Why DARPA Is Turning Its Attention to Quantum Manufacturing

Insider Brief

• DARPA has launched the “It’s About Time” program to establish a pilot manufacturing pipeline for optical clocks.
• The initiative builds on DARPA’s ROCkN and OASIC programs, which advanced compact optical clocks while developing manufacturing, testing, packaging and integration practices needed for larger-scale deployment.
• IonQ, through its Vector Atomic subsidiary, will establish the manufacturing pipeline, with a production facility expected to open by mid-2027 and deliverable optical clock units planned within about a year of its completion.
• Image: Photo by Immo Wegmann on Unsplash

DARPA is shifting more of its attention from demonstrating quantum technologies in the laboratory to figuring out how to manufacture them at scale, according to a news release from the agency.

The U.S. Defense Advanced Research Projects Agency this week launched It’s About Time, a new program intended to establish a pilot manufacturing pipeline for tactical-grade optical clocks—ultra-precise timekeeping devices that use the frequency of light rather than microwaves to keep time. The effort aims to show that quantum technologies can be built, tested and integrated consistently enough for operational deployment rather than produced as one-off laboratory systems.

The announcement comes as DARPA awarded IonQ, through its recently acquired subsidiary Vector Atomic, a contract to establish the manufacturing pipeline. While that award drew attention because of IonQ’s growing role in quantum networking and sensing, DARPA’s announcement highlights a broader objective: addressing the engineering and manufacturing challenges that remain after scientific proof of concept has been achieved.

“For too long, the quantum community has driven the state-of-the-art exclusively within the laboratory, but these innovations rarely make it into the field,” Mukund Vengalattore, DARPA program manager for It’s About Time and several related quantum sensing programs, said in the news release.

Optical clocks are among the most accurate timekeeping devices ever developed. They can maintain extraordinarily precise timing over long periods and could eventually enable navigation without GPS, improve synchronization across military communications networks and support advanced sensing applications.

Despite those capabilities, DARPA says producing quantum systems outside research laboratories remains difficult. Many devices are still assembled in small quantities by highly specialized teams, with limited standardization for manufacturing, testing or calibration.

“No one has successfully attempted to scale quantum manufacturing because integrating, miniaturizing, and ruggedizing the complex, quantum-adjacent components, such as advanced lasers and integrated photonics, is exceptionally difficult even within a single prototype – let alone at scale,” Vengalattore said, according to the news release. “Solving this manufacturing, ruggedization, and integration bottleneck is a DARPA-level problem that will open the door to a large opportunity space across several areas relevant to the Department of War.”

The new initiative builds on two earlier DARPA efforts.

The Robust Optical Clock Network (ROCkN) program spent roughly five years developing compact optical clocks capable of operating outside controlled laboratory environments. During that effort, DARPA said researchers progressed from breadboard demonstrations to field-tested prototypes designed for operational conditions.

“From the outset, we did not want ROCkN to be just another clock program – content with building a fragile prototype here, or with fabricating a small component of a larger system there. We wanted to demonstrate that exquisite laboratory-grade performance could be attained, with the correct approach, in operational environments relevant to the DoW. Along the way, we also recognized the need for specialized quantum testbeds to prototype and validate the underlying quantum-enabling technologies,” Vengalattore said in the release.

A companion program, Optical-Atomic System Integration & Calibration (OASIC), focused on the less visible aspects of commercialization, including component specifications, packaging, testing procedures, calibration methods and system integration. According to DARPA, those efforts helped define the manufacturing and validation processes needed to support larger-scale production.

“In the quantum domain, the conventional wisdom – that physicists demonstrate the art of the possible in a highly controlled laboratory environment, and then engineers go on to build the eventual system – is fundamentally flawed. As demonstrated within ROCkN, the components, architecture, system-level design choices, testing, and validation need to be closely tied to both the underlying quantum physics and to the operational requirements of the technology,” Vengalattore said. “Building upon ROCkN, OASIC, and It’s About Time, the intent is to translate this paradigm of resilient quantum manufacturing and rapid quantum technology transition to other areas of interest including quantum RF sensors, infrared imaging systems, and beyond.”

DARPA’s philosophy is in sync with a broader trend across the quantum industry. As companies move beyond research demonstrations toward commercial products, attention has increasingly shifted to questions of manufacturability, reliability and supply chains alongside advances in qubit performance or sensing precision.

DARPA said the manufacturing approach developed through It’s About Time could ultimately extend beyond optical clocks to other quantum technologies, including radio-frequency sensors and infrared imaging systems. The agency views optical clocks as an initial proving ground because they combine mature quantum science with demanding engineering requirements.

The program also shows the strategic importance of resilient timing technologies. Optical clocks capable of maintaining picosecond-level precision without relying on GPS could provide an alternative source of timing and synchronization for military platforms operating in environments where satellite signals are unavailable or intentionally disrupted.

“By demonstrating that robust mass production is possible, we can create the economies of scale necessary to rapidly adopt these ruggedized, size, weight, power, and cost (SWaP-C) relevant capabilities across DoW platforms in operationally relevant environments,” Vengalattore said. “Precision timekeeping and synchronized communication, operating independently of GPS in contested environments, and other related capabilities creates unparalleled resilience and strategic alignment for our warfighters.”

Under the program, IonQ and Vector Atomic are expected to establish the optical clock manufacturing pipeline, with a manufacturing facility planned to open by mid-2027. DARPA said production units are expected to become available within approximately one year after the facility is completed.