Quantum computers require strict conditions to maintain coherence and prevent decoherence from "summary" of Quantum Supremacy by Michio Kaku
To build a functional quantum computer, one must be vigilant in maintaining the delicate quantum states of qubits. The most crucial challenge is to preserve coherence while preventing decoherence. This requires creating an environment where qubits are shielded from any outside interference that could disrupt their quantum states. Consequently, quantum computers must operate under strict conditions to ensure the stability of qubits. Any disturbance or fluctuation in the environment can lead to decoherence, causing the quantum system to lose its quantum properties. To maintain coherence, quantum computers are typically kept at extremely low temperatures, near absolute zero. This minimizes thermal vibrations that could cause qubits to lose their quantum states. Additionally, quantum computers are shielded from electromagnetic radiation and other sources of noise that could introduce errors into the quantum calculations. Furthermore, qubits are isolated from each other to prevent unwanted interactions that could lead to decoherence.- The key to building a functioning quantum computer lies in creating a controlled environment that allows qubits to maintain their quantum states. This involves minimizing external disturbances, such as temperature fluctuations and electromagnetic radiation, that could disrupt the delicate quantum coherence. By carefully managing these conditions, researchers can prevent decoherence and harness the power of quantum computing to solve complex problems that are beyond the capabilities of classical computers.
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