Events Archive

Princeton Quantum Colloquium: "Many-body physics in the NISQ era": Professor Vedika Khemani (Stanford)
Mon, Nov 8, 2021, 12:30 pm12:30 pm


A confluence of developments across a range of subfields --- particularly experimental advances in building Noisy Intermediate-Scale Quantum (NISQ) devices --- have opened up a vast new territory of studying many-body phenomena in…

Dicke Atomic Seminar | Daniel Thrasher, U of Wisconsin | to be announced | Jadwin 303
Thu, Dec 12, 2019, 3:00 pm3:00 pm
Dicke-Atomic | Zoe Yan, MIT | "From strongly interacting Bose-Fermi mixtures to ultracold dipolar molecules" | Jadwin 303
Tue, Dec 10, 2019, 2:30 pm2:30 pm

Atoms and molecules in the ultracold regime have emerged as promising platforms for quantum simulation of strongly-correlated matter.  In this talk, I will describe recent progress on two fronts to study quantum many-body physics with ultracold gases.  First, using ultracold fermionic atoms…

Atomic Physics Seminar | Daniel Thrasher. U of Wis., Madison | "Comagnetometry with transversely polarized 129Xe and 131Xe" | Jadwin 233
Fri, Oct 18, 2019, 12:00 pm12:00 pm

Spin-exchange pumped noble gas comagnetometers consist of two or more co-located ensembles of noble gas atoms whose nuclei are polarized by spin-exchange collisions with polarized alkali atoms. Such devices been used to place upper bounds on fifth forces and Lorentz violations and for the measurement of inertial…

Atomic Physics Seminar | Tao Wang, Berkeley | Title to be announced | Jadwin 303
Mon, Jul 29, 2019, 2:00 pm2:00 pm

Abstract to be announced.

Atomic Physics Seminar | Tao Wang, Berkeley | "Ultrahigh Sensitivity Magnetometry and its Applications to Dark Matter Researches" | Jadwin 303
Mon, Jul 29, 2019, 2:00 pm2:00 pm

Dark  matter  and  dark  energy are  the  most  abundant  yet  mysterious  substances  in  the  Universe. Axions  and  axion-like  particles (ALP) have emerged as theoretically well-motivated dark-matter candidates. Ultrahigh sensitivity magnetometers play important roles in dark matter searches. Here we demonstrate…

Exploring synthetic quantum matter in superconducting circuits
Mon, Jan 21, 2019, 1:00 pm1:00 pm

Superconducting circuits have emerged as a competitive platform for quantum computation, satisfying the challenges of controllability, long coherence and strong interactions. Here we apply this toolbox to a different problem: the exploration of strongly correlated quantum materials made of microwave photons. We develop a versatile recipe that…

Atomic Physics Seminar | Nathan Schine, UChicago | "Quantum Hall Physics with Photons"
Thu, Jan 17, 2019, 3:00 pm3:00 pm

Topological materials have recently become a distinct focus in condensed matter physics, appearing famously in the quantum Hall effect and topological insulators. In these materials, certain essential properties are governed by ‘topological invariants,’ quantities insensitive to local perturbation or manipulation. As such, understanding and…

Polarized neutrons for fundamental physics at China Spallation Neutron Source
Wed, Dec 19, 2018, 1:30 pm1:30 pm

In this talk I will give a brief introduction to polarized neutrons and their applications in fundamental measurements, followed by an introduction to CSNS, and several potential fundamental measurements that are under consideration to take place at CSNS.

Atomic Physics Seminar | Luigi De Marco, U of Colorado | "Fermi Degenerate Polar Molecules: Controlling Chemistry with Quantum Statistics" | Jadwin 303
Mon, Aug 27, 2018, 1:00 pm1:00 pm

Ultracold polar molecules have long been heralded as ideal candidates for exploring a plethora of exotic phenomena in molecular and many-body physics. These include the study of chemistry in the quantum regime, the emulation of strongly-interacting spin models, the production of topological phases, and the exploration of fundamental symmetries…

Atomic Physics Seminar, Vito Giovanni Lucivero, ICFO, "Quantum metrology with high density atomic vapors and squeezed states of light"
Fri, May 13, 2016, 12:00 pm1:30 pm
Nowadays there is a considerable progress in optical magnetometry and spin-noise spectroscopy, which use magnetically-sensitive atomic ensembles and optical read-out, approaching fundamental limits. A major outstanding question is whether squeezed light can improve the sensitivity of such atomic sensors under optimal conditions, typically in a…
Atomic Physics Seminar, Ashok Ajoy, MIT, “Quantum assisted metrology with Nitrogen Vacancy centers in diamond”
Thu, Jan 7, 2016, 2:00 pm3:30 pm
In the past few years, the development of novel quantum sensors based on the Nitrogen Vacancy (NV) center in diamond has shown tremendous promise for high sensitivity metrology at small length scales. In this talk, I will outline our efforts to use these sensors for high resolution nanoscale Magnetic Resonance Imaging (MRI) [1-3], specifically…
Atomic and Nuclear Seminar, Kevin Hickerson, UCLA
Fri, Jul 10, 2015, 12:30 pm1:30 pm
The LHC has helped complete the Standard Model; it has also left open some gaping holes. Among these are any prediction of dark matter, a sufficient source for the matter, and antimatter imbalance in the universe or an adequate explanation of neutrino mass. In this talk, I will describe experimental techniques that use beta decay at ultracold…
Atomic Physics Seminar, Richard Parker, U of Chicago, "First Measurement of the Atomic Electric Dipole Moment of 225Ra"
Fri, Mar 20, 2015, 12:00 pm1:30 pm
The radioactive radium-225 (225Ra) atom is a favorable system to search for a permanent electric dipole moment (EDM). Due to its strong nuclear octupole deformation and large atomic mass, 225Ra is particularly sensitive to interactions in the nuclear medium that violate both time-reversal symmetry and parity. We have developed a cold-atom…
Special Seminar - Tobias Tiecke, Harvard University, "Nanoscale cavity QED with a single trapped atom"
Wed, Mar 26, 2014, 2:00 pm3:00 pm
Hybrid quantum devices, in which dissimilar quantum systems are combined in order to attain qualities not available with either system alone, may enable far-reaching control in quantum measurement, sensing, and information processing. A paradigmatic example is trapped ultracold atoms, which offer excellent quantum coherent properties, coupled to…
Atomic Physics Seminar, Chenglin "Charles" Cao, "Searching for Perfect Fluids: Universal Quantum Viscosity in a Unitary Fermi Gas"
Fri, Jan 24, 2014, 12:00 pm1:30 pm
We measure the shear viscosity in a two-component Fermi gas of atoms, tuned to a broad s-wave Feshbach resonance. At resonance, the atoms strongly interact and exhibit universal behavior, where the equilibrium thermodynamic properties and the transport coefficients are universal functions of the density $n$ and temperature $T$. We determine the…
Atomic Physics Seminar, Mark Limes, "$^{129}$Xe Relaxation and Rabi Oscillations"
Fri, Jan 17, 2014, 12:00 pm1:30 pm
Several studies in experimental and theoretical magnetic resonance are presented. The longitudinal relaxation of solid $^{129}$Xe is shown to have an unexpected structural dependence from experiments that provide previously unattainable reproducibility; first-principles theories that attempt to describe the observed data are analyzed. Theoretical…
Dicke Fellowship Seminar, Merideth Frey, "Citius, Altius, Fortius – The Quest for Faster Imaging, Higher Resolution, and Stronger Signal in MRI . .
Thu, Dec 12, 2013, 3:00 pm4:30 pm
Magnetic resonance techniques have proven to be extremely useful in nearly every scientific discipline, from controlling spin dynamics in condensed matter physics to imaging diseased tissue in biomedical engineering. In the first part of my talk, I will discuss my doctoral work implementing a novel spin-control pulse sequence that overcame well…
Atomic Physics Seminar - Morgan Hedges, University of Calgary - "Progress Toward Ultra-Long Coherence Times for Rare-earth Ion Quantum Memory"
Fri, Oct 19, 2012, 12:30 pm1:30 pm
Rare-earth ions in the solid state are a prime candidate for quantum memory and other quantum information applications, due to their strongly shielded optical transitions. These same optical transitions allow for direct optical manipulation of nuclear-spin transitions. This is of interest for studying interactions in solids, as well as for…