MPHQ Fellows at MPQ

Dr. Jun Rui Zoom Image
Dr. Jun Rui

Dr. Jun Rui was awarded the first MPHQ Fellowship in October 2017. He is currently working as Post-Doc in Prof. Immanuel Bloch's group on Rydberg macro-dimers

Dr. Erez Zohar Zoom Image
Dr. Erez Zohar

Since January 2018 Dr. Erez Zoher has been officialy granted the status as MPHQ fellow at our Harvard-MPQ Center. Erez Zohar is currently working on:

" Quantum information and optics based methods for quantum field theories, and in particular lattice gauge theories. That involves tensor network studies as well as the design of atomic quantum simulators."

His collaborator at Harvard is Prof. Mikhail Lukin

Dr. Lucas Hackl Zoom Image
Dr. Lucas Hackl

Since August 2018 Dr. Lucas Hackl is working as MPHQ fellow in the group of Prof. Ignacio Cirac. Below you find a short descprition of his scientific work.

Goal: In order to study complex quantum systems, one needs to overcome the exponentially large or even infinite dimensionality of the state manifold. The goal of my research is to find suitable submanifolds that can capture relevant physical properties, but have a sufficiently small dimension to make computations and even some analytical studies feasible.

Direction: The prime example of a low dimensional state manifold are the classes of bosonic and fermionic Gaussian states. They provide a rich mathematical structure, which allows for very efficient analytical and numerical computations. Unfortunately, some structures are too rigid to capture certain properties, for instance they cannot be directly used to describe correlations between bosons and fermions. Building on work by Shi, Demler & Cirac, I am exploring non-Gaussian states that give more flexibility, while retaining many features of Gaussian states.

Applications: The applications of such generalized Gaussian states range from fundamental theory (in particular, quantum fields) to condensed matter physics and the study of cold atoms in quantum optics. An efficiently parametrized new class of states can lead to novel analytical results about concrete physical systems whose ground or eigenstates can be approximated, but also to develop numerical tools exploiting these methods to compute physical quantities.

Co-PI in Harvard: Eugene Demler

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