IBM Advances Quantum Computing with Modular Cryogenic Cell Breakthrough
IBM has made significant progress in its quest to develop a fault-tolerant quantum computer. The company announced that it has successfully linked and cooled two modular cryogenic cells, a crucial step towards building its planned IBM Quantum Starling system, set for delivery in 2029.
The modular cell architecture is designed to replace traditional cylindrical 'chandelier' cryostats with rectangular, aluminum-framed units that can be placed side by side. This approach enables the use of short interconnect paths between adjacent quantum processing units (QPUs) using IBM's proprietary L-coupler technology.
According to IBM, each modular cell provides 2.75 cubic meters of internal vacuum volume and 0.53 square meters of wiring surface area, yielding up to 12 times more wiring space than traditional cryostats. This increased capacity will allow for the housing and cooling of at least 2,000 physical qubits per cell.
Initial operational tests demonstrated that the dual-module assembly cools from room temperature to 4 Kelvin (liquid helium range) in under five days before reaching sub-15 millikelvin base temperatures. This achievement marks a key hardware milestone for IBM's planned fault-tolerant quantum computer, which will have at least 1,000 programmable qubits by 2027 and serve as the foundation for the Starling system in 2029.