视 频

Quantum Computers——诺贝尔物理学奖获得者David·Wineland

图 文

So now let me talk about a little bit about Schroedinger's cat, Schroedinger is one of the inventors of quantum mechanics, his version was called wave mechanics. Now we are going to see the wave interference of Schroedinger, and you know, one of the consequences if you follow Schroedinger's theory. Assume everything works perfectly, then in principle you could make very large superposition state, and Schroedinger thought that there was something wrong with this, there was something wrong with quantum mechanics if you could do this. And the way he expressed his concern and his dissatisfaction with his theory, then what he cooked up was so you have a box that's sealed from any outside interference. But inside the box you have a single radioactive particle over here and then a cat, so the example he cooked up is if the radioactive particle decays, it'll release, it has a mechanism that releases poison and kills the cat. Now in principle we could write down the quantum mechanical equations to describe it, too complicated to really do in practice, here the Schroedinger's equation. The thing that he told us is that after 1 half-life of this radioactive particle, after one half life, you know, the particle has a 50% chance of decay, then all quantum mechanics tells us is that the cat is either dead or alive. It's in a superposition where radioactive particles is not decayed , the cat is alive and simultaneously the particle is decayed and the cat is dead and as I said the main reason he cooked up this example was that in principle quantum mechanics could scale to our large-scale or macroscopic world that we live in. Anyway this is the one... you know, he was concerned by this for his whole career.

现在我讲一下薛定谔的猫。薛定谔是量子力学的发明者之一，他的版本被称作波动力学。我们现在来看一下薛定谔波动力学的干涉，根据薛定谔的理论，会得到这样一个结果，假设（理论）一切完美，那么原则上可以制作一个非常大的叠加态，而薛定谔认为如果可以这样的话，量子力学就有些不对的地方，他为了表示自己对理论的担忧和不满提出一个理论，原则上可以写出这样一种状态的量子力学方程，然后他假设，有一个跟外界干涉隔离的箱子被封起来，箱子里面这个地方有一个放射性粒子，还有一只猫。他虚构的例子是，如果放射性粒子衰变存在这样一个机械装备可以释放毒剂杀死猫，原则上我们可以写下量子力学方程来描述它。真的写起来也很麻烦，这是薛定谔写的方程，他说经过放射性粒子的半衰期后，粒子有50%的概率会衰变。量子力学告诉我们的是，猫处在活或者死的状态，这是一种叠加态，同时处在放射性粒子没有衰变且猫活，和粒子衰变且猫死的叠加态。我刚才说过，他虚构这个例子的原因是原则上量子力学可以延伸到大尺度，或者说我们生活的宏观世界。他整个职业生涯都非常关心这件事。

Anyway in fact after many years after he invented wave mechanics in the early 50s, some of these ideas how a system would scale came from people like Einstein and Schrodinger and Heisenberg sitting around thinking of the consequences of quantum mechanics, and Schroedinger's Cat was one of them, but anyway so Schroedinger was bothered by this in his whole caree. He says, well we never, we never experiment with just one electron or atom or small molecule, which is how they first thought about this simple experiment, in thought experiments, in German it's gedanken experiments, we sometimes assumed we do, but this invariably is with ridiculous consequences meaning this cat. But now these thought experiments for us physicists are now our world. We can't make anything as large as a cat, but we can actually realize all the basic ideas. There's no magic here, you know, it turns out we need precise control of the system, just some... we need isolation from the outside environment. The couple of examples I am interested in (are) atomic clocks and quantum computers, I'm only gonna talk about quantum computers in this lecture, but there are many people now thinking about this around the world, there is are hundreds of groups working on these ideas.

而实际上，直到50年代，他发明波动力学很多年后，关于系统如何延伸的想法，来自于像爱因斯坦、薛定谔和海森堡这样的人坐下来思考量子力学的结果，薛定谔的猫是其中一个例子，反正薛定谔在他的整个职业生涯都为这个问题所困。他说，“我们从没用单个电子、原子或者小分子做实验”。他们这就是这样，刚开始的时候思考小实验，在"思想实验"中，德语叫"Gedanken Experiment"，“我们有时候假设这样做，“但是这样总是不可避免一些荒谬的结果”，也就是这只猫。现在这些思想实验对我们物理学家来说就是我们的世界，我们做不出像猫一样大的物件，但是实际上可以实现所有这些基本的想法，里面没有魔法，结果显示我们需要的是对系统的精密控制.....需要跟外界环境隔离开。我觉得有意思的这两个例子就是原子钟和量子计算机，我这次只讲一下量子计算机，其实全世界还有很多人都在思考这个问题，有几百个小组在做这样的实验研究。

I'm going to give you an idea how we do our manipulation on our quantum bits. This is a picture of my colleague in the NIST experiment, in this experiment here a quantum bit is base on 2 atomic levels separated by an optical frequency or corresponding transition wavelength, it's given by ultraviolet wavelength, and this is some atomic physics notation, you don't need to worry about that, but I've labeled these by arrows, where the lower state we call that spin down state and the upper state is spin up state where the arrow points upside. Anyway in these experiments, as I said, in the simplest version, we have a single ion in our ion trap, this's called RF trap after Wolfgang Paul who invented the trap. Anyway it creates a three-dimensional analog of our marble in a bowl, you can think this device as we display that.

我来告诉大家是如何对量子比特进行操控的。这是我在NIST（国家标准与技术研究所）的实验上的一个同事，这个实验的量子比特是基于两个能级差为光频的原子能级，对应的波长在紫外波段，这是写原子物理的记号，不用太担心，我用箭头标记它们，能级低的态叫做“自旋向下”态，能级较高的态是箭头指向上的态。反正这样的实验中，最简单的版本就是离子阱里面的单个离子，这是以发明者Wolfgang Paul命名的射频势阱，保罗阱产生一个跟弹球在碗里类似的三维势阱，可以把这个设备想象成这里表示的一样。

So how do we how do we make these superposition states? we can start the atom in what we call spin down state, the lowest energy state, and we can apply this laser here for certain amount of time and if we leave it on for certain amount of time, the state will evolve from the ground state to the superposition state, which I have labeled here.

那么我们如何制作叠加态呢？我们可以把原子制备在“自旋向下”的态，也就是能量最低的态，然后打一段时间的激光，让激光开一定的时长，然后原子内态就从基态演化成叠加态，我把它标记在这里了。

It turns out that in this experiment we also have another transition we can make in the atoms, from this ground state to some higher excited state, I should have said previously. This state here it lasts very long time, it only last tens of seconds, maybe you think that's pretty short, but it's much longer than the length duration of all these experiments we do, so you can think about it lasting forever. Anyway the way we can measure this state is, we do two things. One is we use another transition and illuminate them, this one it decays very quickly, 2 nanosecond, so that means if the atom starts at this excited state then it decays very rapidly. So it means we can scatter a fair amount of light off this ion, so I'll show you the picture where scattering light, we take some of them with a detector photomultiplier tool.

这个实验中原子还有另外一个跃迁可以利用，从基态到这个更高能量的激发态。这一个态可以维持很长时间，虽然只有几十秒，可能大家觉得很短，但是相对于实验中的周期来讲要长的多，所以基本可以认为实验过程中原子一直呆在这个态上。测量这个态要做两件事，一是利用另外一个跃迁的光打在原子上，这个激发态会很快衰变，寿命只有2纳秒，也就是说如果原子在这个激发态上就会很快的衰变，我们就可以从离子散射出相当多的光，我待会儿给大家看一张散射光的照片，我们也用光电倍增管探测散射光。

In fact we can make pictures of this, this is a picture of a single atom inside one of our ion traps, actually interestingly this transition wavelength here is also in ultraviolet. But there're certain ions, they fluoresce the visible spectrum, like Barium ion, will scatter light in the blue part of the spectrum, and actually in the labs where they work on barium ions you can literally see a single atom with your eye use that small magnifier. It's just amazing that you can actually see a single atom with just a small magnifier, it looks like kind of thin star.

实际上可以对离子拍照，这是离子阱中单个离子的一张照片。有意思的是这个跃迁的波长也是紫外光，但是也有一些离子，它们会发出可见光，比如钡离子就会散射蓝光，实际上在钡离子实验室你真的可以用肉眼加一个小的放大镜就可以看到单个粒子，用一个小放大镜就可以看到单个原子真的是让人非常惊奇，看起来就有点像小星星。

Anyway so how... one reason this transition is interesting is that. I won't have time to describe it, we can actually use it to cool the atoms down, the idea here is that when the atom scatters light, they feel though radiation pressure, the momentum from the photons that are scattered, and that causes a force on the atoms. We can arrange things so that the atoms only absorb the radiation or scatters the radiation when it when it's moving against the laser beam, so that will slow it down. For example, we can in many of our experiments, the experiments at room temperature 300 Kelvin, and with this idea of laser cooling we can cool the atoms down from 300 Kelvin to about 1 mK, but I'm not going to talk anymore about that.

这个跃迁还有一点很有意思，我没有时间细说，但它可以用来冷却原子，其中的原理是当原子散射光时，他们感受到光辐射压力，来自被散射光子的动量，这就形成对原子的作用力。我们可以通过实验条件让原子只吸收或者散射传播方向与原子运动方向相反的激光，来让原子慢下来，比如我们可以在实验中，300K的室温条件下，通过激光冷却原子的方法将原子从300K冷却到1毫K，但更多的细节我就不讲了。

Anyway. but we can also use this particular transition to measure the state of the atom. So let's suppose we made this superposition state, when we turn on this laser here, if this atoms, we say projected, this is the measurement. If it's projected to its upper state, then there is nothing scattered off from here so we don't see any detected light, on the other hand if the atom after projection, it jumps too quickly. After the projectionist if they...sorry I guess a few graphs are apparently left out.

而且我们也可以用这个跃迁测量原子的态，假设制备了这个叠加态，当我们打开这束激光，进行测量，也就是的“投影”。如果原子被投射到上能级，那么就不会有散射，我们探测不到光，另一方面，如果原子在投影后，（PPT跳的太快了......）抱歉几张图很明显漏掉了。

Anyway the idea is that if the atom is... remains... rather is projected in this state you see no fluorescence. If it's projected in this state then we see fluorescence, and the nice thing about that was is we can look at this fluorescence, the scattered light, we can detect in our detector. If the atom is measured, we say projected into this lower energy state we see light, if it's projected in the upper state we don't see any light, or there's a little background scattered light. But the nice thing is that we can draw, we can make a discriminator to distinguish the light from when it's fluorescing versus when it's not fluorescing, you know by drawing a threshold there. So that we can tell with 100% efficiency which stays up there, so there's also something else we want to do in this.

反正如果原子被投射到这个态，就看不到荧光，如果被投射到这个态上我们就可以看到荧光，这样我们就可以通过荧光、散射的光，用探测器进行探测，如果原子被测量到，也就是投影到，这个低能级态，我们可以看到光，如果被投影到较高能级的态，就看不到光，或者只有很弱的背景散射光。还有一点比较好，我们可以设一个阈值，来区分有没有荧光，这样可以达到100%的探测效率，我们还可以在这个实验条件下做些其他的事情。

I've talked about this classical picture of the atom in our bowl rolling back and forth like a marble，but in fact you know this atomic marble is also a quantum system. We know from quantum mechanics the energy states of the atomic marble are actually, are in discrete energy levels that's why I represent it here. These m's identify what motion states the atom is, and anyway we are going to need this for simple quantum computer that we've been playing. Now what we want to do, it will turn out that we want to be able to cool this quantized motional oscillator, down to the very lowest energy of state, we call that the ground state of motion, and the way we do that is actually pretty simple.

我说过一个经典图像，原子想弹球一样在碗里滚来滚去，但实际上这个原子“弹球”也是一个量子系统。量子力学告诉我们原子“弹球”的能级，其实是离散的能级，像这里表示的一样。这些m给出原子所在的运动态，在刚才讨论的简单的量子计算机中我们需要这些能级，现在们需要的是把这个量子化的谐振子冷却下来，到最低的动能能量态，也就是我们说的运动基态，冷却的方法其实非常简单。

we can turn on the laser to drive the transition where it take the atom from the lower energy state to the upper one, which are called spin down and spin up, we can also, when we drive this transition, we can get it to reduce the motion energy level by one quantum, and then it turns out for the conditions we can realize in this experiment. When the atom decays when it scatters light, it will do so without changing the motional energy level, and basically all we need to do is to leave this laser on for a while. Then we keep the atoms keep exciting the upper state by reducing the quantum number by one, and eventually it will decay down to the ground state. That's the way we prepare the lowest energy state of motion.

可以用激光驱动原子跃迁，这样激光就会使原子从较低的能态到较高的能态，也就是从“自旋向下”态到“自旋向上”态，驱动原子跃迁时也可以使原子的动能减少一个能级差的能量，结果就是，在实验中我们可以实现这样一种条件。当原子衰变散射光子时，原子可以冷却而动能能级不改变，基本上需要做的就是让激光开一会儿，然后让原子持续激发到较高的能态并减少一个量子数的能级，最终原子就会衰减到基态，这就是制备动能最低能态的方法。

Anyway I told you already a little bit about Peter Shor, a little bit history was that Artur Ekert who is at the meeting here in Hefei that we were all at. He came to Atomic Physics Conference that I help to organize at Boulder, Colorado in 1994, and he had learned about this idea of Peter Shor, he told us atomic physicists about it. Anyway there were two guys there two well-known theorists, Ignacio Cirac and Peter Zoller who were at this talk, and Peter Zoller is one of the people giving talk in Shanghai. They are very good theorists but they also knew how our experiment work, so they fairly quickly came up on an idea how we might be able to make simple quantum computer. So the idea was the following:

我刚才已经讲过一点Peter Shor了，还要说一下Artur Ekert的故事，他也参加了这次在合肥的会议。他1994年的时候到从罗拉多的Boulder参加我帮忙组织的原子物理会议，他那时候已经知道Peter Shor的算法了，并且告诉了原子物理学家们。当时在听报告的还有两个著名的理论物理学家，Ignacio Cirac和Peter Zoller，Peter Zoller现在也在上海，也会做一个报告，他们是非常优秀的理论物理学家，但同时也知道实验是如何进行的，所以他们相当迅速地提出一个理论，可能可以实现量子计算机，理论思想是下面这样的：

in this trap, you know, analogy to our bowl it's a little different here, but it's still 3-dimensional harmonic trap. In this one we make a binding in this horizontal direction, apparently we compared the binding in the other directions, so if we put these charged atoms, our atomic ions, into this 3-dimensional bowl, and we cool them down using this laser cooler. Then they all wanna fall to the bottom this bowl, which in this directions it has kind of minimum like that, but on the other hand, the Coulomb repulsion, because all the atoms are charged, hold them apart into our regular array. That's interesting because we can address these different ions with focusing laser beams, so some senses, like this situation in this case, it's just five quantum bits made of ions, it looks like kind of 5-atoms molecules, a pseudomolecule, and it has vibration modes just like a normal molecule. It turns out they all have different frequencies, because they all have different frequencies we can isolate one of the modes of vibration, and the simplest one to think about is where the five ions are oscillating all, they roll their positions, they are oscillating back and forth in the potential well provided by our ion trap, along that direction. So their idea how we could make a quantum computer computer is that you would first using use this cooling to the ground state as I just described before for one atom, we will first put all the motional modes in the ground state of motion, then the second part of their scheme is that in general, say, each string on a quantum computation, each one of the ions is going to be in the superposition state of their internal states.

这个势阱跟我们的“碗”模型类似，有一点不同，但仍然是三维的谐振势阱。这个势阱里，我们把水平方向也考虑进来，这里很显然是相较其他两个方向，所以如果把这些带电的电子，也就是离子放进三维的“碗”中，然后用激光冷却下来。那么他们都想落到碗的底部，在这个方向会有这样一种最小能量点，但另一方面由于原子带电，库伦排斥力会将它们分开排成规则的队列。这很有意思，因为这样我们可以控制聚焦的激光跟不同的离子作用，某种意义上这里这个例子中，就是离子组成的5个量子比特，看起来就是5个原子组成的“分子”，或者一个“赝分子”，跟通常的分子一样，它也有震动模式。结果证明，他们各自都有不同的频率，因为他们的频率不同所以我们可以隔离出其中一个震动模式（来进行操作）。首先最容易想到的模式就是5个离子在势阱中沿着这个方向，来回滚动位置的模式，所以他们两人提出制作量子计算机的方法就是像我刚才说的那样，首先用激光冷却原子到基态，我们首先要把所有离子的运动状态制备到基态，然后他们的方案中第二步是，大体来讲，做量子计算的每个离子链上的每个离子都在它们的内态的叠加态上。

And so their idea was to, if you could somehow map that superposition of state of this ion, (and) transfer it into the first excited state of motion, then you basically transfer the qubit from this ion into the motion qubit. And the fact that the motion is shared amongst all the ions, then the next part of their proposal is that if you could somehow make a logic gate between the motion qubit and the, say, the second ion over here, then basically you've done a logic gate between this first ion and the second ion through the mapping classes. and I'm already running wrong.

然后他们的想法是，如果可以把离子内态的叠加态通过某种方式映射到运动的第一激发态，那么基本就可以把离子的内态量子比特转化成运动状态的量子比特，而事实上运动的量子态在离子之间是共有的。然后他们提出，如果可以以某种方式对运动状态的量子比特做逻辑门操作，比如这里的第二个离子，那么基本上也就通过这种映射完成了第一个和第二个离子之间的逻辑门操作。我讲的有点跑题了。

so I won't have time actually to show you the detail there, nevertheless we can do this mapping and realize a quantum gate... doing this. Actually when I was at NIST, they had a paper to describe this idea, we turned out to be at the right place, my colleague at NIST at that time, Chris Monroe, they described at their work where we can do this logic gate, this last state (where they perform on). And in fact we can do this on 2 ions, but we can also select ions in a long string to do this logic gates, and this is, of the topic, the soul idea of quantum computing these days.

恐怕没有时间给大家展示更多细节了，不过真的是可以通过这种映射实现量子门操作的。实际上我在NIST（国家标准与技术研究所）时，有过一篇文章阐述这个观点，大家正好都在一起，那时候我的同事Chris Monroe正好也在NIST，文章里的工作完成了逻辑门操作，是对最后这个态的操作，既然我们可以对两个离子做量子逻辑门操作，那么也可以在一串序列中选择离子来做逻辑门操作，这也是量子计算这个方向的关键思想。

you want to be able to connect arbitrary quantum bits in your quantum computer, and this was an experiment, this comes from a company that Chris Monroe and my colleague formed, where they showed that you could do, for 11 quantum bits based on ions sequence, you could do quantum logic gates between any of the ions.

大家想在量子计算机中能够将任意量子比特联系起来，这是一个实验结果，这个结果来自Chris Monroe和我的同事组成的公司，这里他们展示的结果基于11个离子序列的量子比特，可以完成任意离子之间的量子逻辑门操作。

The other thing I want to say a little about, what Peter Zoller will talk about in Shanghai, is that not only can we do quantum computation, but we can get one quantum system to mimic or simulate another quantum system. This is a bit topic of interest, Chris Monroe, Rainer Blatt my friend and colleague from Innsbruck where Peter Zoller is from, and also John Bolinger, my colleague from NIST. They've been able to simulate some complicated interactions between single atom systems. So what about how we scale to larger numbers?

我还想说的一点，Peter Zoller在上海也会讲到，我们不止可以做量子计算，也可以用一个量子系统来模拟另一个量子系统，很多人对这个感兴趣，包括Chris Monroe，我的朋友和同事Rainer Blatt，他来自Innsbruck，Peter Zoller也在那里，还有我在NIST的同事John Bolinger。他们已经可以模拟单原子系统之间的一些复杂的相互作用，那么怎样扩展到更大的数目呢？

one idea we have is, I won't have time to go through this, rather than trying to do everything in a single trap, a 3-dimensional well, what we would do is that we might have arrays of these individual little things, and move the ions around if we want to do, say, a logic gate between these two ions here. It's they're from different locations in this array, and then move it into this location to do logic gate to do next step. So I won't say lot about how we do that in the end of time, so one of things I want to explain here is that this picture is even out of date, I wanna give you an idea, these are just group that I know about that are exploring these ideas with just atomic ions, the kind of things we are doing. So you can see there is a huge number of groups around the world, and then there's other physical platforms, some based on superconductors, some based on quantum dots, condensed matter systems. So there is a huge number of groups working on this around the world

一种方法是，我没有时间全部都讲完了，不是在单个三维势阱中完成所有操作，而是这样来做，我们可以做成大批这种单个的小序列。按照需要移动这些离子，比如这里的两个离子做逻辑门，它们在这个大序列中处在不同的位置，然后把它们移动到这个位置来做逻辑门。最后时间我就不讲怎么实现了，我还想说的一点是，这张图上的信息没有更新，但我想告诉你们的是，这些只是我知道的用离子研究量子计算小组，所以大家可以看到全世界有很多小组，而且还有用其他物理平台进行实验的小组，有些基于超导体，有些基于量子点或者凝聚态系统等，所以全世界有大量的研究组在开展这项研究。

and I won't have time to describe that either, but... so what about the future? Well, so far that we need to, there is are too many errors, we need to improve the precision of the logic gates, that's probably the biggest thing, we need ways to scale. And you know, I started out with Peter Shor's factoring algorithm, that this idea of simulation, I think many of us are perhaps more excited about that, because they could be very general to help us solve a host of problems in physics. And in the quantum world, it turns out we can use special states to improve the sensitivity, in general we call that metrology. Those are the ways to do that, interestingly there are now a number of commercial companies which you may have heard of, are working on this, not just laboratories around the world.

当然我也没时间细说了，那么未来是什么样子呢？目前的（量子计算操作）还有太多的错误，所以我们需要提高逻辑门的准确性，这可能是最重要的事，我们也需要扩展规模的方法，还有我开始就讲过的Peter Shor的大数分解算法，还有量子模拟，我想你们很多人或许对这个更感兴趣，因为量子模拟在帮助人们解决大量物理难题方面可以是非常通用的。结果证明量子世界中我们可以利用特殊的量子态来提高测量灵敏度，大体上我们把这称作计量学，这些是实现的方法。还有有意思的是，你们可能已经听说过，现在有一些商业公司也在做量子计算的研究，所以不只有世界上的这些实验室在做。

Let me... I'll conclude you now, So I talked a little bit about Schroedinger's Cat, anyway it turns out we can at least at smaller scale now. We can make a state where it's an equal superposition of all of our qubits in the lower state and simultaneously the qubits in the upper state. And what we can do in experiments, it turns out that our quantum bits they behave like little magnets, they have what we call magnetic moment. But a very large number of these quantum bits, they behave more like a macroscopic magnet, so we could take this quantum state here, we could select the first bit and move it over, say, into this zone here, and this zone here will have the remaining quantum bits. But if it's a large enough number, then this is a kind of map of macroscopic magnetization, then in principle we could measure with a classical metre like a compass or something. So what we want to argue is that this is pretty like a Schroedinger's Cat. That if we take a microscopic system, in the case of Schroedinger's Cat a single radioactive particle, and we made this special entanglement state. In the case one of our qubits, where in Schroedinger's example it's a cat, 'Dead' or 'Alive' here is the classical magnetization, its classical magnetization would be pointing up or pointing down.

现在我做一下总结，我谈了一点薛定谔的猫，至少证明现在在较小的尺度，我们可以制作这样一个态，它就是所有量子比特同时较低能级和较高能级的叠加态。实验中的做法是，结果证明量子比特表现得就像小磁铁一样，具有磁矩，大量的量子比特，就会表现的更像一个宏观的磁铁，所以我们可以把这个量子态，比如选择第一个量子比特，把它移动到这个区域，而这个区域里有剩余的量子比特，如果数目足够大的话，这就像是一种宏观的磁化。原则上我们就可以用经典的仪表比如指南针什么的来测量它，所以我们就可以说这就非常像是个薛定谔的猫了。如果用一个微观系统，我们这个例子里就是一个量子比特，而薛定谔的理论中是一个放射性粒子，外加一个特殊的纠缠态，也就是薛定谔的例子中的猫，“死”或“活”对应经典的磁化的指向为上或者指向下。

Anyway the important part of all these experiments is the people working on this, and this is a picture from about a year ago. This is the group in Boulder, Colorado, which I'm still associate with, but anyway the real work of course is done by a large number of students and postdocs and colleagues. It's fun to be part of it for me. but it only came out with the work of all the people here, with that I'll stop. Thanks!

最后对实验来说最重要的是参与研究的这些人，这是一年前的照片，这是在科罗拉多的Boulder的小组，我现在也还在Boulder有任职，当然真正的工作是一大批博士生、博士后和同事共同完成的。对我来讲参与其中很有意思，但是这些成果的产生离不开所有这些人，我的报告到此为止，谢谢！

（完）

关于“墨子沙龙”

墨子沙龙是由中国科学技术大学上海研究院主办、上海市浦东新区科学技术协会及中国科大新创校友基金会协办的公益性大型科普论坛。沙龙的科普对象为对科学有浓厚兴趣、热爱科普的普通民众，力图打造具有中学生学力便可以了解当下全球最尖端科学资讯的科普讲坛。