IonQ, Inc. (NYSE: IONQ) announced Friday morning a breakthrough in networking quantum computers. The company entangled a trapped-ion qubit with a solid-state quantum memory at more than 1,000 connections per second, which IonQ says is over four times faster than the previous trapped-ion record. The result addresses one of the biggest bottlenecks in scaling quantum computing: linking separate machines fast enough to work as one. It comes just two days after IonQ advanced to the final stage of DARPA’s Quantum Benchmarking Initiative.

Key Points

• IonQ achieved entanglement rates above 1,000 per second (1 kHz) between a trapped-ion qubit and a silicon vacancy (SiV) quantum memory over a photonic interconnect.
• IonQ says the rate is more than four times the previous trapped-ion record, set by Chris Monroe’s group at Duke University.
• The work supports DARPA’s HARQ program, which seeks high-speed interconnects that work across different qubit types.
• On October 7, IonQ advanced to Stage C of DARPA’s Quantum Benchmarking Initiative, with up to $300 million in potential funding.

IonQ (NYSE: IONQ) Combines the Best of Two Qubit Types

The demonstration pairs two technologies with different strengths. Trapped-ion qubits, IonQ’s core platform, hold their quantum state exceptionally well. Solid-state memories, meanwhile, connect to light with unmatched efficiency. By linking a trapped-ion system to a SiV memory through photons, IonQ gets a fast, reliable bridge between quantum processors.

“IonQ has crossed a pivotal milestone for memory enhanced quantum interconnects,” said Chairman and CEO Niccolo de Masi.

IonQ tested the full link on real hardware and published the results in a technical paper, with a preprint available on arXiv. Researchers from Duke University co-authored the work.

“This demonstration sets the foundation for some amazing work to come,” said Chris Monroe, IonQ’s Chief Scientist and a Distinguished Professor at Duke.

Why Interconnects Matter for Quantum Data Centers

Large-scale quantum computers will likely need many smaller processors networked together, much like servers in a data center. Entanglement is the link that makes that possible, but slow connection rates have held the field back. Mihir Bhaskar, IonQ’s SVP and GM of Quantum Technologies, said the work “shows that a photonic quantum interconnect need not be a bottleneck for distributed quantum computing.”

IonQ also expects the architecture to work with other qubit types, including neutral atoms and superconducting systems through transducers. As a result, the interconnect could become a networking layer for the broader industry rather than just IonQ’s own machines.

IonQ (NYSE: IONQ) Is Already Selling the Platform

IonQ has begun commercializing its memory and interconnect technology. It made its first commercial sale of the platform to the University of Maryland in April and its second to SDT in South Korea in September.

Friday’s milestone also follows a major government vote of confidence. On October 7, IonQ was among the first companies selected for Stage C of DARPA’s Quantum Benchmarking Initiative, which runs through 2029 and could bring up to $300 million in funding. “Advancing to Stage C is a significant vote of confidence in IonQ’s technology roadmap,” de Masi said at the time.

IonQ is a member of the PRISM NextGen Tech & AI Index. Shares traded near $39 in early trading Friday, giving the company a market value of about $15 billion.

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COMTEX_1000966295/2927/2026-10-09T10:17:31