Researchers Move Macro-Scale Diamond via Quantum Spin
The study confirms quantum control at a mass eight orders of magnitude larger than previous spin-mechanical experiments.
Updated on Oct. 15, 2026 in Physics
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Researchers at the Okinawa Institute of Science and Technology have demonstrated quantum-controlled movement in a one-centimeter diamond. Published in Science Advances on October 15, 2026, the study details how the team used magnetic manipulation of internal nitrogen-vacancy centers to displace a 128-milligram object.
Why it matters
This research seeks to observe quantum mechanical effects in macro-scale objects to test the quantum nature of gravity. By scaling quantum control to heavier masses, the work pushes the boundaries of where quantum physics transitions into the regime of Einstein's general relativity.
The researchers achieved a 100-nanometer displacement in a 1-centimeter, 128-milligram diamond. This mass is eight to nine orders of magnitude greater than that of objects in prior spin-mechanical studies.
The players
Okinawa Institute of Science and Technology
A graduate university focusing on interdisciplinary research in science and technology, including quantum systems.
The details
The team utilized diamagnetic levitation to suspend the centimeter-wide diamond in a stable field. They then manipulated nitrogen-vacancy centers—atomic-scale impurities within the diamond crystal lattice—using lasers and microwave techniques to precisely control the object's motion. This spin-mechanical coupling allowed the researchers to track movement in response to external magnetic fields.
Timeline
October 15, 2026: The study was published.
The Tech Race
This study advances the ongoing experimental search for the quantum nature of gravity by pushing quantum control into the macro-scale regime. It marks a significant jump in mass compared to prior spin-mechanical experiments, setting the stage for future tests of superposition in large objects.
This research provides a fundamental experimental platform for developing highly precise sensors using macro-scale quantum control. It remains in the research stage, with future applications dependent on the team achieving quantum superposition at larger mass scales.
The takeaway
The team plans to refine experimental conditions to reach the regime of Einstein's general relativity and eventually observe macroscopic quantum superposition. Future milestones hinge on achieving one additional order of magnitude in precision to reach the threshold for detecting quantum behavior in a macro-scale system.
Further reading
Explore more developments in the Physics section.
Source note: This article includes information reported by IFLScience.
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