Quantum Researchers Develop Method to Measure Photocurrents Flow in 2D with Implications for Quantum Sensors & Next-Generation Electronics

By IQT News posted 17 Jan 2020

(HPCWire) Quantum researchers at the University of Chicago have developed a new method to measure how photocurrents flow in a 2D material — a result that could have implications for developing quantum sensors and next-generation electronics.
By using quantum sensors to visualize the magnetic field in extremely thin molybdenum disulfide (MoS2) — a material just three atoms thick — researchers in David Awschalom’s group at the University of Chicago discovered just how photocurrents (electric currents induced by light) flowed in the material — in this case, surprisingly, in a vortex around the laser.
“The ability to observe electronic behavior that is invisible to traditional measurements opens new avenues for scientific study, and ultimately helps us design efficient quantum technologies,” said principal investigator David Awschalom, the Liew Family Professor in Molecular Engineering, senior scientist at Argonne National Laboratory, and director of the Chicago Quantum Exchange. “This sensitive measurement technique allows us to explore phenomena at the atomic scale and develop new devices for quantum sensing and communication.

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