73 citations · 437 across the 15 of their papers we have counts for
15 papers
Controlling light shifts in chip-scale atomic beam clocks
Alexander Staron, Mingwu Lu, Ruwan Senaratne +4
Chip-scale atomic beam clocks are being investigated to extend the range of clock stability achievable in low-power timing applications. Here, we demonstrate a centimeter-scale, Ra…
Wafer-Scale Micro-Knife Sealed Vacuum Cells for Quantum Devices
Megan Lauree Kelleher, Konrad Ziegler, Jeremy Robin +10
Advanced integration technologies greatly enhance the prospects and reliability of practical quantum sensors, atomic clocks, and quantum information technologies. The performance a…
Low Energy Excitations of a 1D Fermi Gas with Attractive Interactions
Aashish Kafle, Ruwan Senaratne, Danyel Cavazos-Cavazos +5
The low-energy excitations of a two-component repulsive Fermi gas confined to one dimension are linear dispersing spin- and charge-density waves whose respective propagation veloci…
Thermal disruption of a Luttinger liquid
Danyel Cavazos-Cavazos, Ruwan Senaratne, Aashish Kafle +1
The Tomonaga-Luttinger liquid (TLL) theory describes the low-energy excitations of strongly correlated one-dimensional (1D) fermions. In the past years, a number of studies have pr…
Spin-charge separation in a 1D Fermi gas with tunable interactions
Ruwan Senaratne, Danyel Cavazos-Cavazos, Sheng Wang +6
Ultracold atoms confined to periodic potentials have proven to be a powerful tool for quantum simulation of complex many-body systems. We confine fermions to one-dimension to reali…
Collisional loss of one-dimensional fermions near a -wave Feshbach resonance
Ya-Ting Chang, Ruwan Senaratne, Danyel Cavazos-Cavazos +1
We study collisional loss of a quasi-one-dimensional (1D) spin-polarized Fermi gas near a -wave Feshbach resonance in ultracold Li atoms. We measure the location of the -…
Phasonic Spectroscopy of a Quantum Gas in a Quasicrystalline Lattice
Shankari V. Rajagopal, Toshihiko Shimasaki, Peter Dotti +5
Phasonic degrees of freedom are unique to quasiperiodic structures, and play a central role in poorly-understood properties of quasicrystals from excitation spectra to wavefunction…
Methods for Preparing Quantum Gases of Lithium
Randall G. Hulet, Jason H. V. Nguyen, Ruwan Senaratne
Lithium is an important element in atomic quantum gas experiments because its interactions are highly tunable, due to broad Feshbach resonances and zero-crossings, and because it h…
Quantifying and controlling prethermal nonergodicity in interacting Floquet matter
Kevin Singh, Cora J. Fujiwara, Zachary A. Geiger +10
The use of periodic driving for synthesizing many-body quantum states depends crucially on the existence of a prethermal regime, which exhibits drive-tunable properties while fores…
Transport in Floquet-Bloch bands
C. J. Fujiwara, Kevin Singh, Zachary A. Geiger +4
We report Floquet band engineering of long-range transport and direct imaging of Floquet-Bloch bands in an amplitude-modulated optical lattice. In one variety of Floquet-Bloch band…
Observation and uses of position-space Bloch oscillations in an ultracold gas
Zachary A. Geiger, Kurt M. Fujiwara, Kevin Singh +8
We report the direct observation and characterization of position-space Bloch oscillations using an ultracold gas in a tilted optical lattice. While Bloch oscillations in momentum…
Experimental Realization of a Relativistic Harmonic Oscillator
Kurt M. Fujiwara, Zachary A. Geiger, Kevin Singh +5
We report the experimental study of a harmonic oscillator in the relativistic regime. The oscillator is composed of Bose-condensed lithium atoms in the third band of an optical lat…
Quantum Simulation of Ultrafast Dynamics Using Trapped Ultracold Atoms
Ruwan Senaratne, Shankari V. Rajagopal, Toshihiko Shimasaki +5
Ultrafast electronic dynamics are typically studied using pulsed lasers. We demonstrate a complementary experimental approach: quantum simulation of ultrafast dynamics using trappe…
Quantum Emulation of Extreme Non-equilibrium Phenomena with Trapped Atoms
Shankari V. Rajagopal, Kurt M. Fujiwara, Ruwan Senaratne +3
Ultracold atomic physics experiments offer a nearly ideal context for the investigation of quantum systems far from equilibrium. We describe three related emerging directions of re…
Effusive Atomic Oven Nozzle Design Using an Aligned Microcapillary Array
Ruwan Senaratne, Shankari V. Rajagopal, Zachary A. Geiger +3
We present a simple and inexpensive design for a multichannel effusive oven nozzle which provides improved atomic beam collimation and thus extended oven lifetimes. Using this desi…