MPHQ Events

List of past and future MPHQ events

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Joint IMPRS MPHQ Summer School

This year, the IMPRS Summer School is jointly organised with the MPHQ. Apart from PhD students from the IMPRS-QST, 15 PhD students from Harvard will attend the summer school, as well as several PIs, both from IMPRS and Harvard. More information on the talks and invited speakers will follow at a later stage. [more]
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Prof. Dr. Gerhard Rempe, director at MPQ and co-director of the MPHQ, gave a talk with the title "Ns and Butterflies in Cavity QED" at the MPHQ Spring Scientific Meeting at Harvard. [more]
This talk was held by Dr. Akira Ozawa at the MPHQ Spring Scientific Meeting in Harvard. The spectroscopic study of simple atoms has played an important role in the development of quantum mechanics. The energy levels of hydrogen-like atoms can be accurately described by bound-state quantum electro- dynamics (QED). [more]
This talk was held by Dr. Guillaume Salomon at the MPHQ Spring Scientific Meeting in Harvard. The Fermi-Hubbard model, describing interacting fermions on a lattice, offers a simple framework to study strongly correlated fermionic phases. Closely related to the physics of high-temperature superconductors, the interplay between doping and magnetism in this model manifests itself very differently in one and two dimensions. [more]
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Geometry of variational methods

  • Date: May 24, 2019
  • Time: 11:00 - 11:25
  • Speaker: Dr. Lucas Hackl
  • MPHQ Postdoctoral Fellow
This talk was held by Dr. Lucas Hackl at the MPHQ Spring Scientific Meeting in Harvard. A key challenge in the theoretical study of quantum many body systems is to overcome the exponential growth of the Hilbert space with the system size. Many successful approaches are variational, i.e., they are based on choosing suitable families of states that capture key properties of the system. [more]
On 24 May 2019 the next MPHQ Scientific Meeting will take place at Harvard University. You can view the program of the event here: https://mphq.physics.harvard.edu/program [more]
This talk was held by Dr. Isabel Rabey at the MPHQ Spring Scientific Meeting in HarvardUltracold molecules provide a fascinating testbed for many areas of quantum science. In this talk I will give a brief overview of direct cooling of molecules to ultracold temperatures and present some of the future ideas we have been thinking about in the Rempe group at MPQ [more]
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Prof. Dr. Gerhard Rempe, director at MPQ and co-director of the MPHQ, gave a talk with the title "Cold-collision experiments with polyatomic molecules from a cryofuge" at the conference "New Frontiers in Cold Molecules" at the "Institute for Theoretical Atomic, Molecular and Optical Physics". [more]
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Quantum many-body systems are very hard to simulate, as computational resources (time and memory) typically grow exponentially with system size. However, quantum computers or analog quantum simulators may perform that task in a much more efficient way. In this talk, I will first review some of the quantum algorithms that have been proposed for this task and then explain the advantages and disadvantages of analog quantum simulators. I will also describe a theoretical proposal to solve quantum chemistry problems with such devices. [more]
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Geometric tangent plane methods and the Bose-Hubbard model

  • Date: Feb 21, 2019
  • Time: 12:00 - 14:00
  • Speaker: Dr. Lucas Hackl
  • MPHQ Postdoctoral Fellow
The paradigmatic Bose-Hubbard model describes interacting bosons which can be experimentally realized with ultracold atoms in optical lattices. In this talk, I will focus on the superfluid phase and introduce geometric methods to find approximate ground states and quasi particle excitations. For the variational class of Gaussian states, we can systematically extend Bogoliubov theory and compute quasi particle excitations, life times and spectral functions. To our surprise, we find a bound state below the continuum. Depending on the interaction strength, the dispersion relation of the bound state enters the continuum for large momentum. I will conclude with discussing observable effects and how we can test if this finding is physical. [more]
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Joint Quantum Seminar: Talk by Prof. Gerhard Rempe

Prof. Dr. Gerhard Rempe, director at MPQ and co-director of the MPHQ, gave a talk with the title "Quantum Internet: Vision or Fiction?" at ITAMP as part of the Joint Quantum Seminar at Harvard. [more]
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MPHQ - Inauguration Ceremony

The official Inauguration ceremony of the MPHQ took place in January 2018. Around 200 participants listened to talks and presentations at the Institute for Advanced Study and the Deutsches Museum. Scientists from Harvard and MPQ presented and discussed their research projects and were able to convey their thrilling research topics to a larger public. The Max Planck Harvard Research Center for Quantum Optics was officially opened by Prof. Martin Stratmann, President of Max Planck Society, and Prof. Jeremy Bloxham FRS, Dean of Science, Harvard University. The scientific programme of the inauguration ceremony was completed by fascinating experimental demonstrations by Prof. Markus Greiner and Nobel laureate Prof. Wolfgang Ketterle. [more]
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