Why is controlling individual ions so important for quantum computing?
Quantum computing hinges on the ability to reliably control and manipulate quantum bits, or qubits. Individual trapped ions serve as excellent qubits because they are identical, well-isolated, and their quantum states can be precisely controlled using lasers. The challenge is to perform operations – the logic gates – on these qubits without disturbing their delicate quantum states. My group's work focused on developing the experimental techniques, like quantum logic operations, to entangle and manipulate these ions in a controlled manner. We need to do the experiment to demonstrate that these operations are accurate and reliable, which is the real test for practical quantum information processing.
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