Ultraviolet Laser System for Quantum Many-Body Physics with Rydberg-Dressed Atoms
Abstract
A high-power, narrow-linewidth ultraviolet laser system will be employed to induce long-rangee interactions among laser-cooled atoms. A primary purpose is to enable quantum simulations of frustrated magnets, ranging from disordered systems of interest for the study of quantum glasses to lattice spin models in triangular, honeycomb, and Kagome geometries. We will generate the requisite magnetic interactions by using light of 320-nm wavelength to off-resonantly couple two ground hyperfine states of cesium to highly polarizable Rydberg states. The resulting pair of Rydberg-dressed ground states, which form the effective spin degree of freedom for simulations, will acquire tunable interactions extending over a range of several microns. The commercial laser system enabling the Rydberg dressing outputs 150 mW of single-mode 320-nm light, obtained via two stages of resonant frequency doubling seeded by the amplified output of a 1280-nm diode laser. By electro-optic modulation of the fundamental radiation, it will be possible to generate two output frequencies, separated by 9 GHz, for independent dressing of two distinct hyperfine states. This capability is crucial for varying the isotropy of the spin-spin couplings to implement not only Ising but also Heisenberg spin models of interest for the study of topologically ordered many-body states. Besides enabling fundamental research in many-body quantum physics, the long-range interactions obtained by Rydberg dressing can be harnessed to generate specific entangled states with applications in quantum metrology. This abstract is approved for public release.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 11, 2018
- Source ID
- W911NF1610297
Entities
People
- Monika Schleier-Smith
Organizations
- Army Contracting Command
- Stanford University
- United States Army