“It will allow us to minimize the NV center readout system and provide a single-shot readout of the NV center at room temperature.” In another project, they read the magnetic moment of a single electron in a carbon nanotube. This project will pave the way for a quantum imaging technique that probes the quantum nature of a system at the nanoscale. “BINA’s ensemble of prominent researchers makes up a vibrant environment in which to establish multidisciplinary connections and collaborations that are otherwise much harder to form,” says Dr. Hamo. “I also intend to be involved with BINA’s fabrication facilities and the imaging facilities, both as user and a contributor.” Dr. Assaf Hamo, who joined BINA in 2022, is an expert in quantum sensors imaging. In his PhD research at the Weizmann Institute of Science, he imaged, for the first time, the Wigner crystal of electrons in a carbon nanotube using a quantum dot sensor. In his postdoctoral research at Harvard University, he used a nitrogen vacancy in a diamond as a quantum magnetic sensor to image the inside current in a microscopic device and show the hydrodynamical behavior of the flow of electrons. Nitrogen vacancy (NV) centers in diamond and carbon nanotube devices are two promising platforms to advance quantum sensing. “The idea is to harness the peculiar properties of quantum mechanics, such as superposition and coherence, to sense physical quantities such as minute magnetic fields and electric fields that are impossible to sense using classical sensors,” says Dr. Hamo. “These two systems have proven, each in its own way, to be ultrasensitive. However, they are far from reaching their intrinsic capabilities, mainly due to their imperfect interface with the outer world.” In his lab, Dr. Hamo focuses on a hybrid system of a carbon nanotube device coupled to a single NV center. He says that combining these two unique sensors is a way to overcome many of the limitations of each system. In one research project, Dr. Hamo and his group read the quantum state of the NV center using a charge detector made of a carbon nanotube. Dr. Assaf Hamo “The idea is to harness the peculiar properties of quantum mechanics, such as superposition and coherence, to sense physical quantities such as minute magnetic fields and electric fields that are impossible to sense using classical sensors” 15
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