Beskjeder

We are required to arrange a meeting to evaluate the course. It has to be after the exam, so that this can also be evaluated.  I thought that the simplest is if we have it just after the exam finishes, so the meeting will be in the usual lecture room (LilleFy) on Wednesday December 5. at 13:15. It should not last very long time, but 30 min passes very fast in my experience. I hope that many of you will have time to come, it is very useful for us to understand what works well with a course, and what should be changed.

Joakim

This week we will have the problem solving class on Monday (26/11) 12-14 as usual (Problem set 13).

Tuesday (17/11) and Wednesday (28/11) we will have no regular teaching, but I will come to the usual room at the usual time, 10:15 and answer questions/discuss problems.

Otherwise, do not hesitate to come to my office (FV405) to discuss whatever problems you need help with.

Joakim

The results of the midterm exam are now posted on the webpage. Each question was given a maximal score of 5 points. You can find your score for each problem, and the total (maximal score was 70). If you believe there are mistakes, please tell me.

Students taking FYS9110 have to deliver written solutions to an additional homework project on the geometry of quantum states (chapter 5 in the lecture notes). The problems are available here (in Norwegian only, please tell if some need it in English), and should be handed in on November 20. at the very latest (but I am happy if I get them earlier).

For problem l) it should have been stated that the given formula for delta z_pc only is valid when alpha is sufficiently large. That is, the formula is not exact, but only an approximation in the limit of large alpha (the exact condition is included in the new version of the problem text which I will post on the web page now). 

The problems for the midterm exam are now posted on the webpage. Please ask if you suspect there are misprints, so that I can check and correct them. You are also allowed to ask questions at any time. As I have announced in the lectures, I will come to the usual lecture room at the normal time , 10:15 on Wednesday (17/10) to discuss the problems and answer questions that you may have.

Next week, on Tuesday 2/10, we will discuss protocols for quantum cryptography. To prepare, it is useful to understand something about classical codes, and as a challenge to you I have prepared a secret message that you have to decrypt:

"Zvd zvpvyb lzvdc imcq dktat qkt pvmzysab ptqdttz qkt jhsccgjsh
szy omszqme yvesgz gc cgqmsqty. Evcq utth qksq trwtagetzqsh
cdgqjk ctqqgznc szy wvgzqta atsygznc sat vz qkgc cgyt. Pmq cvet
dvmhy qkgzl qkt pvmzysab ztsata, vqktac dvmhy qkgzl gq usaqkta,
szy eszb dvmhy watuta zvq qv qkgzl spvmq gq. Gz usjq, qkt esqqta
gc vu ftab hgqqht gewvaqszjt gz wasjqgjt. Qkgc gc ptjsmct vu qkt
geetzct yguutatzjt gz cjsht ptqdttz qkgznc uva dkgjk
omszqme-etjkszgjsh ytcjagwqgvz gc zmetagjshhb tcctzqgsh szy qkvct
vaygagzsaghb wtajtwqgpht pb kmesz ptgznc. Ztftaqkthtcc, qkt
evfspghgqb vu qkt pvmzysab gc vu vzhb swwavrgesqt fshgygqb;
ytevzcqasqgvzc vu gq ytwtzy vz ztnhtjqgzn zmepta...

The midterm exam will be one week earlier than previously announced, so that it will not be the same week as field theory, which many of you also follow. This means that it will be in week 42, from October 15. to 22.