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Defense and Intelligence Agencies: How the US Military Views Quantum

Updated | 4 min read | QUANTUM (QNT) community

Three jobs quantum could do for national security

Defense and intelligence officials do not usually talk about quantum as a science project. They talk about problems they already have. Quantum technology touches three of them. First, navigation and sensing: quantum sensors can measure motion, gravity and magnetic fields very precisely (see quantum sensing explained). Second, codebreaking risk: a large quantum computer could break today's public key encryption (see Shor's algorithm). Third, secure communication and computing: protecting data for decades, and maybe using quantum machines for hard simulation.

Sensing: the nearest-term military use

Quantum sensing may reach the field before large quantum computers do. The Defense Innovation Unit (DIU) reported on March 12, 2025 that its Transition of Quantum Sensing (TQS) program was moving to field testing across five lines of effort: quantum inertial sensors, gravimeters, magnetic anomaly detection, magnetic navigation, and technology insertion and component development. The release said the first phase of about 12 months would include more than 10 field tests across ground, air and maritime settings. Examples included inertial sensors on Air Force, Space Force and Navy platforms, atomic gravimeters for gravity aided naval navigation, and magnetic navigation for aircraft when GPS is unavailable.

The named industry performers in that release included large and small firms such as Lockheed Martin, Northrop Grumman, Honeywell, Q-CTRL, Vector Atomic and others. Government partners included the Office of Naval Research and the Air Force Research Laboratory. The plain English point: GPS can be jammed, and quantum navigation could offer a backup that does not depend on satellites.

Computing: DARPA and the services

For quantum computers themselves, the Pentagon's most visible effort is DARPA's Quantum Benchmarking Initiative, covered in its own guide. We will not repeat it here. One related note: the New Mexico agreement with DARPA, reported in September 2025, was described as supporting QBI, and DARPA's program manager said it lets the agency use the state's testing infrastructure to verify the claims of quantum computing companies. See the state programs guide.

Cryptography: NSA's calendar

The National Security Agency published its Commercial National Security Algorithm Suite 2.0 (CNSA 2.0) in September 2022. A summary by PostQuantum.com lists these milestones for national security systems:

That source also lists end of 2031 and 2033 milestones, and another search summary gave slightly different category dates, so treat individual dates as reported and read NSA's advisory for the authoritative version. For the broader story, see the deadlines guide and harvest now, decrypt later, the worry that adversaries copy encrypted data today to read it later.

The intelligence community

A search summary reports that the Director of National Intelligence's 2026 Annual Threat Assessment said a cryptographically relevant quantum computer, which no country has yet built, would threaten the encryption behind online transactions and communications. The intelligence community's research arm, IARPA, has also been reported to run an Entangled Logical Qubits program. We did not find an intelligence-wide migration deadline separate from NSA's guidance, so we do not claim one.

Congress and the defense bill

The annual National Defense Authorization Act (NDAA) is a common vehicle for quantum policy. Nextgov reported in September 2025 that lawmakers had filed nearly a dozen quantum amendments to the fiscal year 2026 NDAA, and in June 2026 that Senator Todd Young planned to try attaching a National Quantum Initiative reauthorization to the fiscal year 2027 bill. We could not confirm from the sources we read which fiscal 2026 amendments became law, so check the enacted text. The reauthorization story is in its own guide.

Why this is exciting

Defense customers are demanding. If a quantum sensor works on a ship or an aircraft, it works in a lot of places. Defense buying also gives young hardware companies a steady first customer, which can help a technology cross from lab to product. That is how GPS and the internet got going too.

Honest limits

Sources and further reading

Reported as of 2026-10-09. Government programs change often, so check the primary documents before relying on any figure. This site is educational and is not financial advice. The QNT memecoin is independent and has no link to Quantinuum Ltd, any lab or any government program.

Frequently asked questions

Why does the military care about quantum?

Mainly for sensors that work without GPS, for the risk to encryption from a future large quantum computer, and for protecting secrets over many years.

What is DIU's quantum sensing program?

Transition of Quantum Sensing, which DIU reported moving to field testing in March 2025 across inertial sensors, gravimeters, magnetic anomaly detection, magnetic navigation and components.

When must national security systems be quantum resistant?

NSA's CNSA 2.0 plan, as summarized in secondary sources, reaches 2035 for full transition, with earlier milestones from 2025 to 2033. Read NSA's advisory for the exact dates.

Does defense interest move the QNT memecoin?

Nobody can promise that, and QNT has no link to any agency or to Quantinuum Ltd. This is not financial advice.

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