物理与天文2021arxiv.org
超导量子比特与缓步动物之间的纠缠
Entanglement between superconducting qubits and a tardigrade
进阶 · 约 45 分钟读完前置知识:超导量子比特基础、量子纠缠、缓步动物隐生
导读
这篇论文声称将一只水熊虫(缓步动物)的隐生态个体放置在超导 transmon 量子比特上,通过共振频率偏移观察到量子比特与水熊虫的耦合,并将这一联合系统与第二个量子比特实现了纠缠。作者称这创造了复杂生命在极端条件下存活的纪录,并探讨了量子物理、化学与生物学的交叉。
HN 关注点:把活体生物与超导量子比特纠缠听起来像科幻,HN 读者在争论这究竟是严肃的量子生物学突破还是噱头/恶搞。
HN 评论精选
这几条评论里:质疑 3 补充 1
质疑版主呼吁停止玩梗,并质疑该研究是否为恶搞而将其降权
请大家别发那些浅显的段子评论。这篇报道要么确实有趣且重要(似乎是这样?我不太确定),要么就不该上 HN 首页。无论如何,讨论区不该被浅薄的互联网回流灌满。仅凭这一点就很有意义:'创造了复杂生命可存活条件的新纪录'。编辑:在获得更多信息之前,我先将其降权,视作某种恶搞。
dang查看英文原文
All: could you please not post dumb, obvious comments about this? Either the story is interesting and significant [1] or it shouldn't be on HN's front page. Either way, the thread shouldn't fill up with shallow internet reflux. I get that the novelty of this story is activating, but we're trying for something different here. https://news.ycombinator.com/newsguidelines.html [1] which does seem to be the case? I can't really tell. But this alone is significant: "setting a new record for the conditions that a complex form of life can survive" Edit: I'm downweighting this as some sort of parody, barring more information.
补充感叹水熊虫展现的生命韧性
不知道该说什么,我无言以对。我们都喜欢水熊虫,但这是对生命韧性的一次相当惊人的证明。如果说有什么东西能殖民宇宙,那就是这些家伙。
billiam查看英文原文
Don't know what to say, I'm speechless. We all love us some tardigrades, but this is quite a statement about the resilience of life. If anything from here can colonize the universe, it's these guys.
质疑惊讶于论文内容的离奇,质疑研究目的
我不太确定他们想达成什么,但我从没想过会在一篇量子物理论文里读到这样的句子:'我们将水熊虫的隐生态个体放置在超导 transmon 量子比特上,并通过新量子比特-水熊虫系统共振频率的偏移观察到二者之间的耦合。随后这个联合系统与第二个超导量子比特实现了纠缠。'
6177c40f查看英文原文
I'm not really sure what they're trying to accomplish here, but I never thought I'd read a quantum physics-related paper with the sentences: "We place a tardigrade tun on a superconducting transmon qubit and observe coupling between the qubit and the tardigrade tun via a shift in the resonance frequency of the new qubit-tardigrade system. This joint qubit-tardigrade system is then entangled with a second superconducting qubit."
质疑质疑'活着'的定义:处于 mK 温度的水熊虫更像是冻结可复活而非存活
论文称他们不仅通过将生命系统与两个超导量子比特纠缠而超越了玻尔的互补性原理,还指出所研究的缓步动物在环境极端恶劣时可以无限期暂停生命活动——因此可以对一个系统做量子乃至化学研究,而不破坏其生物学功能。我认为它在毫开尔文温度下并不算'活着',而是被冻结/死亡但可复活(就像最近那些坠入冰冻河流数小时后被成功复苏的孩子)。生命真是奇妙。
mensetmanusman查看英文原文
“ Here we not only go beyond Bohr’s complementarity by entangling a living system to two superconducting quantum bits, but we also expose an additional twist in areas where quantum physics, chemistry and biology all overlap. Namely, the living system we study is a tardigrade which is capable of suspending its living functions for an indefinite amount of time if the external conditions are deemed to be adverse enough for survival [2]. In that sense, and this is a point that Bohr certainly missed, it is possible to do a quantum and hence a chemical study of a system, without destroying its ability to function biologically.” I would argue that it isn’t living when it’s at mK temperatures, but that it is frozen/dead but revivable (like the children who have fallen recently off of bridges in to frozen rivers and been revived hours later). Life is amazing.
历次讨论
- 2021Hacker News 讨论帖152 分 · 114 评
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