Physics and Astronomy Colloquia

*Winter Quarter Colloquia Start at 4:00 pm*

Title: Neutrinos as the key to the universe as we know it

Speaker: Yuval Grossman, Cornell University 

Abstract: There are three open questions in physics which seem unrelated:
Why is there only matter around us? How neutrinos acquire their tiny
masses? Why all particles in Nature have integer electric charges?
It turns out that these open questions maybe related.

In this talk I will explain these open questions, the connection between them, and describe the on-going theoretical and experimental efforts in understanding them.

Host: Andre

Speaker Schedule

Keywords: Physics, Astronomy, colloquium


Title: Semiconductor Quantum Technologies for High-Speed and Long-Distance Quantum Communications

Speaker: Dirk Englund, MIT


Abstract: The Internet is among the most important inventions of the 20th Century. We are now poised for the development of a quantum internet to exchange quantum information and distribute entanglement among quantum memories (and ultimately quantum computers) that could be great distances apart. This kind of quantum internet would have a range of applications that aren't possible in a classical world, including long-distance unconditionally-secure communication, certain types of precision sensing and navigation, and distributed quantum information processing. But we still need to develop or perfect many new types of components and protocols to be able to build such a quantum internet. This talk will consider some of these components, focusing on photonic integrated circuits, diamond spin-based quantum memories, and prototype networks. Specifically, the first part of this talk will review our recent progress in adapting one of the leading PIC architectures—silicon photonics—for different types of quantum secure communications protocols. The second part of the talk will consider how photonic integrated circuits technology can extend the reach of quantum communications through all-optical and memory-based quantum repeaters.

Host: Koch

Speaker Schedule

Keywords: Physics, Astronomy, colloquium


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Martin Zweirlein: TBA

April 14, 2017, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Martin Zweirlein, MIT


Abstract: TBA

Host: Halperin/Garg

Speaker Schedule

Keywords: Physics, Astronomy, colloquium


Title: Schrödinger Cats and Photonic Quantum Information Processing

Speaker: Steve Girvin, Yale

Abstract: 

A revolution is underway in the construction of ‘artificial atoms’ out of superconducting electrical circuits. These macroscopic ‘atoms’ have quantized energy levels and can emit and absorb quanta of light (in this case microwave photons), just like ordinary atoms. The large size of these ‘atoms’ yields remarkably strong atom-photon coupling and has given us the ability to completely control and measure the quantum state of the electromagnetic field in a cavity at the level of individual microwave photons.

In particular, it is now possible to create record large ‘Schrödinger cat’ photon states and cats delocalized and entangled between two boxes. In addition to being used to study quantum mechanics at macroscopic scales, these cat states form a novel but highly successful basis for quantum error correction in a ‘photonic’ quantum computer. This talk will present an elementary introduction to the field as well as an overview of recent progress.

Host: Koch

Speaker Schedule

Keywords: Physics, Astronomy, colloquium


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Mike Lubell: TBA

April 28, 2017, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Mike Lubell, City College of New York

Abstract: TBA

Host: Halperin

Speaker Schedule

Keywords: Physics, Astronomy, colloquium


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Robert Boyd: TBA

May 5, 2017, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Robert Boyd

Abstract: TBA

Host: Selim

Speaker Schedule

Keywords: Physics, Astronomy, colloquium


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Maxim Popselov: TBA

May 12, 2017, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Maxim Popselov, Perimeter

Abstract: TBA

Host: Andre

Speaker Schedule

Keywords: Physics, Astronomy, colloquium


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Laura Newburgh: TBA

May 19, 2017, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Laura Newburgh, Yale

Abstract: TBA

Host: Ulmer

Speaker Schedule

Keywords: Physics, Astronomy, colloquium


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Neil Kelleher: TBA

May 26, 2017, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Neil Kelleher, Northwestern University

Abstract: TBA

Host: Ulmer

Speaker Schedule

Keywords: Physics, Astronomy, colloquium


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Thomas Udem: TBA

October 6, 2017, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Thomas Udem, Max-Planck Institut fuer Quantenoptik  

Abstract: TBA

Host: Gabrielse

Speaker Schedule

Keywords: Physics, Astronomy, colloquium