JILA X317

Entangled two-photon absorption (E2PA) is a process in which entangled photon pairs are used instead of a pulsed laser to excite a two-photon transition. The correlation of these photons in time and space may improve the excitation efficiency. In this work, we develop experimental apparatuses that enable sensitive measurements of E2PA via both transmittance and fluorescence-based schemes. We show strong evidence that E2PA cross sections are several orders of magnitude lower than many prior reports claimed.

Strong quantum correlations lie in the center of many fascinating physical phenomena, as for instance quantum phase transitions. A direct way to study quantum correlations in many body systems is to compute certain observables with the respective wave function. Yet, it is known that reduced density matrices are able to describe and predict directly the bulk of physical features of such quantum phenomena, overcoming the curse of dimensionality of wave-function-based theories.

Abstract

Crosstalk mitigation and in-sequence detection in a dual-isotope trapped ion register

Abstract: This tutorial will introduce computational imaging as a broad range of techniques in which algorithms play a major role in the final image formation process. The basic recipe for computational imaging involves coming up with a forward model that can simulate/predict what your imaging system measures. This model is computationally inverted to reconstruct the object under investigation.

Presenters and Abstracts: 
 

Bryce Bullock: Mode Resolved Protocol for Measuring the In-Plane Mode Temperatures in a 2D Ion Crystal in a Penning Trap

The Exploring Social Identities workshop is an hour long workshop designed for participants to recognize their own intersecting identities and those of others, while learning to be empathetic and open-minded to the experiences of others. This workshop will include in-depth conversations as well as tasty snacks. Hope to see you all there! 

The development of structured ultrafast laser sources is a key ingredient to advance our knowledge about the fundamental dynamics of electronic and spin processes in matter.

Ultracold magnetic atoms exhibit short-range contact interactions together with longrange
dipole-dipole interactions. The competition between these two interactions
gives rise to various quantum phases [1], where the usually dominant mean-field
interactions are small and the system is governed by quantum fluctuations [2].
In this talk, I will first report on the study of a supersolid state and its excitation
spectrum [3]. In such a state, two symmetries are spontaneously broken: the gauge

In the past decades, ultracold atomic gases revealed to be an ideal platform for simulating quantum phenomena thanks to the ability to tune the inter-particle interactions, the geometry of the system, and the possibility of adding complexity in a controlled way. Recently, ultracold gases made of magnetic atoms brought the discovery of exotic states of matter arising from long-range and anisotropic dipole-dipole interactions, such as liquid-like self-bound droplets and supersolid states [1].