spielwiese. (Posts about leiden.)https://spielwiese.fontein.de/tag/leiden.atom2019-11-17T10:45:43ZfelixNikolaleiden.https://spielwiese.fontein.de/2012/11/11/leiden/2012-11-11T12:53:48+01:002012-11-11T12:53:48+01:00felix<p>last week i was in <a href="https://en.wikipedia.org/wiki/Leiden">leiden</a>, attending a workshop on <a href="http://lorentzcenter.nl/lc/web/2012/519/info.php3?wsid=519">post-quantum crytpography and quantum algorithms</a> at the <a href="http://lorentzcenter.nl/">lorentz center</a>. it was a collection of talks and working in smaller groups, where we discussed certain topics, such as <a href="https://wiki.pqcrypto.org/mediawiki/index.php/Working_group:_Quantum_attacks_on_ideal_lattices">quantum attacks on ideal lattices</a> in more detail, trying to find a way to use <a href="https://en.wikipedia.org/wiki/Quantum_computer">quantum computers</a> to speed up attacks against primitives of <a href="https://en.wikipedia.org/wiki/Post-quantum_cryptography">post-quantum cryptography</a>. as this is somewhat close to my research – i work on analyzing a <a href="http://arxiv.org/abs/1111.1348">quantum algorithm</a> with <a href="http://www.eecs.ucf.edu/~wocjan/">pawel wocjan</a> and am working on lattices and lattice reductions – i was very happy to attend this meeting. especially since there were not just some mathematicians, but also a lot of experts on various aspect of quantum computers and quantum algorithms. now i also know a lot more about quantum computing, both from the theoretical side – like having been explained <a href="https://en.wikipedia.org/wiki/Grover%27s_algorithm">grover’s algorithm</a>, which is another of the fundamental quantum algorithms next to the period-finding algorithm family starting with <a href="https://en.wikipedia.org/wiki/Shor%27s_algorithm">shor’s algorithm</a> – and the practical side – what the current technology with regard to building quantum computers is, and how people writing compilers for quantum computers can suffer and how complicated it can be to turn a “simple” algorithm into a circuit. i think this was one of the most productive workshops i’ve ever attended.<br>
unfortunately, i neither took my camera with me (the little one i had with me <a href="https://spielwiese.fontein.de/2012/11/01/ascona-and-bellinzona/">last week</a>, since it is somewhat broken (the sd card slot won’t keep the card anymore, similar to what is <a href="http://www.thephotoforum.com/forum/digital-discussion-q/222744-nikon-d90-memory-card-slot-issue.html">described here</a>), nor did i really had time to take any pictures, as i spend most awake hours doing mathematics. i took a few shots with my mobile phone on the excursion/conference dinner on wednesday, which happend to be on a boat going through <a href="https://en.wikipedia.org/wiki/Gracht">grachten</a> around leiden and the city and also happened to be a very decicious and very spicy asian food buffet. and later, there was a great dessert buffet. one of the best and original conference dinners i had for quite some time :)</p>