Quantum Spectrum RF sensing by Infleqtion: status and timeline

Quantum Spectrum RF sensing

Atom-based radio-frequency sensing using Rydberg atoms. Detects and classifies RF signals hertz to terahertz in a single aperture, resilient against jamming and spoofing.

PilotStage 3 of 5

Field programs with U.S. Army, UK, Australia (2026).

Updated 13 May 2026Checked 10 Oct0 updates this week

Milestones

Next · RIQER field program with U.S. Army Research Lab

Quantum Spectrum RF sensing platform announced13 May 2026Complete.
RIQER field program with U.S. Army Research LabTarget 2026Current milestone.
Transportable quantum RF receiver demonstrationTarget Q4 2026Not yet reached.
Field trials in UK and Australia underwayTarget 2026Not yet reached.

Most important updates

Infleqtion launches Quantum Spectrum, atom-based RF sensing platform for contested environments13 May 2026

Upcoming

2026RIQER field program with U.S. Army Research Lab (next)
2026Field trials in UK and Australia underway
Q4 2026Transportable quantum RF receiver demonstration
Q1 2027International field trials results

Current obstacles

TransportabilityMoving quantum RF systems from the lab to the field requires ruggedization of lasers, vacuum systems and electronics.
Sensitivity in contested environmentsHigh-power jamming signals and electromagnetic background still present challenges to maintaining quantum coherence.

Physics limits

Real-time processing must keep paceSignals arrive continuously. Detection and classification must happen in real time without losing transient events.
Vacuum systems are complexRydberg atoms require ultra-high vacuum and cooling. Maintaining this in field conditions with vibration and temperature swings is challenging.

How it works

3 parts

Rydberg atoms

Excited atoms detect RF

Atoms excited to Rydberg states interact strongly with RF fields, replacing conventional front ends.

Broadband sensing

Frequency agility

By changing the laser frequencies that excite the atoms, the sensor tunes across the RF spectrum continuously from hertz to terahertz without filtering.

Single aperture

No antenna arrays needed

A single cloud of Rydberg atoms replaces an antenna array, simplifying the receiver and improving resilience against direction-finding by adversaries.

Spec sheet

Spec	Quantum Spectrum RF sensing
Coverage	Hz to THz^R (reported)
Key advantage	Tunes across RF spectrum in single aperture^R (reported)
Jamming/spoofing resilience	Quantum-based immunity to conventional RF attacks^R (reported)

^R reported by the company

Update log

1 update

Wed 13 May

Major: Infleqtion launches Quantum Spectrum, atom-based RF sensing platform for contested environmentsPressHardware

About Infleqtion

The team behind Quantum Spectrum RF sensing

Infleqtion

Neutral-atom quantum computers, optical atomic clocks, RF sensing

Infleqtion builds neutral-atom quantum computers and sensing systems. First neutral-atom company to go public (NYSE: INFQ, Feb 2026). Targets fault-tolerant quantum systems and precision timing.

Infleqtion went public on the NYSE (INFQ) in February 2026, raising over $550 million. It is the first neutral-atom quantum company to list.
Achieved 30 logical qubits on Sqale in Sept 2026, first for neutral-atom.
Commercializing quantum timing (Tiqker) and RF sensing systems for defense.

infleqtion.com (opens infleqtion.com)Company profile →

Founded: 200719 yrs
Headquarters: United States
Status: Public
Listed: INFQ (opens google.com)NYSE
Valuation: $1.8Bmarket capSep 2026
Staff: ~183Aug 2026
Raised: $210M2 rounds
Last round: NYSE IPO (Churchill X SPAC merger) · $550M17 Feb 2026
Works in: QuantumNeutral atom
Coverage: 3 programs · 6 updateslatest 17d agochecked 10 Oct
Lead investors: Glynn CapitalCounterpoint Global
Customers: Illinois Quantum & Microelectronics Park (opens il-quantum.org)
Partners: NVIDIA (opens nvidia.com)Safran Electronics & Defense (opens safran-electronics-defense.com)U.S. Army Research Laboratory (opens arl.army.mil)
People: Matthew Kinsella (opens infleqtion.com)CEOPranav Gokhale (opens infleqtion.com)CTOMark Saffman (opens en.wikipedia.org)Chief Scientist

Spec

Quantum Spectrum RF sensing

Coverage

Hz to THz^R (reported)

Key advantage

Tunes across RF spectrum in single aperture^R (reported)

Jamming/spoofing resilience

Quantum-based immunity to conventional RF attacks^R (reported)