Revolutionizing Quantum Spectrum
Quantum Spectrum: Next-Generation RF Sensing
Infleqtion’s quantum spectrum technology uses Rydberg atomic sensing to detect, locate, asses, and classify RF signals, replacing traditional RF antennas and unlocking unmatched broadband sensitivity and compact deployment.
Revolutionizing Spectrum Sensing with Quantum
Quantum spectrum technology leverages Rydberg (excited) atomic states to detect RF signals without traditional antennas or solid-state analog receivers.
The result: ultra-broadband reception, compact deployment, and resilience in environments where drone proliferation, GPS spoofing, jamming, electronic warfare, and spectrum congestion are increasingly challenging.
How Quantum Spectrum Sensing Technology Works
Quantum spectrum replaces conventional RF front ends with a three-step quantum sensing process:
- Laser Excitation: Excites atoms to Rydberg states.
- RF Interaction: RF field perturbs atomic energy levels.
- Optical Detection: Changes in probe beam detected, converting RF to optical domain.
This is similar to RF photonics, but with no antenna, enabling a smaller aperture and broader operational range.
Key Advantages of Quantum Spectrum
Full-spectrum sensing from small aperture.
Ultra-broadband coverage (3 MHz–6 GHz, roadmap to sub-kHz – 100s GHz).
Robust against interference in complex RF environments.
Rugged, modular, and compact SWaP system.
Scalable roadmap for future miniaturization & performance expansion.
Enabling RF Convergence
Infleqtion’s single, multi-channel quantum spectrum receiver can simultaneously replace HF/VHF/UHF, L/S Band, C-Brand, X-Band, and Ku/K-Band receivers.
Quantum Spectrum Product Roadmap
Infleqtion’s quantum spectrum technology is evolving toward smaller, lighter, and more capable systems.
Gen 1: 9U, 3 MHz–6 GHz
Gen 2: 4U, 1 MHz-12 GHz
Gen 3: Modular Rugged VPX Product
PIC-Enabled Quantum Spectrum Sensing: Ultra-Broadband in Compact Form
Quantum spectrum receivers demand precision optics to detect weak signals across wide bandwidths. Integrated photonics delivers the miniaturization and ruggedization required to deploy quantum spectrum technology beyond the lab onto mobile and fielded platforms. Leveraging silicon photonics, Infleqtion is engineering chip-scale quantum spectrum receivers that combine ultra-sensitivity with practical deployment. Future quantum spectrum systems will include PIC-based lasers, plus a miniature PIC-based Tiqker sub-system for laser frequency control and timing.
Quantum Spectrum Applications
Defense & Security
Detect and monitor RF signals in GPS-denied or contested environments.
Spectrum Monitoring
Identify interference, manage spectrum resources.
Communications
Enable advanced signal processing and new comms architectures.
Additional Resources
Panel: Quantum Sensing at Scale: Navigating Commercialization Roadblocks | Market Accel. | QWC 2025
Session: Bringing Quantum RF to Market, in support of Modern Communications & Sensing | Q2B25 Tokyo
Webinar: Quantum Technologies for National Resilience and Security
SqyWire: Revolutionizing RF Communication with Quantum Technology
Panel: State of the Domain: Quantum Sensors | Quantum World Congress 2023
Podcast: Quantum Clocks, Sensing, and, of course, Computing― with Infleqtion | Ep. 56
Webinar: Microwave Sensing with Rydberg Atoms feat. Dr. Haoquan Fan
Webinar: Quantum Signal Processing feat. Dr. Dana Anderson
Webinar: Quantum Atomic Opportunities feat. Dr. Williamson
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