BAR-ILAN INSTITUTE OF NANOTECHNOLOGY & ADVANCED MATERIALS | 2019 ANNUAL REPORT

The construction of a quantum computer presents a major scientific and technological challenge due to the extreme fragility of quantum information. An efficient quantum processor should have a scalable register of quantum bits (qubits) that is easy to initialize, readout and manipulate but at the same time is well protected from its environment in order to avoid decoherence and loss of information. Today, quantumcomputersaredivided into twocategories: in thefirst category, there are qubits that can properly store quantum information but are difficult to control and implement. In the second category, there are systems that can be easily controlled and implemented but cannot store quantum information for a long enough period of time. “In my lab, we are trying to solve these problems by building a hybrid quantum technology that will be both reliable and scalable. In other words, a hybrid quantum technology enables quantum information to be easily handled and stored at the same time,” explains Dr. Stern. “We are trying to achieve this by combining existing technologies, such as superconducting circuits and semiconductor spins. Superconducting circuits are easy to interface but have rather poor coherence times. Conversely, semiconductor spins are stable qubits but cannot be easily interfaced, and a standalone qubit is about as useful as a standalone telephone. Combining HYBRID SYSTEM – HYBRID EXPERTISE Just as the invention of the transistor fundamentally transformed society, quantum computers have the SRWHQWLDO WR VLJQLȴFDQWO\ LPSDFW QXPHURXV DVSHFWV RI RXU lives, including everything from security needs and internet technology to healthcare and medicine 16