# Photon counting for Bragg spectroscopy of quantum gases

@article{Pino2010PhotonCF, title={Photon counting for Bragg spectroscopy of quantum gases}, author={J. M. Pino and Robert Wild and Philip Makotyn and Deborah S. Jin and Eric Allin Cornell}, journal={Physical Review A}, year={2010}, volume={83}, pages={033615} }

We demonstrate a photon-counting technique for detecting Bragg excitation of an ultracold gas of atoms. By measuring the response of the light field to the atoms, we derive a signal independent of traditional time-of-flight atom-imaging techniques. With heterodyne detection we achieve photon shot-noise limited detection of the amplification or depletion of one of the Bragg laser beams. Photon counting for Bragg spectroscopy will be useful for strongly interacting gases where atom-imaging…

## 23 Citations

Bragg spectroscopic interferometer and quantum measurement-induced correlations in atomic Bose–Einstein condensates

- Physics
- 2012

We theoretically analyse the Bragg spectroscopic interferometer of two spatially separated atomic Bose–Einstein condensates that was experimentally realized by Saba et al (2005 Science 307 1945) by…

Information-recycling beam splitters for quantum enhanced atom interferometry.

- PhysicsPhysical review letters
- 2013

A simple model is introduced to describe how an optical two-photon Raman transition is used to split the condensate into two modes, and it is found that by processing this information in an appropriate way, the phase sensitivity of atom interferometry can be enhanced by more than a factor of 10 for realistic parameters.

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- Physics
- 2013

High-gain resonant nonlinear Raman spectrum on trapped cold atoms within a high-finesse optical cavity is simply explained under a nonlinear opto-mechanical mechanism, and a proposal using it to…

Semi-classical dynamics of superradiant Rayleigh scattering in a Bose–Einstein condensate

- Physics
- 2016

Due to its coherence properties and high optical depth, a Bose–Einstein condensate [BEC] provides an ideal setting to investigate collective atom-light interactions. Superradiant light scattering…

In situ measurement of the dynamic structure factor in ultracold quantum gases

- Physics
- 2011

We propose an experimental setup to efficiently measure the dynamic structure factor of ultracold quantum gases. Our method uses the interaction of the trapped atomic system with two different cavity…

Extracting dynamical Green’s function of ultracold quantum gases via electromagnetically induced transparency

- Physics
- 2014

The essential quantum many-body physics of an ultracold quantum gas relies on the single-particle Green’s functions. We demonstrate that it can be extracted by the spectrum of electromagnetically…

Observation of Efimov Molecules Created from a Resonantly Interacting Bose Gas.

- PhysicsPhysical review letters
- 2017

By analyzing the decay dynamics of the molecular gas, it is shown that in addition to Feshbach dimers it contains Efimov trimers, which shows a density dependence due to inelastic atom-dimer collisions, in agreement with theoretical calculations.

Quantum phases emerging from competing short-and long-range interactions in an optical lattice

- Physics
- 2016

This thesis reports on an experiment entering a new regime for strongly correlated manybody physics with ultracold atoms. Up to now, these experiments have mostly been limited to on-site…

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- PhysicsNature communications
- 2015

This work reports on a direct, real-time and nondestructive measurement of the dynamic structure factor of a quantum gas exhibiting cavity-mediated long-range interactions, and provides a theoretical description of this dissipative quantum many-body system.

Chapter 1 - Experimental Methods of Ultracold Atomic Physics

- Physics
- 2012

The broad appeal of research on quantum gases relies on the universality of many-body quantum physics. For example, regardless of whether it is constructed using electrons (as in superconductors),…

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