|
|
|
 |
Quantum Optical Realization of Quantum Information Processing
Quantum Information Processing involves computing and communication at the quantum level. Quantum computing is a major new development in physics, enabling us (if a quantum computer is realizable) to attack problems previously thought to be too complex for normal computation in a reasonable time. Examples of quantum algorithms involving this kind of advantage are Shor's for fast factorization (in itself a threat to secure communication) and Grover's for data base searching. I will discuss the ways quantum mechanics allow such a speed-up, and how quantum gates, networks and processors may be implemented in a realistically noisy environment. Simple demonstrators have already been built. I will discuss realizations of processors concentrating on atomic and optical approaches as those offering the best resistance to noise. Finally, quantum local area networks linked by quantum communication protocols will be described. |
||
|
|