Phase matching in quantum searching
Abstract
When arbitrary phase rotations are used instead of inversions in Grover's quantum algorithm, they must satisfy a matching condition. When phase matching is satisfied, the quantum search is an approximate rotation in 2dimensional space. An approximate formula for the amplitude is derived. A simple explanation is also given.
 Publication:

Physics Letters A
 Pub Date:
 October 1999
 DOI:
 10.1016/S03759601(99)006313
 arXiv:
 arXiv:quantph/9906020
 Bibcode:
 1999PhLA..262...27L
 Keywords:

 Quantum Physics
 EPrint:
 13 pages, 7 figures