Unraveling Quantum Secrets: Physicists Bridge Two Quantum Worlds

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The research is part of an ongoing effort by Si, who won a prestigious Vannevar Bush Faculty Fellowship from the Defense Department in July to pursue the validation of a theoretical framework for controlling topological states of matter.In the study, Si and Hu showed that electrons from d atomic orbitals could become part of larger, molecular orbitals that are shared by several atoms in the lattice.

“This dirt road lies so far from the highway,” he said. “The influence from the highway is very small, which translates to a minute energy scale and very low-temperature physics. This means you need to go to temperatures around 10 Kelvin or so to even see the effects of coupling. “Even when it has faded into a dirt road, it still shares status with the other lanes, because they all came from the d orbital,” Si said. “It is effectively a dirt road, but it is much more strongly coupled, and that translates to physics at much higher temperatures.

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