MIT Develops Quantum Sensor to Measure Multiple Properties Simultaneously

New technique uses entanglement to capture amplitude, frequency, and phase in a single reading.

Apr. 16, 2026 at 7:40am

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A highly structured abstract painting in soft, earthy tones depicting interlocking geometric shapes and concentric circles, representing the entanglement of quantum spins and the simultaneous measurement of multiple physical properties in a solid-state quantum sensor.MIT's new quantum sensor harnesses the power of entanglement to simultaneously measure multiple physical properties, unlocking new possibilities for the study of complex systems.Boston Today

Researchers at MIT have created a solid-state quantum sensor that can simultaneously measure multiple physical properties, overcoming a key limitation of existing quantum sensors. The system uses entanglement between two quantum bits to capture parameters like amplitude, frequency, and phase in a single measurement, enabling more precise and comprehensive analysis of complex systems in fields like materials science and biology.

Why it matters

Quantum sensors have immense potential to revolutionize fields from medicine to astronomy by detecting incredibly small signals. However, most current quantum sensors can only measure one property at a time, requiring repeated experiments that are time-consuming and prone to errors. This new approach from MIT allows quantum sensors to fully characterize systems in a single measurement, unlocking new applications in areas like condensed matter physics and cellular biology.

The details

The MIT team's quantum sensor uses nitrogen-vacancy (NV) centers in diamond, a common setup for solid-state quantum sensors that can operate at room temperature. By entangling the electronic spin of the NV center with the spin of a nearby nitrogen atom, the researchers were able to perform a 'Bell state measurement' that allowed them to simultaneously capture the amplitude, frequency, and phase of a microwave field. Previous experiments had only achieved this type of multiparameter estimation at extremely low temperatures, making the MIT team's room-temperature demonstration a significant advance towards practical quantum sensing.

  • The research was published on April 16, 2026.

The players

Takuya Isogawa

A graduate student in nuclear science and engineering at MIT and a co-lead author of the paper.

Guoqing Wang

A PhD '23 graduate from MIT and a co-lead author of the paper.

Boning Li

A PhD candidate at MIT and a co-lead author of the paper.

Paola Cappellaro

The Ford Professor of Engineering, a professor of nuclear science and engineering and of physics, and a member of the Research Laboratory of Electronics at MIT.

MIT

The Massachusetts Institute of Technology, where the research was conducted.

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What they’re saying

“Quantum multiparameter estimation has been mostly theoretical to date. There have been very few experiments that actually demonstrate it, and that work focused on photons. We wanted to demonstrate multiparameter estimation in a more application-oriented setup: a solid-state quantum sensor in use today.”

— Takuya Isogawa, Graduate student in nuclear science and engineering

“If you can only measure one quantity at a time, you have to repeat experiments to measure quantities one by one. That takes more time, which means less sensitivity. It also makes experiments more susceptible to errors.”

— Takuya Isogawa, Graduate student in nuclear science and engineering

“Measuring these parameters simultaneously can help us explore spin waves in materials, which is an important topic in condensed matter physics. NV center sensors have extremely high spatial resolution and versatility. It can measure a lot of different physical quantities.”

— Takuya Isogawa, Graduate student in nuclear science and engineering

What’s next

The researchers plan to explore if their approach can achieve higher precision for each measured parameter, as well as how it performs when characterizing heterogeneous materials where physical quantities vary across different locations.

The takeaway

This breakthrough from MIT represents a major step forward for practical quantum sensing, enabling solid-state sensors to simultaneously capture multiple properties of complex systems. This could unlock new applications in fields like materials science and biology by providing a more comprehensive and efficient way to study the behavior of atoms, electrons, and molecules.