Quantum device measures ampere volt ohm

Quantum Breakthrough: Scientists Create Device to Measure Ampere, Volt and Ohm in One System

Depiction of a current measurement using the integrated system. Source: Nature Electronics (2025). DOI: 10.1038/s41928-025-01421-2.

Introduction

Scientists have unveiled a revolutionary quantum-based device capable of accurately recording all three fundamental electrical units: the ampere (current), the volt (potential) and the ohm (resistance). Unit now, no instrument could perform these three precise measurements within a single system. This innovation marks a historic milestone in metrology, opening new possibilities for precision engineering and minimizing human error in electrical measurements.

How the Device Works

Bringing Two Quantum Systems Together

Jason Underwood and his team at the National Institute of Standards and Technology (NIST) in Maryland demonstrated the feasibility of this device by combining two critical quantum systems inside one cryostat:

  • The Quantum Anomalous Hall Resistor (QAHR)
  • The Programmable Josephson Voltage Standard (PJVS)

The cryostat plays a vital role by maintaining ultra-low temperatures, which are necessary for the systems to function effectively.

Overcoming Major Challenges

Quantum Systems at Odds

Merging both systems was not straightforward. Each relies on delicate quantum effects visible only at extremely low temperatures. A further complication was that one system demands a strong magnetic field, while the other's performance deteriorates in its presence.

The Breakthrough Material

The research team resolved this by utilizing an advanced material that enables quantum functionality without the need for an external magnetic field. This scientific leap forward finally made it possible to integrate both systems into a single multifunctional device.

For a deeper understanding of how quantum integration works, you can explore related insights on FSNews365, which discusses quantum entanglement and universal laws in emerging technologies.

Performance and Accuracy

Exceptional Measurement Capabilities

The quantum device operates under the principles of quantum mechanics, offering unmatched accuracy compared to traditional instruments.

Key achievements include:

  • Voltage measurements ranging from 0.24 millivolts to 6.5 millivolts
  • Highly precise resistance calculations
  • Reliable electrical current readings with minimal error rates

These results place the device at the forefront of next-generation metrology tools.

Implications for Science and Technology

Redefining Electrical Standards

The findings, published in Nature Electronics, could transform how laboratories and measurement institutes define and apply electrical standards.

Applications include:

  • Electronics manufacturing, where consistency is critical
  • Scientific research, requiring accurate data collection
  • Medical diagnostics, dependent on reliable electrical measurements

Broader Material Science Innovations

The researchers suggest that this innovation will inspire new developments in topological materials and improvements in cryostat engineering. In their words:

"Our hope is that this first step towards a multifunctional quantum instrument will encourage innovation in topological materials and in the design and engineering of cryostats."

Future Prospects

Towards Universal Quantum Instruments

This breakthrough represents a stepping stone toward universal quantum devices capable of multi-parameter measurement. Future iterations may further reduce errors, improve scalability and even enable versions suitable for widespread use.

Cross-Disciplinary Impact

Beyond pure physics, this advancement could support:

  • Climate monitoring technologies
  • Next-generation semiconductors
  • Healthcare innovations, such as precision bioelectronics

for more perspectives on how technology shapes global issues, visit Earth Day Harsh Reality, which highlights the environmental and scientific importance of sustainable innovations.

Connecting Science, Health and Society

While this device addresses technical challenges, it also has societal implications. More precise data ensures safer electrical devices, reliable infrastructure and advanced healthcare equipment.

health-conscious readers can explore related updates on Human Health Issues, a platform covering innovative medical technologies, public health and scientific solutions.

Conclusion

The development of a quantum-based multifunctional device capable of measuring ampere, volt and ohm within one system is a groundbreaking achievement in modern science. By merging two delicate quantum systems into a single cryostat, scientists have achieved unprecedented precision, paving the way for new materials research and redefining electrical standards worldwide.

As laboratories, industries and healthcare providers adopt this technology, we may soon witness a new era of quantum-driven innovation, shaping the future of measurement science and beyond.

Source

Explore More Insights

for more on how technology and environment intersect with public health, visit Human Health Issues - covering wellness, medical research and health.

Stay updated with the latest in science, technology, AI and quantum research at FSNews365 - your hub for groundbreaking innovations and future-ready knowledge.

Learn more about the realities of climate change, sustainability and environmental challenges at Earth Day Harsh Reality - exploring the truth behind our planet's urgent issues.

Discover, learn and stay ahead with knowledge that matters today and for the future.

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