Quantum optical Fredkin gate
Abstract
A simple optical model to realize a reversible, potentially error-free logic gate-a Fredkin gate-is discussed. The device dissipates no energy and makes use of the Kerr nonlinearity to produce intensity-dependent phase shifts. The analysis shows that quantum mechanics permits the operation of error-free logic gates which dissipate no energy. However, even though the device is nondissipative, error-free performance only occurs under particular operating conditions.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 1989
- DOI:
- 10.1103/PhysRevLett.62.2124
- Bibcode:
- 1989PhRvL..62.2124M
- Keywords:
-
- Logic Circuits;
- Quantum Mechanics;
- Quantum Optics;
- Energy Dissipation;
- Kerr Electrooptical Effect;
- Mach-Zehnder Interferometers;
- Phase Shift;
- Refractivity;
- Optics;
- 42.80.Vc;
- 42.50.Bs;
- 89.70.+c;
- Information theory and communication theory