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Posts in category Organization

No chance to devise a polaron,

modern society does not want it, my project about this has been finally rejected. It got an overall mark of 3,0 whlie the threshold this year stand at 2,4. Sad news, yet nothing to be done: competition is tough.

There is however a secret back-door opportunity. My former student Izak Snyman is now a faculty in South Africa. Perhaps they would be interested? We’ll see …

Lecture Fiztekh

This is to report on my visit to alma mater, Moscow Physical-Technical University, commonly called Fiztekh. During Cold-war era this establishment aimed to educating researchers for vast military needs of Soviet Union, with a wise thought that those needs may also include the fundamental research, and good general education would pay off sooner or later. They gave indeed good and challenging education. I liked this, as well as a certian spirit of arrogance, workaholism, freedom and comreadship being cultivated at the place. Honestly think those where best years of my life.

However, I haven’t been to there for ages and did not miss it. While Leonid Levitov has visited me, he told me of his attempt to give a lecture over there: that about graphene for first-year students. According to him, the attempt was hardly sucsessful and gave him lots of bizzare and painful sensations. This was probably the reason he advised me to give such lecture as well.

I was intrigued and ask my Russian connections to arrange the lecture. By nature of my occupation, it’s been called “Nanophysics: yesterday, today, tomorrow”. Actually, I was hoping that I would not go down to these “boring” things: given the diversity of the audience, the concrete facts about the subject would hardly be usefull for them. I’d love to answer the questions like “how to become a scientist?”, “what is a research?”, “how things are rolling in your life?”. I imagined that an ambitious research-oriented student could make use of information I am able to provide about this.

So I came to the place. What followed did not look like a traditional Russian misorganization: rather, it looked like an exaggerated parody on traditional Russian misorganization. When I came to the place, there was a lecture in math: it ended five minutes after the time my lecture was to commence. After that, there were three students left. There was no beamer or any other technical tools. The students were trying to cheer me up: “just begin, perhaps there will be more people coming…” Indeed, people have been coming all the time, the last one arrived in two hours. After all, there was more than a hundred students. In 15 minutes after the beginning of the lecture I was flattered with the following scene: the dean of the department has entered the audience and personally brought a beamer for me while his entourage delivered an extension cord (that has a single socket: either for beamer or laptop)… Anyway, I know such things happen and did not mind.

Upon my feelings, the lecture was a moderate success (perhaps because of Andre Geim who provided me an excellent introduction). I could not completely escape talking about carbon nanotubes and quantum dots. I could not really strike the audience with original thoughts and ideas, and instantly transform them into the beings I like them to be. Yet there were sharp questions (“what’s your salary?”, “what were most important drawbacks in your education?”) and open answers. We could talk about very difficult subjects like latent xenophobia of Russian society and moral responsibility of a scientist.

I was even to able to tell a short story that I guess tells everything about science and education, a story which is difficult to understand but did not seem to be completely lost. I got it from a book of Ukranian sci-fi authors Dyachenko

.

They are rather commercial authors, but this particular story is a masterpiece. This is what I told: “Listen to me: it may sound a silly joke for you now, but memorize it to ponder it later. This is a story of young girl who has begun her studies, and those were difficult. She was stressed for monthes for naught, and worked hard for nothing. Finally, after much sweat, the teacher told her that her performance, although still terribly unsatisfactory, has a little chance of improvement. Thus encouraged, the girl dared to ask a question: “I hardly understand the subject of my studies. How will I use the things learned?” The answer was: “Young lady, you should worry and care about many things, for instance, about your marginal performance, but not about this one. It’s not like you will use the things learned. It’s the things learned that will make use of you. “”

Long live science…

Visit Goteborg

I’m writting in a rather reversed chronological order, since I’ve been to Goteborg (correct English name would be Gothenburg) already more than two weeks ago. Yet it was a wonderful visit organized by Vitaly Shumeiko, and I ought to mention it.

Goteborg houses many nanoscientists, much more than Delft. Formally they are separated into Goteborg University and Chalmers Technical University, yet people from these different organizations sometimes even share offices. Owing to geographical proximity of former Soviet Union and rather harsh climate, an appreciable fraction of nanophysisists speaks Russian. Two of Goteborg faculty are my close university fellows: we graduated in 1982 from the same study-group of 18 people (where – guess now I have to mention it all the time – Andre Geim belonged as well). Know very well the most of Swedish-speaking elder faculty. However, despite many connections to the place, I have not been to Goteborg for 18 years.

Main events took place on Sept. 24. In the morning, I met Yari Kinaret: those were hours of nanomechanics. He introduced a bunch of students – of him, Leonid Gorelik and Robert Shekhter – and who did not have time and had to talk fast. In two hours I’ve heard more new nano- and micromechanical ideas than in two previous years. Leonid Kuzmin, with whom I worked in Moscow University many years ago, shared with me his ideas – some were more like dreams – about superconducting bolometers. He’s also shown interesting preliminary measurements of highly resistive superconducting forks. After lunch I met Per Delsing and Chris Wilson who do quantum optics with microwaves – and do it with zeal and style. They, Tsukuba gang and several other groups are active in microwave artificial atoms. Next was Serge Kubatkin, he was pioneered graphene on SiC substrate and has shown me astonishing Quantum Hall plateaus. Vitaly Shumeiko, fellow theorist, told about his work on Andreev dots under irradiation: a topic Ciprian and me will tackle soon.

To complete the (scientific) joy of the day, I was invited to a warm party and exclusive diner in Leonid Gorelik’s place. Officially we cannot talk about science at the party: yet me and Leonid went out for a smoke and there we discussed a bit of nanomechanics.

Jens Michelsen

has obtained his PhD degree on September 23 in Goteborg. His promotor was Vitaly Shumeiko, and I was appointed as a faculty opponent.

This means I had to work, and, on Dutch standards, had to do work of six: the dramatic part of the defence has lasted the same hour as in the Netherlands while I was alone to question the candidate. Jens has answered very good all complicated theory questions, and me and the audience were impressed. His thesis addresses dynamics of Andreev states.

Jens has spent 10 years studying in Goteborg and will soon depart to Karsruhe for the postdoc with Gerd Schoen, something that I also did many years ago. Best luck, Jens, I am sure I will hear more of your scientific achievements.

Thomas Picot

has obtained his PhD degreee on September 22 in Delft. Hans Mooij and Kees Harmans were the promotors.

Upon his arrival in Delft, Thomas has impressed me with his strange views on quantum detection. By “strange” I do not imply “incorrect” or “unconventional”, just “strange”. The impression was so strong as to motivate me for a research project on qubit detection. The project is accomplished but still waits for a write-up, already for years.

Meanwhile Thomas has been working on practical quantum detection. His views have become less strange as to judge from the thesis, the achievements have multiplied. The committee members were most impressed by the revival of swithiching detector Thomas made.

During the defence, we’ve discussed his proposition about working on character, and he’s impressed me once again with razor-sharp definions of the subject.

Kavli day Bionanoscience

On September 16, we scientists and stuff of Kavli Institute have had an important and entertaining day.

The day has started from Grand Opening of Department of BioNanoScience. This is an offsping of our department started by Cees Dekker and Ninke Dekker (and their are not relatives, can you imagine) to promote biophysics at nanoscale. The opening has started with short official speeeches and went on with a nice scientific workshop. I liked the event, since despite its official orientation it contained lively features not entirely planned (like in the beginning the laptop of Cees has fallen down and it took up to five minutes to get it running). There was a discussion table after the talks on the topic if biology becomes engineering. The statements of the people at the table and responses from the audience were so unprepared and provocative as to create a surreal impession of importance and relevance of the topic. Do not ask me for the details, since if I’m asked to associate biology and engineering, my dentist is always the first and dominant association and the associations that follow are not at all enjoyable.

The discussion table was a theatre, there was also a real theatre with actors meant to entertain (and not quite tuned to my personal taste). The official speech of university president Dirk Jan van den Berg was sandwiched between the performances of this gang and, by virtue of taking place in a big make-shift tent, looked a part of it. Why am I so critical about this part? Simple. I got to there hoping for a free lunch. However, the audience was numerous, young and assertive. When it came down to food dispersion, I had no chance in Darwin-style events followed and had to resort to usual cantine food.

After that the Kavli day has begun. At two o’clock the members and stuff of our Kavli gang has been transported 15 miles to Zoetermeer to be processed at an enterprise specializing in corporative entertaining (bedrijfsuitjes in Dutch). Sounds boring? Not at all. First, the enterprise is called Ayer’s rock of all names. If you look at Wikipedia (as I did) what Ayer’s rock is you can already appreciate the creativity and certain romantisism of place owners. Indeed, they have provided some good fun

First part for me was GPS adventure. Everybody made fun of me for this part because of my adventures in Aspen. However, it went good and it was entertaining. We were the team of six given a Garmin unit and some challenging tasks that require the use of the unit. What stroke me is the task separation that has been authomatically and spontaneously established in our team. Me being professor had to keep the papers in order, cite the tasks loudly, collect the results and conceal my confusion over the run of events. The postdoc took the actual organization that included preventing the group sinking in marches, taking wrong turns and encouraging fullfilment the tasks. The indispensible apparatus has been operated by the senior phd student who gave us directions and readings required. And the students, as ususal, did the job. So it was like in a real research group. With my wise guidance, we’ve completed all tasks and made a record by scoring as high as possible. Too bad the responsible personeel was not able to spell my name to put it to the annals

The apotheosis was the transfer of Kavli directorship from Hans Mooij to Cees Dekker. That took place in a climbing hall. Hans gave a speech from 20m height and jumped down. He was connected to a rope so that the impact was less than you could imagine, but still it was spectacular. Then Cees took the rope and climbed up to the height to become the new Kavli director. These moments were quite thrilling since Cees did not simulate but actually climbed. His right foot did it fine while left foot from time to time has been searching for support: and everybody was afraid it won’t find any… After the event, I found it prudent to utter a light critisism to Cees, like he could train more on the same wall before the ceremory. No, said Cees, you don’t understand anything in climbing, I did it in the bast way possible. Thereby he has fully convinced me that he will be the best Kavli director one could imagine…

What else? I’ve attempted Djemble drum workshop, but could not do much and felt like a loser. Good diner has softened my feelings and was a perfect ending of the day. Guess everybody of us can say so. Long live Kavli

Busy inactivity

is what I filled with the first half of September. That does not bring me to a good mood since I will be travelling a lot starting next week and could have used this time to move towards flamming research goals and preparing the course for winter semester. Yet unfinished bisness, organizational matters, incautious promises (that result in inconvenient deadlines) and vanity (that results in unnecessary deadlines) have eaten most of the time. Some weird activities included:
– visiting twice Russian embassy in the Hauge
– making physcological portrait of one of the students
– studying open source packages that provide hierarchical menu systems in Python
– attending a talk about definition of quantum computer
– reading a chapter from a book of Abrikosov that I failed to understand thirty years ago (and still do not properly understand)
– weighting up the options to use light or heavy holes for a device that does not care about the hole weight
– writting four referee reports for journals I usually do not read.

And so on. Must confess that my attempts to avoid real work were quite sucsessful.
And they seem to become exemplary for others. Our secretary won’t be around for a couple of days: she studies how to provide first aid. In case she’d be absent for a reason, shouldn’t I learn this as well?

Week Konstanz

This is yet another overdue report: week 16-20 August in Konstanz.

Konstanz is a beautiful city at Bodenzee lake and German-Swiss border. My old collaborator Wolfgang Belzig works there. Yet none of those was a reason to visit there this time.

Guido Burkhard and Daniel Loss have had a splendid idea to organize a school/workshop on spin-based quantum information processing. Besides an interesting and “hot” central topic, the gathering was exceptionally well planned: all aspects and directions of the activity were represented by prominent speakers giving long and informative talks, younger people presenting newer things in shorther talks, big number of students with posters, opportunities for discussions etc. Not mentioning exclusive location and good food:)

I talked about spin superconducting qubits.

Vincent Mourik

has graduated today with 8,5 mark. I knew Vincent a bit and I must say I underestimated him, perhaps because he’s rather timid. There was not only a spectacular result in his thesis: it’s been very well written, and the presentation was close to ideal. Vincent collaborated with Ciprian and will remain in Quantum Transport group as PhD student. Best sucsess, Vincent!

Second week Aspen

This is an overdue report about the activities in Aspen.  As to the talks I attended and liked they were as follows:

Fiona Burnell from Oxford told us about universal phase transitions in topological lattice models. While I guess I understood the main idea and appeal of the topics, there was a clear inverse perspective effect: the more details and more explanations Fiona gave the lesser my understanding got. Partly this was due to the specifics of the workshop talk: you want not only be comphrehensive in general, you wish to demonstrate that you belong to a specific community… Short way to do so is to use a specific slang without explanation,

Felix von Oppen told us about energy relaxation and thermalization of hot electrons in quantum wires. There was a tedious calculation meant to illustrate electron-hole asymmetry of energy relaxation in 1d geometry and explain thereby recent experimental findings of Amir Yacoby. The theory is all fine while I am not sure about the answer upon substituting the numbers: looked too big of an effect…

Chetan Nayak from Microsoft Station Q gave a talk about recent developments with Ising anyons and nearly Ising anyons. This reported an attempt to expand possibilities of topological quantum computation beyond its known limits, beyond braiding. While I appreciate vigour, determinance and beyond-the-road inventiveness of the authors, I could not accept the stream of the research. As to me, if you formulate a problem, you’d bring an answer at some stage. Reformulating the problem again and again just because the the answer does not look interesting not satisfying topologically-ideological constrains that lay beyond the subject itself must be an interesting educational game.

Colloquium by Joerg Schmalian, Iowa State, on the physics of Fe-pnictides was pleasantly reminiscent of my solid state youth. Was all as in good old days: new physical system, simple phenomenological approach, intriguing new symmetry revealed…

Our exercises with Leonid Glazman were about density of states in SNS systems in specific limits. Each day brought a new fancy answer that provided a fascinating picture and at the same time could make an exemplary problem in mathematical analysis: at the second-third year level. If we were ph.d. students we would know how to fill our thesises: unfortunately, the happy times have passed and, by the end of the week, we’ve decided to think of more serious stuff.

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