MicroCloud Hologram’s Quantum Identity Authentication

A Cayman Islands holding company has issued a statement saying it has developed two ‘practical’ quantum identity authentication schemes based on Grover’s quantum search algorithm. MicroCloud Hologram Inc (NASDAQ: HOLO) describes one scheme intended for environments with a trusted third party (TTP) and a second scheme designed to operate without a third party, for more decentralised applications  ¹.

What is Grover’s algorithm?

Grover’s algorithm can be explained as a quantum method for finding a particular item in a large, unsorted set more efficiently than a conventional computer. If a classical search might require checking many candidates one-by-one, Grover can (in ideal conditions) reduce the number of checks roughly from N to √N. It is not a ‘magic lookup’, but a speed-up for a specific type of search problem, namely finding a marked match inside an unstructured space.