After Silicon Valley Bank’s fall, new digital-first banks like Erebor are reshaping U.S. finance with smarter, faster solutions for start-ups.

The FTSE 100 index slumped 151.41 points, 1.6%, at 9,284.65. The FTSE 250 dropped 306.86 points lower, 1.4%, at 21,684.50 while the AIM All-Share gave back 8.73 points, 1.1%, to 781.16.

Quantum technology can process an enormous amount of data and solve complex problems in seconds rather than decades. Remarkably, quantum technology first appeared in the early 1900s. It originated ...