DARPA is about to get close to Microsoft's biggest quantum gamble yet

• DARPA will now test Microsoft's controversial quantum hardware inside a dedicated Maryland facility
• Majorana 2 uses a different approach to tackle quantum computing's stubborn error problem
• Microsoft is putting its topological quantum claims under independent government scrutiny

Microsoft has opened a 15,000 square foot quantum research center inside the University of Maryland's Discovery District, a year after the project was first announced.

The facility gives the Defense Advanced Research Projects Agency (DARPA) physical access to Microsoft's latest topological quantum system for independent testing.

Previously, DARPA and other outside researchers could only test Microsoft's hardware through cloud-based remote access, making this the first time an external agency will evaluate its topological hardware on-site.

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DARPA gets hands-on access to Majorana 2

The system installed for testing includes qubits built on Majorana 2, Microsoft's second-generation topological quantum computing chip.

Topological qubits are designed to reduce the burden of quantum error correction compared with other existing qubit approaches currently in use.

Quantum computers remain highly sensitive to environmental noise, meaning useful systems must detect and correct errors repeatedly while calculations are underway.