The two conferences I attended these last weeks (CEQIP and Vaxjo) were pretty good in science, food, drink, location and atmosphere. For me, they were also full of Proustian madeleines: I have met again so many colleagues and realized how they have actually shaped my life, even when the interaction had been short.
- Mario Ziman is one of the organizers of CEQIP. I met him in my very first conference in quantum information, in the castle of Budmerice near Bratislava, back in 2001. He was doing his PhD under the supervision of Vladimir Buzek, I had recently started my post-doc with Nicolas Gisin. As an outcome of those discussions, Mario and I (and Nicolas and Vlado and another student called Peter) worked in two papers about entanglement and thermalization. At that time, it was a rather unusual topic; now it is a big one, only in CEQIP we had at least three presentations. None of the young authors was probably even aware of our old works, but Mario and I knew better than struggling for recognition: we simply sat there in the back, enjoying the progress of the field and exchanging nods.
- I have had fewer interactions with the other organizer, Jan Bouda; but I cannot forget a funny moment when he was visiting Singapore, probably in 2007. In the old big office of was to become CQT, Andreas Winter, Nicolas Brunner and I asked him to explain his research. He started out: “I don’t know if you are familiar with quantum cryptography”… This time, I discovered that Jan is very familiar with Moravian wines and their weaker and stronger relatives.
- Another Slovak in CEQIP: Martin Plesch. He is presently working in Brno and has picked up the topic of randomness. In the conference in Budmerice in 2001, he was an undergrad. He had been tasked to drive Nicolas Gisin and me to Vienna airport on the last day. It was raining, we were a bit late, and Martin was going rather fast on those country roads, keeping really, really close to the car in front.
- In Vaxjo I met again Hans-Thomas Elze, a German working in Pisa, who is the organizer of a series of conferences in Tuscany. When I went in 2004, it was held in Piombino. At that time, Hans-Thomas was still working in Brazil: as a result, the proceedings of that conference were published in Brazilian Journal of Physics. My paper dealt with an unconventional question and (as you can imagine from the journal) was forgotten until the group of Stefan Wolf made a great progress in 2011. The final solution of the problem appeared in Nature Physics. In Vaxjo, Hans-Thomas invited me to attend his next conference in September 2014. I don’t think there is an Etruscan Journal of Physics, but we’ll see…
- Since a few years, I coincide with Mauro D’Ariano at least once per year and we always have good conversations. In the middle of complaints about bureaucracy, punctuated by the typical Italian word –zz-, he keeps an exemplary scientific drive. A few years ago, we were having fast food lunch in the March Meeting in Boston. He was telling me that, in his maturity, he wanted to start tackling “really serious” problems. Concretely, he had been reading a lot about field theory, cosmology, relativity… and was declaring his disappointment in finding gaps in the usual arguments. He had decided to try and reconstruct physics from scratch… well, from some quantum form of scratch. Normally, I tend to dismiss beginners who find problems in what others have devoted their lives too — but here, and with Mauro, I could only agree. A few years have passed: his attempt of reconstructing all that we know from basic quantum building blocks has not hit the wall: on the contrary, he and his collaborators are deriving more and more results, and even the “experts” start taking them quite seriously. Thanks Mauro for showing what serious and constant work can do!
Why am I writing all this? For no special reason other than to record minute events and people who are part of my life of a physicist.