The Lev Lab is a joint AMO & CM group that explores uncharted regimes of quantum matter by pushing the experimental state-of-the-art. At a billionth of a degree above absolute zero, laser-cooled and trapped gases of neutral atoms are among the coldest objects in the universe. We employ these quantum gases as versatile simulation testbeds and sensors for exploring novel quantum matter and their applications. Our recent projects focus on:
• Quantum neural network computing and quantum spin glass using quantum gas multimode cavity QED
-The first optical lattice with sound has been created, opening up new avenues for quantum simulation
-We have theoritically descibed how a confocal cavity QED neural network can enhance associative memory recall and storage capacity
-We realized a versatile set of novel photon-mediated interactions among atoms and dynamical spin-orbit coupling
-Read more about the confocal cavity QED neural network and optical lattice with phonon modes.
• 1D dipolar quantum gases of the most magnetic atom, dysprosium, to study quantum nonequilibrium physics
-We discovered novel “quantum many-body scar states” and made a dipolar quantum Newton’s cradle
-Read more about our quantum many-body scar states and the dipolar quantum Newton’s cradle.
• Imaging transport in condensed matter materials with a BEC using our novel Scanning Quantum CRyogentic Atom Microscope (SQCRAMscope)
-We took the first local images of electron nematic transport in iron-based high-Tc superconductors
-Read more about the SQCRAMscope and our study of electron nematics.
Honors & Awards
See here for complete list.
B. P. Marsh, Y. Guo, R. M. Kroeze, S. Gopalakrishnan, S. Ganguli, J. Keeling, and B. L. Lev
Enhancing associative memory recall and storage capacity using confocal cavity QED
Physical Review X 11, 021048 (2021).
W. Kao, K.-Y. Li, K.-Y. Lin, S. Gopalakrishnan, and B. L. Lev
Topological pumping of a 1D dipolar gas into strongly correlated prethermal states
Science 371, 296 (2021). pdf & SM
Featured in Stanford News: Stanford physicists find new state of matter in a one-dimensional quantum gas pdf
F. Yang, S. F. Taylor, S. D. Edkins, J. Palmstrom, I. R. Fisher, and B. L. Lev
Nematic Transitions in Iron-Pnictide Superconductors Imaged with a Quantum Gas
Nature Physics 16, 514 (2020). pdf
Featured in News & Views in Nature Physcis 16, 506 by James Analytis: "Cooking with quantum gas" pdf
Featured in Phys.org in article by Ingrid Fadelli: "Imaging nematic transitions in iron pnictide superconductors" pdf
Y. Guo, R. M. Kroeze, V. D. Vaidya, J. Keeling, and B. L. Lev
Sign-changing photon-mediated atom interactions in multimode cavity QED
Physical Review Letters 122, 193601 (2019). pdf
Selected for Editors' Suggestion
Featured in Physics Synopsis: A Step Toward Simulating Spin Glasses. pdf
Y. Tang, W. Kao, K.-Y. Li, S. Seo, K. Mallayya, M. Rigol, S. Gopalakrishnan, and B. L. Lev
Thermalization near integrability in a dipolar quantum Newton's cradle
Physical Review X 8, 021030 (2018).
See Editors' Choice Watching magnetic atoms thermalize in Science
See News: Quantum Physics A tiny version of this physics toy is revealing quantum secrets in ScienceNews
See Synopsis Pathway to Quantum Thermalization in APS Physics
See Research Highlight Towards thermalization in Nature Physics
See Article Toy inspires experiment on behavior of quantum systems in Stanford News
V. D. Vaidya, Y. Guo, R. M. Kroeze, K. E. Ballantine, A. J. Kollár, J. Keeling, and B. L. Lev
Tunable-range, photon-mediated atomic interactions in multimode cavity QED
Physical Review X 8, 011002 (2018). pdf
Selected for a Viewpoint in APS Physics:
H. Türeci, A Multimode Dial for Interatomic Interactions, pdf
S. Gopalakrishnan, B. L. Lev, and P. Goldbart
Emergent crystallinity and frustration with Bose-Einstein condensates in multimode cavities
Nature Physics 5, 845 - 850 (2009).
Nature Physics News and Views article by Helmut Ritsch.