Quantum computing also offers the means of making our communications and business transactions far more secure than they are today. Quantum cryptography exploits several remarkable effects of “quantum entanglement.” One is the ability to generate pairs of utterly unique and unbreakable keys. Basically, two random but identical particle keys can be created using entanglement. Since reading a quantum particle alters it, any effort to eavesdrop on communication is detected and that communication is either disrupted or ended.
Using this technology, we can create completely secure communications networks. Recently, Toshiba’s R&D labs announced the successful testing of quantum cryptography over fiber-optic networks. Austrians were able to send entangled photons between two Spanish islands nearly 90 miles apart.
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