One Benchmark From AT&T Just Moved a Quantum Stock 20%

D-Wave Quantum (QBTS) stock jumped over 20% on Monday after AT&T signed an agreement to expand the use of the company's quantum computing technology across its network operations.

The rally reflects more than one deal. Early results suggest quantum computing is already solving practical business problems, years ahead of the timelines many observers expected.

AT&T Expands D-Wave Quantum Computing Across Its Network

The telecom giant announced plans to apply D-Wave's annealing quantum systems to complex optimization challenges across its network. In early work, one network optimization workload dropped from roughly one hour to under 15 seconds.

AT&T will first layer the technology into the agentic artificial intelligence (AI) tools that already run parts of its network. Those tools reduced customer downtime by 12 million hours in 2025, according to the company.

Broader applications may follow, including outage detection and response, technician routing, network build planning, and traffic management. AT&T is also evaluating D-Wave's upcoming gate-model systems for quantum security and communications. Financial terms were not disclosed.

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