在麻省理工的一个月里，我学到了很多东西，交了很多朋友。

我的研究课题是：贝尔不等式的计算和在一定噪声条件下的实验要求。

During my one-month stay in MIT, I learned quite a few things and made quite a few friends.

My topic of research was: calculation of bell’s inequality and experimental requirements under certain noise conditions.

在我的第一天，弗带我参观了校园，让我了解一下环境。

弗是研究项目的总经理，他教我们使用数据库进行研究的系统方法。前几次讲座由克主持，他回顾了量子力学的基本概念，并介绍了非线性光学的主题。我们会见了张教授，他是非线性光学、光子探测、单光子产生、信息理论和最重要的量子密钥分配方面的专家。他教我们如何解纠缠光子对对应的薛定谔方程。克还教了我一些matlab。

On my day one, F took me around the campus and let me get acquainted with the whereabouts.

F is the general manager of the research program and taught us systematic ways of doing research with a database.

The first few lectures were given by C, who reviewed the basic concepts of quantum mechanics and introduced the topic of non-linear optics.

We met with professor Zhang, who is an expert in non-linear optics, photon detection, single photon generation, information theory and, most importantly, Quantum Key Distribution.

He gave us lectures regarding how to solve Schrodinger equations corresponding to entangled photons pairs.

C also taught me some matlab.

在第二周，克教给我们关于挤压状态和贝尔不平等的概念。他指定了一篇70页的论文和其他几篇论文来阅读，以便我们能够理解贝尔不平等的要点。

在课堂和其他会议上，我问了大量的问题，并广泛地拓宽了我对基本量子力学的知识。张教授对他正在进行的有关量子密钥分配的研究进行了综述，这可以确保量子通信比旧协议快数百倍。

克还带我们参观了一次实验室，教我们如何使用技术使QKD实验成为可能。

In the second week, C taught us concepts regarding squeezed states and Bell’s inequality.

He assigned an 70-page-paper and a few other papers to read so that we can grasp the gist of bell’s inequality.

I asked considerable amount of questions during the classes and other meetings and extensively broadened my knowledge about basic quantum mechanics.

Professor Zhang gave us reviews about his on-going research about quantum key distribution, which can ensure quantum communication hundreds of times faster than the older protocol.

C also gave us a lab tour and taught us about the technologies being employed to make the QKD experiments possible.

关于贝尔不等式的研究始于第三周，我们开始计算贝尔不等式。

我们被介绍给中国科学院的徐教授。徐教授给我们讲授了当前的成像技术和他自己正在进行的关于光子扫描仪成像和利用空间和时间相关性产生高分辨率图像的成像处理技术的研究，这些技术即使在单像素条件下也能很好地工作。

The research about Bell’s inequality starts in week three and we start doing computations of the bell’s inequality.

We were introduced to professor Xu from Chinese Academy of Science.

Professor Xu gave us lectures on the current imaging technologies and his own on-going research about the imaging with photon scanners and imaging processing techniques using spacial and time correlation to yield high-resolution images, which works well even under single pixel conditions.

上周，我们在低探测效率和暗计数可能性下，对贝尔不等式进行了计算。

方程式输入很痛苦，结果不太令人满意，因为我得出的结果超过3，而s值不可能超过2*2^0.5。

除此之外，研究科学家董教授还为我们讲授了非常丰富的傅立叶光学、用麦克斯韦方程求解光学问题以及许多求解波传播的新方法。

e^ikx系统特别有趣。最后一天，研究科学家弗给我们买了晚餐。

In the last week, we did the computations of bell’s inequality under low detection efficiencies and possibilities of dark count.

The equation typing was painful and the results weren’t quite pleasant since I yielded a result above three while the S value is impossible to surpass 2*2^0.5.

Apart from that, research scientist Dong gave us really informative lectures on Fourier optics, solving optical problems with maxwell equations and a lot of new ways of solving for wave propagation.

The e^ikx system was especially intriguing. At the last day, research scientist F bought us dinner.

在整个课程中，弗给我们讲授了如何使用尾注来搜索和组织论文。

他告诉我们如何正确地引用和处理google学者、sci、word和endnote之间的关联，从而更有效、更准确地工作。这些都是重要的研究技能。

此外，我还可以利用麻省理工学院免费获取的所有论文，建立一个可能需要的论文的小基础，这非常有用。我们还听到了图书馆员（也是麻省理工学院的生物学家）就高效文件管理和使用乳胶以及高效使用麻省理工在线图书馆的主题所做的一些讲座。

Throughout the program, F gave us lectures on how to use endnote to search for and organize papers.

He informed us how to cite correctly and maneuver the correlations between google scholar, SCI, word and endnote to work more efficiently and accurately.

These are all important research skills.

Moreover, I was able to build up a small base of possibly needed papers using MIT free access of all papers, which was quite useful.

We were also able to hear some lectures given by the librarian, who is also a biologist at MIT, on the topics of efficient file managing and using LATEX as well as efficiently using MIT online library.

我们在学生中心的大街对面有食物。选择非常有限，很容易让人厌烦。四区披萨店不仅供应糟糕的披萨，而且收费过高。相比之下，在家里提供的食物更令人愉快。

上下班不太愉快，因为坐火车和公共汽车到马赛大街77号要花一个多小时。我唯一的同学于也是我的好老师。他将在纽约大学读四年级，他告诉我很多事情，特别是研究，在大学里是如何工作的，这大大提高了我大学生活规划的复杂性。

他在学习上帮了我很多，回答了我很多学术问题，因为他有我没有的所有大学教育。

We have food across the Mass Ave in the Student center.

The choices are extremely limited and easily bores people.

The area four pizza place not only serves awful pizza, but also charge exorbitant prices.

The food provided at the home stay was much more pleasant in contrast.

The commute was not pleasant since it takes over an hour to take the train and the bus to get to 77 Mass Ave.

My sole classmate Yu was a good teacher to me as well.

He is going to be a senior in NYU and he told me quite a lot about how things, especially research, works in the university, which greatly improves my sophistication of college life planning.

He helped me a lot with the studies and answered a lot of my academic questions since he has all the college education I don’t have.

很令人失望的是，虽然我向一位教授保证会领导这项研究，并且我能从他那里得到一封推荐信，但我甚至连一位麻省理工的教授都没能见到。尽管一线希望是弗仍在帮助我找到一位教授来介绍我。

进出美国的旅程虽然漫长，但很愉快，因为它是卡塔尔排名第二的航空公司，飞机也很舒适。

It is very disappointing that, although promised a professor would lead the research and that I would be able to get a recommendation letter from him, I was not even able to meet a MIT professor.

Although the silver lining is that F is still helping to find a professor to introduce me to.

The trips in and out of America was, although long, pleasant since it was the NO.2 ranking Qatar Airlines and the planes were comfortable.

总的来说，这个研究项目教会了我很多关于学术和生活的知识。它告诉我研究看起来是怎样的，它们并不总是按照你想要的方式进行。它给了我很多关于如何成为一个成功的学者的信息，后来又给了我一个教授。在学术界，人际关系的工作方式也很有用，我希望我已经建立了一些个人关系，这对我未来的职业生涯有帮助。

In general, this research program taught me a lot about academics and life.

It tells me how research looks like and that they don’t always go in the way you want them to go.

It gives me a lot of informations regarding how to become a successful academic, and later, a professor.

The ways relations work in academia was also informative and I hope I have made some personal connections that would be useful in my future career.

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