Phys.org June 26, 2024 Single electrons trapped on solid-neon surfaces, which have long coherence times, are promising platform for charge qubits. The actual quantum states of the trapped electrons have not been understood. A team of researchers in the USA (National High Magnetic Field Laboratory (Florida), Florida State University, University of Florida, FAMU-FSU College of Engineering) examined the electron’s interactions with neon surface topography and by evaluating the surface charges induced by the electron, they demonstrated its strong perpendicular binding to the neon surface. They revealed that surface bumps could bind an electron, forming unique quantum ring states that aligned […]
Tag Archives: Charge noise
New quantum computing architecture achieves electron charge qubit with 0.1 millisecond coherence time
Phys.org October 26, 2023 Electron charge qubits built on conventional semiconductors and superconductors suffer from severe charge noise that limits their coherence time to the order of one microsecond. A team of researchers in the US (Argonne National Laboratory, University of Chicago, Lawrence Berkeley National Laboratory, NSF Institute… MA, MIT, Northeastern University, Stanford University, University of Notre Dame) reported electron charge qubits exceeding the charge noise limit, based on isolated single electrons trapped on an ultraclean solid neon surface in a vacuum. Quantum information was encoded in the motional states of an electron that was strongly coupled with microwave photons […]