Title: Karol Życzkowski
Content:  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 in Kraków, Poland, and also at the Center for Theoretical Physics of the Polish Academy of Sciences 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 since 2014. Życzkowski was a member of the Commission on European Matters PAU created by the Polish Academy of Learning. Życzkowski has contributed to quantum chaos, quantum measurement, entropy, and entanglement,  the theory of voting and jointly with Wojciech Słomczyński designed the Jagiellonian Compromise - a voting system for the Council of the European Union. He worked on complex Hadamard matrices, numerical range and numerical shadow.
Title: Życzkowski
Content: Karol Życzkowski (born 1960), Polish mathematician and physicist ; Michał Życzkowski (1930–2006), Polish technical professor Życzkowski (feminine: Życzkowska, plural: Życzkowscy) is a Polish surname. Notable people with the surname include: 
Title: Michał Życzkowski
Content:  Życzkowski was born in Kraków. In 1954 he graduated at the Tadeusz Kościuszko University of Technology, and in 1958 he received a diploma at the Imperial College London. He became Professor and doctor honoris causa of the Cracow University of Technology, full member of Polish Academy of Sciences and Polish Academy of Learning, Foreign Corresponding Member of the Austrian Academy of Sciences. He was the youngest professor in the history of Poland during his time. He became professor at the age of 31. He advised 29 Ph.D. students, 11 of them were promoted to professors. He had four children, among them Karol Życzkowski. He died in his home city of Krakow.
Title: Michał Życzkowski
Content:  Michał Życzkowski (12 April 1930 – 24 May 2006) was a Polish mechanical engineer.
Title: Andrzej Jamiołkowski
Content:  Andrzej Edmund Jamiołkowski (born March 22, 1946 in Toruń) is a Polish theoretical physicist, rector of the Nicolaus Copernicus University in Toruń (in the years 1993–1999 and 2005–2008). He is known for the Choi–Jamiołkowski isomorphism in quantum information theory. Jamiołkowski graduated from the Faculty of Physics at the University of Warsaw in 1969. After graduation, he began research work at the Nicolaus Copernicus University in Toruń, where in 1973 he obtained a doctoral degree, and in 1982 a postdoctoral degree. In 1990, he was appointed Professor. In the 1960s, he spent over four years on foreign scholarships, including in Munich, Oldenburg 
Title: Andrzej Zajączkowski
Content:  Andrzej Zajączkowski (27 May 1922 in Lublin – 16 December 1994 in Warsaw) was a Polish sociologist, cultural anthropologist, and Africanist. In 1978 he was made professor of the Polish Academy of Sciences and the University of Warsaw; he became the director of the Center for Studies on Non-European Countries (Polish Academy of Sciences) in 1981. He specialized in historical sociology and the sociology of developing countries. He lectured at universities in Ghana and Uganda.
Title: Marek Żukowski
Content:  appointed head of the Department of Quantum Optics at the Institute of Theoretical Physics and Astrophysics in 1995, and was the Institute's director from 2005 to 2018. He has been a visiting professor at a number of universities abroad including the University of Innsbruck, the University of Vienna, Tsinghua University in Beijing and the Chinese Academy of Sciences. Between 2010 and 2018, he was a member of the Council of the National Science Centre. He is the 2013 laureate of the Prize of the Foundation for Polish Science in the mathematical, physical and engineering sciences, for his contributions into the research on multiphoton entangled states, which resulted in the formulation of information causality as a principle of physics.
Title: Marek Żukowski
Content:  He was born on 11 December 1952, in Gdynia, Polish People's Republic. He is a graduate of the Faculty of Mathematics, Physics and Chemistry of the University of Gdańsk. After meeting Anton Zeilinger, he developed an interest in information theory and quantum interferometry. Their first joint scientific paper was published in 1991, later they created a series of international projects called Quantum Optics and Quantum Information. Żukowski also collaborates with Harald Weinfurter from Munich, Jian-Wei Pan from Hefei and Mohamed Bourenanne from Stockholm, as well as the National University of Singapore. He is also involved in a number of European projects such as SCALA and Qubit Applications. He has been working at the University of Gdańsk since 1976. He 
Title: Władysław Zajączkowski
Content:  Władysław Zajączkowski (April 12, 1837 in Strzyżów near the Rzeszów &ndash; October 7, 1898 in Lwów) was a Polish mathematician. Professor of Warsaw Main School, Imperial University of Warsaw (now University of Warsaw), Technical Academy in Lviv (now Lviv Polytechnic; twice a rector). Member of Polish Academy of Learning and French Academy of Sciences. He was specialising mainly in mathematical analysis and differential equations.
Title: Wojciech Zajączkowski
Content:  Wojciech Jacek Zajączkowski (born 19 December 1963 in Bydgoszcz) is a Polish diplomat and historian, since January 2018 serving as an ambassador of Poland to China.

Question: What is Karol Życzkowski's occupation?
Answer: physicist.
mathematician.