IBM has successfully connected and operated two modular cryogenic systems designed to support significantly larger quantum computers.
The architecture is intended to eventually connect hundreds of quantum chips inside a shared ultra-cold environment as IBM works toward its planned Quantum Starling fault-tolerant system in 2029.
Cooling Below 15 Millikelvin
The first two modules stand more than eight feet tall and eight feet wide.
IBM said initial testing demonstrated that the connected system could reach 4 Kelvin in less than five days before cooling below 15 millikelvin.
Each module also provides up to 12 times more wiring space than environments used by IBM’s most widely deployed quantum systems.
The additional wiring capacity is designed to support connections between a growing number of quantum processors.
IBM Prepares for 1,000 Programmable Qubits
IBM plans to use L-coupler technology to connect separate quantum processors so they can exchange information and operate as part of a larger system.
Quantum Nighthawk processors are expected to be installed in the cryogenic modules later this year for additional operational testing.
By 2027, IBM plans to connect multiple processors into a quantum computer containing at least 1,000 programmable qubits.
The modular cooling architecture is one component of IBM’s broader roadmap toward Quantum Starling, which the company plans to deliver in 2029 as a fault-tolerant quantum computer.