Universal Control of Decoupled Quantum Systems
Abstract
We show that if one can perform a restricted set of fast manipulations on a quantum system, one can implement a large class of dynamical evolutions by effectively removing or introducing selected Hamiltonians. The procedure can be used to achieve universal noise-tolerant control based on purely unitary open-loop transformations of the dynamics. As a result, it is in principle possible to perform noise-protected universal quantum computation using no extra space resources.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 1999
- DOI:
- 10.1103/PhysRevLett.83.4888
- arXiv:
- arXiv:quant-ph/9906094
- Bibcode:
- 1999PhRvL..83.4888V
- Keywords:
-
- Quantum Physics
- E-Print:
- 4 pages, no figures