Karol Życzkowski (born 1960) is a Polish physicist and mathematician. He is a professor of physics at the Atomic Physics Department, Institute of Physics, of the

Jagiellonian University The Jagiellonian University (, UJ) is a public research university in Kraków, Poland. Founded in 1364 by Casimir III the Great, King Casimir III the Great, it is the oldest university in Poland and one of the List of oldest universities in con ...

Kraków , officially the Royal Capital City of Kraków, is the List of cities and towns in Poland, second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Voivodeship, the city has a population of 804,237 ...

, Poland, and also at the Center for Theoretical Physics of the

Polish Academy of Sciences The Polish Academy of Sciences (, PAN) is a Polish state-sponsored institution of higher learning. Headquartered in Warsaw, it is responsible for spearheading the development of science across the country by a society of distinguished scholars a ...

in Warsaw. He worked as a Humboldt Fellow at the University of Essen (1989–1990) and as senior Fulbright Fellow at the University of Maryland, College Park (1996/97). In 2005/06 visiting scientist at the Perimeter Institute, Waterloo (Ontario). Member of

Academia Europaea The Academia Europaea is a pan-European Academy of humanities, letters, law, and sciences. The Academia was founded in 1988 as a functioning Europe-wide Academy that encompasses all fields of scholarly inquiry. It acts as co-ordinator of Europe ...

since 2014. Życzkowski was a member of the Commission on European Matters PAU created by the

Polish Academy of Learning The Polish Academy of Arts and Sciences or Polish Academy of Learning (, PAU), headquartered in Kraków and founded in 1872, is one of two institutions in contemporary Poland having the nature of an academy of sciences (the other being the Po ...

. Życzkowski has contributed to quantum chaos,

quantum measurement In quantum physics, a measurement is the testing or manipulation of a physical system to yield a numerical result. A fundamental feature of quantum theory is that the predictions it makes are probabilistic. The procedure for finding a probability ...

, entropy, and entanglement, the theory of voting and jointly with Wojciech Słomczyński designed th
Jagiellonian Compromise
- a voting system for the Council of the European Union. He worked on complex Hadamard matrices,

numerical range In the mathematics, mathematical field of linear algebra and convex analysis, the numerical range or field of values of a complex number, complex n \times n square matrix, matrix ''A'' is the set :W(A) = \left\ = \left\ where \mathbf^* denotes t ...

and numerical shadow.Web resource on numerical range and numerical shadow
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References

External links

* * Members of Academia Europaea 20th-century Polish mathematicians 20th-century Polish physicists Living people 1960 births 21st-century Polish physicists {{Poland-scientist-stub