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Data center campus

IBM Quantum System One Kawasaki Japan

IBM Quantum System One Kawasaki Japan is a tracked AI data center campus in Kawasaki, Kanagawa, Japan. Japan's first gate-model commercial quantum computer, unveiled July 27, 2021 at the Kawasaki Business Incubation Center (KBIC) in the Shin-Kawasaki Sozo no Mori zone. It is the second IBM Quantum System One deployed outs

Energized · IBM · leased · other · Kawasaki, Kanagawa, Japan

Track IBM Quantum System One Kawasaki Japan

Capacity: announced vs energized

Announced
not recorded
Contracted
not recorded
Under construction
not recorded
Energized
not recorded
IBM Quantum System One Kawasaki Japan capacity claims
Source

Key facts

energized

Lifecycle

0 GW

Energized

IBM

Developer

Kawasaki, Kanagawa, Japan

Location

other

Grid

leased

Land

Reported facts

Structured facts sourced from citations already on this record. Each fact traces to a source in the References section below.

Significance
Japan's first commercial quantum computer (Jul 2021)
QPU
IBM Eagle 127-qubit
Partners
University of Tokyo
Clients
Toyota, Sony, Hitachi, JSR, Mitsubishi Chemical
Operator
University of Tokyo (facility hosted in an IBM-operated room at KBIC) under the IBM-UTokyo partnership
Commissioned
July 27, 2021; second IBM Quantum System One installed outside the United States (after Ehningen, Germany)
Original QPU
27-qubit Falcon r5.11 processor at launch (Quantum Volume 32)
2023 upgrade
Swapped to 127-qubit IBM Eagle processor
2025 upgrade
University of Tokyo announced May 15, 2025 upgrade to 156-qubit IBM Heron R2 processor (tunable-coupler, ~3-4x lower 2-qubit error, ~60% higher CLOPS vs prior Heron)
Consortium
Quantum Innovation Initiative Consortium (QIIC): UTokyo, Keio, Toshiba, Hitachi, Mizuho, MUFG, JSR, DIC, Toyota, Mitsubishi Chemical, Sony, Sumitomo Mitsui Trust, Yokogawa, IBM Japan; SoftBank joined 2023
HPC integration
Planned low-latency link to the Miyabi supercomputer operated by UTokyo and University of Tsukuba via JCAHPC, for quantum-centric supercomputing workloads
Host site
Kawasaki Business Incubation Center in the Shin-Kawasaki Sozo no Mori industry-academia zone (adjacent to the NANOBIC nanotechnology facility)
Cooling
Dilution refrigerator (He-3/He-4), operating stage ~15 mK inside the IBM cryostat

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The deal

operator
IBM

Power

Power source
grid
Grid operator
other
Interconnection
Water
No process water cooling disclosed. Quantum System One uses a closed-cycle dilution refrigerator with a helium-3/helium-4 mixture to hold the superconducting QPU near 15 mK; heat rejection is via the KBIC building's HVAC.

Why here

IBM Quantum System One Kawasaki Japan sits on leased in Kawasaki, Kanagawa, Japan. It connects to the other grid, draws on grid power. This siting summary is composed from the record's held fields, not speculation; see methodology.

Sources

b454db08-5a74-49cd-917d-a25d022166a4 · Tracked with DEPLOY's verified-vs-claimed methodology. Every term is defined in the glossary. Announced numbers are claims, not built capacity.

Head-to-head

IBM Quantum System One Kawasaki Japan vs IBM Quantum Data Center Ehningen →IBM Quantum System One Kawasaki Japan vs IBM Quantum System One at Rensselaer Polytechnic Institute →IBM Quantum System One Kawasaki Japan vs IBM Quantum System One at Yonsei University →IBM Quantum System One Kawasaki Japan vs IBM Quantum Data Center Poughkeepsie →IBM Quantum System One Kawasaki Japan vs IBM Quantum System One at Fraunhofer Institute →

Common questions

What is IBM Quantum System One Kawasaki Japan?
IBM Quantum System One Kawasaki Japan is an AI data center campus tracked on the DEPLOY registry, located in Kawasaki, Kanagawa, Japan. DEPLOY records its capacity as a dated, sourced ledger: announced gigawatts versus actually energized gigawatts, never a press-release total.
Who is building IBM Quantum System One Kawasaki Japan?
IBM is recorded as a party to IBM Quantum System One Kawasaki Japan on the DEPLOY registry. The full party list, with each role, is on the record.
Is IBM Quantum System One Kawasaki Japan operating yet?
As of the most recent verification on the DEPLOY registry, IBM Quantum System One Kawasaki Japan is energized and operating. DEPLOY tracks the lifecycle from announced through energized, so the current state reflects sourced evidence, not the original announcement.
How verified is the data on IBM Quantum System One Kawasaki Japan?
A human editor has reviewed this record for the indexed registry. Every capacity figure is an append-only, dated claim resolved to the highest-evidence tier; superseded claims are kept but excluded from the current view.

Deploy Watch

Track IBM Quantum System One Kawasaki Japan on Deploy.

We notify you when energized capacity, lifecycle state, or a new dated capacity claim changes against primary-source evidence, not when the developer issues a press release.

Cite this page

DEPLOY. (2026). IBM Quantum System One Kawasaki Japan: AI data center campus record. Retrieved August 26, 2026, from https://registry.deploy.report/datacenters/ibm-quantum-system-one-kawasaki-japan

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CC BY 4.0

The verified data on this page is available under a Creative Commons Attribution 4.0 license: reuse the facts freely, with attribution to DEPLOY (deploy.report). The prose, design, and any imagery are not included and keep their own rights.

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