What Twinleaf does

Twinleaf LLC is a privately held, woman-owned small business founded in 2007 and headquartered in Plainsboro, New Jersey, that designs and manufactures precision magnetic field sensors and supporting quantum-sensing instrumentation. The company's product portfolio centers on optically pumped atomic magnetometers — including the PPM and PPMV pulsed pump magnetometers, the OMG optical gradiometer, the microSERF zero-field vector sensor, and the cost-effective VMR magnetoresistive unit — built on foundational research conducted by the founders at Princeton University. These instruments are designed for applications requiring femtotesla-level sensitivity, including quantum sensor research, GPS-independent navigation, geophysical survey, fundamental physics experiments, and industrial magnetic-field metrology.

The business model is B2B hardware sales with quote-based pricing: customers include U.S. government and defense programs, university physics departments, and industrial quantum-technology and semiconductor companies. Revenue is generated through direct sales (email quote requests processed at the Plainsboro headquarters) and through two international distributors — Integrators (Poland) for Europe and Podhikai Scientific (Bangalore) for India. Per-unit prices range from roughly $1,250 for current supplies up to $19,900 for the PPMV vector magnetometer, with magnetic shields priced at $7,996-$15,349 and vapor cells at $1,600-$2,000. Twinleaf complements its instruments with an integrated ecosystem of magnetic shields, ultra-low-noise current supplies, temperature controllers, microfabricated vapor cells, synchronization hubs, and a completely open-source software stack (TIO protocol with implementations in Rust, Python, C, and LabVIEW) plus a native iOS/iPadOS/macOS application for data visualization. The company is led by Thomas W. Kornack, Ph.D. (Chief Scientist, Princeton Ph.D., co-developer of the first SERF magnetometers) and Elizabeth L. Foley, Ph.D. (President, Princeton Ph.D.) and holds 11 issued US patents covering its core magnetometer and gyroscope technology.

Name

Twinleaf

Legal name

Twinleaf LLC

Website

https://twinleaf.com

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

1–10 employees

Short description

Twinleaf LLC is a privately held, woman-owned small business founded in 2007 that designs and manufactures high-sensitivity atomic magnetometers, magnetic shields, and supporting quantum-sensing instrumentation, selling primarily to government defense programs, university physics research groups, and industrial quantum-technology buyers through direct quote-based sales and European and Indian distribution partners.

Ownership category

akta.pro rank

Product category

Precision Scientific Instruments

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345), Other Measuring and Controlling Device Manufacturing (334519), Relay and Industrial Control Manufacturing (335314)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Electronic Coils, Transformers & Other Inductors (3677), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Magnetic Sensors (Hall/Magnetoresistive/Compass) (HDAHALAC)

akta.pro secondary industries

Sensor Fusion, Interface ICs & Modules (AFE/Readout/Packaging/Calibration) (HDAHALAO), Transformers & Magnetics (Power/Signal) (HDAHANAD), EMI/RFI Suppression Components (Ferrite Beads/Cores/Filters) (HDAHANAE)

Keywords

• Precision magnetometers
• Atomic sensors
• Magnetic shielding
• Quantum sensing
• Magnetoresistive sensors

Headquarters

HQ city

Plainsboro

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Others

Revenue model

1. Magnetic Field Sensors: Twinleaf designs and manufactures a range of atomic magnetometers and magnetoresistive sensors sold as finished instruments. Revenue is generated through direct product sales with quote-based pricing, including PPM, PPMV, OMG, VMR, microSAM, and microSERF (not currently for sale).
2. Magnetic Shields: High-performance magnetic shielding products including MS-1L, MS-1LF (ferrite), and MS-2 shields sold as finished units, with prices ranging from ~$8,000 to $15,000.
3. Current Supplies: Low-noise current supply units (CSB, CSBA, CSUA, CSB3) sold as finished instruments to excite magnetic field coils in shielding systems.
4. Vapor Cells and R&D Components: Custom-manufactured glass and microfabricated vapor cells for atomic physics research. Glass cells (minimum order of 5) priced at $1,600–$2,000 per cell; microfabricated cells at $1,600 each.
5. Government and Industry Contracts: Twinleaf develops sensor systems under contracts from government agencies, universities, and industry, which contributes to product development and commercialization.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Twinleaf designs, manufactures, and sells precision magnetic field sensors (atomic and magnetoresistive magnetometers), magnetic shielding systems, ultra-low-noise current supplies, and supporting R&D components such as vapor cells and heater controllers. The company's products are used by government agencies, universities, and industry for atomic physics research, quantum sensing, GPS-independent navigation, and precision magnetic field metrology.

Product overview

Twinleaf offers a comprehensive portfolio of precision magnetic field sensors and supporting equipment for atomic physics research and industrial applications. The core product line includes six magnetometer types: the PPM and PPMV (Pulsed Pump Magnetometers) providing the highest sensitivity scalar and vector measurements; the OMG (Optical Magnetic Gradiometer) for gradient measurements; the VMR (Magnetoresistive Vector Magnetometer) as a cost-effective option; and the microSAM and microSERF microfabricated sensors for compact applications. These sensors are complemented by magnetic shielding products (MS-1L, MS-1LF, MS-2) and the DG degaussing unit for controlled magnetic environments. Supporting infrastructure includes low-noise current supplies (CSB, CSBA, CSB3, CSUA), the TCHF heater controller, and vapor cells for atomic physics R&D. Communication is enabled via the proprietary TIO protocol with software tools in Rust, Python, and C, plus synchronization hubs (HUB-8TDS, HUB-8TTS) for multi-sensor systems. All products are supported by open-source software and the Twinleaf App for data visualization.

Differentiator

Problem solved

Functional benefit

Products and services

• PPM (Pulsed Pump Magnetometer) Highest performance total field magnetic field sensor commercially available, with sensitivity better than 200 fT/√Hz, extraordinary dynamic range, and immediate recovery from transient magnetic pulses. For atomic physics research, geophysics, and precision sensing applications.
• PPMV (Pulsed Pump Vector Magnetometer) Atomic magnetometer with exceptional vector field sensitivity (2 pT/√Hz vector, 0.2 pT/√Hz total field) and accuracy, combining a pulsed pump total field magnetometer with a vector coil. For high-stability vector measurements in research and industry.
• OMG (Optical Magnetic Gradiometer) High-performance total field magnetometer and gradiometer with sensitivity <0.2 pT/√Hz, high bandwidth, and two measurement locations forming a gradiometer to measure small local signals underneath background noise.
• VMR (Magnetoresistive Vector Magnetometer) Cost-effective magnetoresistive vector magnetic field sensor with nanotesla precision, excellent stability, low drift, integrated MEMS gyroscope, accelerometer, and barometric pressure sensor. Reliable sub-nT resolution for industrial applications.
• microSAM (Total Field Magnetometer) Ultra-compact microfabricated total field optical magnetometer (1.8×1.8×13.4 cm, 200 g, 2 W) with integrated control unit and 20 pT/√Hz sensitivity at 500 Hz bandwidth. For portable and embedded applications.
• microSERF (Zero Field Vector Magnetometer) SERF regime-based vector magnetometer exploiting zero-field resonance of alkali metal atoms with a microfabricated cell positioned near the sensor tip, achieving <30 fT/√Hz sensitivity near zero field. Not currently available for sale.
• MS-2 Magnetic Shield Largest internal volume four-layer mu-metal magnetic shield (⌀18 cm × 36 cm) with shielding factor of 10⁶ and internal 3-axis magnetic field coil system for precision field control. For shielded laboratories and precision experiments.
• MS-1L Compact Magnetic Shield Compact four-layer mu-metal magnetic shield (⌀14 cm × 16 cm) with 16 fT/√Hz noise floor and internal field coil system for precision magnetic field control.
• MS-1LF Ferrite Magnetic Shield Compact magnetic shield with inner ferrite layer providing the lowest available room temperature magnetic noise environment (1 fT/√Hz) for ultra-precision magnetic field measurements.
• DG (Digital Degaussing Unit) Digital degaussing unit that automates magnetic shield degaussing by applying an oscillating magnetic field with digitally synthesized waveform. Pairs with MS-1L or MS-2 shields.
• CSB (Programmable Bipolar Current Supply) Very low noise programmable bipolar current supply (±1000 mA) with digital and analog controls, 18-bit programming resolution, and galvanic isolation to prevent ground loops. For driving magnetic field coils.
• CSBA (Low Noise Bipolar Current Supply) Low noise bipolar current supply with analog control via single 10-turn knob, available in ±10 mA and ±250 mA ranges. Includes modulation input.
• CSB3 (Three-Channel Bipolar Current Supply) Three-channel low noise programmable current supply with independent output channels (±10 mA, ±50 mA, ±250 mA) referenced to ground, powered via USB.
• CSUA (Ultra Low Noise Current Supply) Lowest noise commercially available current source using modern Libbrecht-Hall design, with 1 nA/√Hz noise density and 0-1000 mA range. For driving magnetic field coils in shielding systems.
• TCHF (AC Heater Controller) High frequency alternating current heater controller (up to 1 MHz) that minimizes angular perturbation of atomic spins for optical vapor cell heating. Includes USB power/communication.
• Vapor Cells (Glass and Microfabricated) Glass and microfabricated vapor cells with alkali metals (Rubidium, Cesium, Potassium) and buffer gases (nitrogen, neon, helium-4) for atomic physics research. Minimum order 5 units for glass cells.
• HUB-8TDS (Synchronization Hub) Synchronization hub supporting up to 8 sensors via TDS sensor link with USB power input, SD card logging, and external PPS synchronization. For multi-sensor systems.
• HUB-8TTS (Synchronization Hub) Synchronization hub with internal GPS antenna for location and time synchronization, supporting 8 sensors via TTS sensor link. For multi-sensor field deployments.
• Twinleaf App (iOS/macOS) Native macOS, iPad, and iPhone application for viewing, plotting, and recording live data from Twinleaf sensors with real-time plotting, FFT views, and multi-stream support.

Quantifiable outcome

• PPM achieves better than 200 fT/√Hz sensitivity — the highest commercially available
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature11 records

Partnerships

One partnership is on record.

• IntegratorscoreChannel Partner/ Reseller/ DistributorIntegrators (Bukowa 46/6, 41-600 Swietochlowice, Poland) is Twinleaf's official distributor for European customers. Contact person: Darek Demarczyk (+48 509 72 48 07). Handles sales, pricing, and support for European customers outside domestic USA pricing.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• QuSpin: QuSpin commercializes SERF and OPM magnetometers for biomagnetism, geophysics, and defense applications. It is the closest direct competitor to Twinleaf's atomic magnetometer portfolio, particularly in the SERF regime where both companies compete on sensitivity and form factor.
• Metrolab: Metrolab manufactures precision magnetometers (NMR and Hall-effect probes) used in MRI, NMR spectroscopy, and laboratory metrology. It competes with Twinleaf in high-precision magnetic field measurement, particularly for scientific and medical applications.
• Bartington Instruments: Bartington makes fluxgate magnetometers, gradiometers, and magnetic shielding for laboratory, industrial, and defense applications. It is a direct competitor in vector magnetic field sensing and magnetic environmental control, though at lower sensitivities than Twinleaf's atomic instruments.
• Geometrics: Geometrics manufactures magnetometers and gradiometers for geophysical survey, mineral exploration, and environmental monitoring. It is a comparable precision magnetic field sensor company focused on field-deployable instruments and overlaps with Twinleaf's geophysics segment.
• GMW Associates: GMW Associates designs and manufactures precision magnetic sensors, gaussmeters, electromagnets, and magnetic shielding systems for laboratory and industrial customers. It is a direct competitor in complementary magnetic instrumentation — particularly shielding and current supply products that overlap with Twinleaf's MS-series and CS-series lines.
• AOSense: AOSense develops atom-optic and quantum-based sensors including atomic gyroscopes, gravimeters, and magnetometers for defense and geophysical applications. It is a comparable precision atomic sensor company serving adjacent defense and inertial navigation markets.

Emerging players

• Vector Atomic: Vector Atomic develops quantum sensors for GPS-free navigation and precision timing, using cold-atom and other quantum sensing modalities. It overlaps with Twinleaf in defense PNT and navigation markets but pursues a different (cold-atom) technology approach.
• QZabre: QZabre commercializes nitrogen-vacancy (NV) diamond magnetometers for nanoscale magnetic imaging. While the technology approach (NV centers) differs from Twinleaf's alkali-vapor atomic magnetometry, both serve high-sensitivity magnetic field measurement markets in research and industry.

Broad incumbents

• Infleqtion (formerly ColdQuanta): Infleqtion is a quantum technology platform company with products spanning cold-atom sensors, atomic clocks, and quantum computing components. It competes with Twinleaf across navigation, geophysics, and quantum sensing use cases with substantially greater capital and a broader product portfolio.

Others

• Twinleaf distributor: Integrators (Poland): Listed here as a known Twinleaf channel partner rather than a peer; included only as a reference point for Twinleaf's European distribution footprint. Omitted from primary peer ranking as it is not a competing firm.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• GitHubgithub.com/twinleaf

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Twinleaf