提问 HN：量子计算值得投入吗？
1 分•作者: alexyan0431•大约 6 小时前
我是一名量子计算（QC）专业的博士生，最近有点沮丧。过去几年，我听到了很多关于我们领域发展的鼓舞人心的消息，这正是我选择攻读这个领域博士学位的原因。<p>但当我越接近前沿，我发现的事实越令人沮丧。量子比特非常脆弱，即使维持一天也很困难，而且数量受到各种因素的限制。成本巨大，设备非常敏感，甚至能感受到室温下的气流。更不用说，量子算法几乎没有发现有用的应用。美好的愿景似乎变成了一个泡沫，随时可能破灭。<p>这让我对未来感到迷茫：我是否应该坚持这个领域？如果不是，我又能去哪里呢？我最熟悉的是量子力学，但它对几乎所有其他领域都毫无用处。<p>绝望...
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I am a phd student in quantum computing(QC), and recently I am a little depressed. Over the past few years I have heard a lot of inspiring news about the development of our field, which is exactly the reason that I chose to persue a doctoral degree in this filed.<p>But as I got closer to the frontline, I found more frustrating facts. The qubits are fragile, hard to maintain even for a single day, and the number are limited by all kinds of factors. The cost is huge, the devices are sensitive enough to feel the draft of room temperature. Not to mention there are few useful applications discovered for quantum algorithms. The beautiful visions seem to become a bubble, and it could burst at any time.<p>That makes me feel lost about the future: whether I should stick on this field? If not, where can I go? The most familiar things to me is quantum mechanics, and it's useless for almost every other fields.<p>Desperate...