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Home Science News Biology

Researchers Engineer Cells to Develop Biological Qubits in Pioneering Multidisciplinary Breakthrough

August 20, 2025
in Biology
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In a groundbreaking intersection of biology and quantum technology, researchers at the University of Chicago Pritzker School of Molecular Engineering have unveiled a new frontier: the development of protein-based quantum bits, or qubits. This pioneering work challenges longstanding assumptions that living systems, characterized by their warm, noisy, and dynamic environments, are inherently incompatible with the delicate, low-temperature requirements of conventional quantum devices. By harnessing the innate properties of biological molecules, the team has successfully transformed a fluorescent protein naturally found in cells into a functional quantum sensor. This innovation opens an extraordinary gateway to probing the quantum realm within living organisms, promising to revolutionize nanoscale imaging and biological inquiry.

The concept of a qubit is foundational to quantum technology. Unlike classical bits that encode information as binary 0s or 1s, qubits leverage quantum phenomena such as superposition and entanglement to represent information in multiple states simultaneously. Traditionally, qubits have been fabricated from engineered solid-state systems like diamond defects or superconducting circuits, necessitating extreme cryogenic cooling and isolation to prevent decoherence from environmental noise. This new approach flips the paradigm by embedding quantum sensitivity into molecules produced by cells themselves, made possible by the intrinsic quantum mechanical behavior of biological molecules.

At the heart of this breakthrough lies the sophisticated engineering of a fluorescent protein, a biomolecule extensively employed in cell biology for its capacity to illuminate and track cellular processes under fluorescence microscopy. The research group ingeniously reconfigured such a protein into a spin qubit, capable of quantum sensing—the detection of minute magnetic and electric fields at the atomic or molecular scale. Unlike traditional sensors, these protein qubits can be synthesized and positioned with atomic precision by cellular machinery, naturally integrating into biological environments. This capability is poised to dramatically enhance the resolution and sensitivity of nanoscale magnetic resonance imaging (MRI) within living tissue.

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The implications of this advancement are vast. Protein qubits can detect signals thousands of times stronger than those picked up by current quantum sensors, which are often limited in their ability to function within live and complex biological systems. They represent an innovative bridge between quantum physics and molecular biology, potentially enabling direct observation of quantum phenomena such as protein folding dynamics, enzyme catalysis, and biomolecular interactions at an unprecedented scale. This understanding could deeply inform medical science, offering early detection pathways for diseases at their quantum biochemical origins.

David Awschalom, co-principal investigator and Liew Family Professor of Molecular Engineering at UChicago PME, emphasized the novelty of the approach. Instead of retrofitting quantum devices to operate in biological contexts, the team cultivated a symbiotic strategy—utilizing biology’s own evolutionary toolkit to generate quantum sensors inherently suited for these environments. This paradigm shift harnesses natural self-assembly processes and evolutionary optimization, circumventing many of the traditional engineering challenges that have stymied quantum device integration within living matter.

The study, published in the prestigious journal Nature, further details the technical underpinnings of the protein qubit system. Unlike nanomaterial-based qubits, protein qubits owe their coherence and operational fidelity to molecular-level precision and genetic encoding. Cells can thus dictate the exact placement and environmental context of these quantum sensors, producing quantum materials with reproducibility and specificity impossible to achieve through conventional fabrication techniques. This atomic-scale control over qubit positioning is critical for advancing quantum-enabled bioimaging and sensing.

Peter Maurer, assistant professor of molecular engineering and co-principal investigator, highlighted the interdisciplinary synergy essential to this success. The convergence of quantum engineering, molecular biology, and computational modeling at UChicago PME created a fertile environment for innovation. This high-collaboration landscape was pivotal for addressing the complex challenges posed by integrating quantum coherence with biological molecular structures operating at physiological temperatures and in noisy environments.

While these nascent protein-based qubits have yet to outperform the sensitivity of the leading diamond-based quantum sensors, their ability to be genetically encoded directly within living systems heralds a transformative research direction. The real promise lies in their unprecedented potential for in vivo quantum sensing—measuring and manipulating biological quantum states within living cells and tissues, capturing transient quantum phenomena that have eluded conventional detection methods until now.

Benjamin Soloway, a quantum physics PhD candidate involved in the study, expressed excitement over the broader ramifications of this development. Current fluorescence microscopy techniques, while powerful for visualizing biological processes, lack direct quantum sensitivity and must infer molecular-scale activities indirectly. Protein qubits open the door to observing molecular dynamics and interactions quantum mechanically, affording unprecedented insight into cellular behavior and bio-molecular machinery, all without the invasiveness or limitations of traditional quantum hardware.

The journey to this discovery was neither swift nor straightforward. The research spanned several years, characterized by numerous technical challenges and uncertain outcomes. Co-first author Jacob Feder reflected on the persistence and resilience required, underscoring the critical role of perseverance in pushing through periods of discouragement. Such tenacity exemplifies the demanding nature of frontier scientific research where breakthroughs often emerge from iterative trial, error, and refinement.

Looking forward, the team anticipates rapid expansion of this protein qubit platform across various classes of fluorescent proteins and potentially other biological molecules. This modularity and adaptability suggest that quantum sensors can soon become widespread tools in molecular and cellular biology, enhancing imaging, diagnostics, and fundamental understanding of quantum effects in living systems. The approach marks a pivotal step toward bridging the microscopic quantum world and the macroscopic complexity of life itself.

As nature’s own architecture inspires a revolutionary pathway for quantum technology, this discovery resonates beyond biology, potentially influencing quantum materials science and engineering at large. By exploiting the quantum coherences embedded in biomolecules, scientists may unlock new families of quantum materials with enhanced functionality and integration, advancing quantum computing, sensing, and communication applications. The fusion of biology and quantum mechanics thus heralds a fertile domain for transformative science in the 21st century.


Subject of Research: Protein-based quantum bits (qubits) derived from fluorescent proteins enabling quantum sensing within living biological systems.

Article Title: A fluorescent-protein spin qubit

News Publication Date: 20-Aug-2025

Web References:
https://www.nature.com/articles/s41586-025-09417-w
https://pme.uchicago.edu/faculty/david-awschalom
https://chicagoquantum.org/

References:
Maurer, P., Awschalom, D., et al. “A fluorescent-protein spin qubit.” Nature (2025). DOI: 10.1038/s41586-025-09417-w

Image Credits: Jason Smith

Keywords: Quantum information, Quantum sensing, Protein qubits, Molecular biology, Fluorescent proteins, Quantum mechanics, Quantum materials, Nanoscale MRI, Cellular imaging, Quantum biology, Molecular engineering, Quantum technology

Tags: biological qubitsengineering living systems for quantum applicationsfluorescent proteins as quantum devicesfuture of quantum computinginnovative biotechnology applicationsinterdisciplinary research in quantum technologynanoscale imaging techniquesovercoming decoherence in qubitsprotein-based quantum bitsquantum mechanics and biologyquantum sensors in living organismsUniversity of Chicago Pritzker School
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