All articles tagged with #neutral atoms
Scientists at Caltech have set a new record by synchronizing 6,100 neutral atom qubits in a quantum array that operates at room temperature, with extended superposition coherence of 12.6 seconds, marking a significant step toward scalable, fault-tolerant quantum computers capable of surpassing classical supercomputers.
The cosmic dark ages were a period in the early Universe when neutral atoms formed and photons stopped scattering off of free electrons. This marked the time when radiation began to travel in a straight line. The temperature of the photon bath during this period was around 2970.8 K. Overdense regions, with more matter, had stronger gravity and emitted colder photons, while underdense regions emitted hotter photons. Gravity and radiation pressure played crucial roles in the growth of matter clumps, but it took around 50 to 100 million years for the first star to form. The formation of neutral atoms and the subsequent emission of 21 cm light from hydrogen atoms were important milestones before the formation of stars.
Researchers have demonstrated a quantum-enabled millimeter wave to optical transduction using neutral atoms, which could enable the creation of a quantum internet. The technique involves using a high-Q millimeter wave cavity to couple the millimeter wave and optical fields to a cloud of neutral atoms. The atoms then convert the millimeter wave to an optical signal, which can be transmitted over long distances using optical fibers. This approach could be used in hybrid quantum systems to enable quantum communication between different types of quantum devices.