Photonic logic

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Photonic logic is the use of photons (light) in logic gates (AND, NAND, OR, NOR, XOR, XNOR). Photonic logic refers to the usage of light (photons) to form logic gates. Switching is obtained using nonlinear optical effects when two or more signals are combined.

Resonators are especially useful in photonic logic, since they allow a build-up of energy from constructive interference, thus enhancing optical nonlinear effects.

Other approaches currently being investigated include photonic logic at a molecular level, using photoluminescent chemicals.

[edit] References

• Ibrahim TA, Amarnath K, Kuo LC, Grover R, Van V, Ho PT. Photonic logic NOR gate based on two symmetric microring resonators. Opt Lett. 2004 Dec 1;29(23):2779-81.
• Biancardo M et al. A potential and ion switched molecular photonic logic gate, Chem. Commun., 2005, (31), 3918-3920