Nanofiber Quantum Technologiesnano-qt.com
3. 3Quantum Technology - Nanofiber Quantum Technologiesnano-qt.com
4. 4Nanofiber Quantum Technologies Inc. - Wikidatawikidata.org