# Events (2015)

## Seminar

Quantum Optics without photons --- from basic effects to new quantum information architectures.**Speaker:**Martin Schütz

**When:**May. 06. 2015 15:00

**Where:**Erwin Schrödinger Saal

Traditionally, Quantum Optics is a field of research investigating light, matter and its interactions. In this talk, I will discuss several instances were methods and ideas from Quantum Optics find no ...

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Towards Quantum Simulation with magnetic lattices**Speaker:**Arthur La Rooij

**When:**Apr. 30. 2015 13:30

**Where:**Erwin Schrödinger Saal

We use nano-lithography techniques to create lattice potentials in permanent magnetic films at atom chips. These lattices can be created over a large range of length scales and are used to trap mesosc ...

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Frequency stabilization of diode lasers using a narrow bandwidth optical resonator and possible applications for ultracold atoms experiments**Speaker:**Chi Zhang

**When:**Apr. 30. 2015 09:00

**Where:**Erwin Schrödinger Saal

This thesis describes the frequency stabilization of external-cavity diode lasers with a high-finesse optical cavity by the Pound Drever Hall technique, as well as the potential applications of optica ...

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High performance Quantum Computing**Speaker:**Matthias Troyer

**When:**Apr. 29. 2015 14:01

**Where:**Erwin Schrödinger Saal

## Seminar

Long-time atom interferometry for tests of fundamental physics**Speaker:**Susannah Dickerson

**When:**Apr. 22. 2015 17:15

**Where:**lecture hall C

Light-pulse atom interferometry is a technique that is exquisitely sensitive to inertial forces. As such, it has exciting applications both in fundamental physics for precision tests of gravity, elect ...

Read more## Physics Colloquium

Topological Phases of Sound and Light**Speaker:**Florian Marquardt

**When:**Apr. 21. 2015 17:15

**Where:**lecture hall C

## Talk

Towards a MOT for CaF and prospects of laser cooling SrOH**Speaker:**Börge Hemmerling

**When:**Apr. 21. 2015 09:15

**Where:**Erwin Schrödinger Saal

## Seminar

Decoherence and absorption spectra of impurities in ultracold quantum gases**Speaker:**Richard Schmidt

**When:**Apr. 16. 2015 09:00

**Where:**Erwin Schrödinger Saal

## Seminar

Magnetic crystals and helical liquids in multi-component Fermi gases**Speaker:**Luca Taddia

**When:**Apr. 14. 2015 10:30

**Where:**Erwin Schrödinger Saal

Abstract: The joint action of particle-particle interactions and gauge fields is well known to give rise to exotic quantum phases of matter, whose most famous example is fractional quantum Hall effect ...

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Quantum cavity electro-mechanics with ultra-high impedance microwave circuits**Speaker:**Johannes Fink

**When:**Mar. 23. 2015 17:00

**Where:**Erwin-Schödinger-Saal, IQOQI

Superconducting circuits are at the focus of quantum engineering research because of their potential for scalable quantum information processing and simulation. One disadvantage of circuit QED systems ...

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Matter-wave interferometry close to the surface of an atom-chip**Speaker:**Ron Folman

**When:**Mar. 05. 2015 09:00

**Where:**Erwin Schrödinger Saal

Matter-wave interferometry on atom-chips has been around for a decade. Several groups around the world are now operating such devices based on different methods for splitting such as light, RF, and MW ...

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Commensurability and friction in an ion-cavity system**Speaker:**Thomas Fogarty

**When:**Mar. 03. 2015 15:00

**Where:**IQOQI lecture hall

I describe the process of self-organisation of ions in an optical cavity due to the interplay between the Coulomb forces of the ions and the optical forces from the cavity. This can be described in th ...

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Application for PhD position**Speaker:**Maciej Malinowski

**When:**Mar. 03. 2015 10:00

**Where:**University seminar room east, 4th floor

## Talk

How do you measure a Fermionic Quantum Field as a Theorist? -- Unruh-DeWitt-type Particle Detector Models for Scalar and Spinor Fields**Speaker:**Daniel Hümmer

**When:**Feb. 03. 2015 15:00

**Where:**Erwin Schrödinger Saal.

In theoretical physics, there is multitude of different mathematical methods how to explore the properties of a quantum field. Among these, particle detector models have become a pop ...

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What does it mean for half of an empty box to be full?**Speaker:**Eric Brown

**When:**Feb. 02. 2015 15:00

**Where:**Erwin Schrödinger Saal.

It is well known that the vacuum state of a quantum field is spatially entangled. This is true both in free and confined spaces, for example in an optical cavity. The obvious consequence of this, howe ...

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Magnetism with spinor Bose-Einstein condensates with antiferromangetic interactions**Speaker:**

**When:**Jan. 29. 2015 09:00

**Where:**Erwin Schrödinger Saal

We experimentally study the magnetic properties of spin-1 Bose-Einstein condensate of Sodium at equilibrium. In this system the atoms can occupy any of the three Zeeman states. We measure the spin sta ...

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Back-action driven transport of Bloch oscillating atoms in ring cavities**Speaker:**B. Prasanna Venkatesh

**When:**Jan. 27. 2015 14:00

**Where:**Erwin Schrödinger Saal.

Transport under uniform bias in normal metallic systems requires dephasing of Bloch oscillations due to presence of impurities. In contrast, for atoms in optical lattices (with an external applied un ...

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How to manipulate neuronal function in a mouse brain, without wires**Speaker:**Hans Bachor

**When:**Jan. 22. 2015 15:00

**Where:**IQOQI lecture hall

Light is now an indispensable tool among neuroscientists, particularly for the visualisation and characterisation of cells and proteins and for functional imaging. Coherent laser technology with spect ...

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Outlook for the Quantum Computation of Quantum Chemistry**Speaker:**Ryan Babbush

**When:**Jan. 15. 2015 15:00

**Where:**Erwin Schrödinger Saal

The central problem of quantum chemistry is to solve for the energy of electrons interacting in the nuclear potential of a molecule. While widely believed to be classically intractable, quantum comput ...

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Gravitational quantum physics**Speaker:**Časlav Brukner

**When:**Jan. 09. 2015 10:00

**Where:**Erwin Schrödinger Saal

Quantum physics differs from classical physics in that no definite values can be attributed to observables independently of the measurement context. However, the notion of time and of causal order pre ...

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Gravitational quantum physics**Speaker:**Časlav Brukner

**When:**Jan. 08. 2015 10:00

**Where:**

Quantum physics differs from classical physics in that no definite values can be attributed to observables independently of the measurement context. However, the notion of time and of causal order pre ...

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Gravitational quantum physics**Speaker:**Časlav Brukner

**When:**Jan. 07. 2015 13:00

**Where:**Erwin Schrödinger Saal

Quantum physics differs from classical physics in that no definite values can be attributed to observables independently of the measurement context. However, the notion of time and of causal order pre ...

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