Quantum Info Processing Seminar

Quantum de Finetti Theorems for Local Measurements

Aram Harrow

Assistant Professor
Center for Theoretical Physics at MIT
Thursday, April 11, 2013
09:30am - 11:00am
2725 Beyster Bldg.

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About the Event

The quantum de Finetti theorem states that subsystems of symmetric quantum states are close to mixtures of i.i.d. states. Depending on exactly how "close" is quantified, this theorem can have many applications to quantum information theory, quantum complexity theory, and even classical optimization algorithms. However, previous bounds scaled badly with either dimension or the number of systems. I'll give an overview of why de Finetti theorems are useful, describe a way to use information theory to improve existing bounds, and discuss applications and open problems. Based on 1210.6367, which is joint work with Fernando Brandao.


Aram Harrow grew up in E. Lansing, MI, before attending MIT for his undergraduate (math and physics) and graduate (physics) degrees. He then served as a lecturer in the math and CS departments of the University of Bristol for five years, and as a research assistant professor in the University of Washington CS department for two years. In 2013, he joined the MIT physics department as an assistant professor. His research focuses on quantum information theory, quantum algorithms and quantum complexity, and often seeks to make connections to other areas of math, physics and theoretical computer science.

Additional Information

Contact: Carl Miller


Sponsor(s): EECS

Open to: Public

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