量子计算机具有海量的计算能力，它的运算速度可能比奔腾4芯片快10亿倍，可以在一瞬间搜寻整个互联网信息。使用量子比特作为运算单位的量子计算机具有天然的并行计算能力。不同于一个经典比特只存在0或1两种状态，一个量子比特处于多个状态，不仅可以处于0、1两种状态，量子比特还可以处于0和1的叠加态。在强大的量子计算机面前，所有的虚拟货币采用的公开密钥加密算法就显得非常脆弱，随时可能被量子计算机“黑进去”。在量子计算机技术获得突破，攻克了温度以及精度缺陷后数字货币面临的威胁可想而知。如果无法在加密算法上进行改进，与之抗衡，是否加密货币就将走向终结？
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