Long-Range Quantum Magnetism in Atom-Nanophotonic Hybrid Lattices
Abstract
Understanding quantum and statistical behavior in a many-body system interacting underlong-range potentials can bring new insights to condensed matter physics and quantuminformation science. This research program will integrate state-of-the-art ultracold atomicphysics with proven nanophotonic technologies to assemble a hybrid quantum spinsystem, aiming to address a number of fundamental questions that cannot be answered bysolid state or atomic and molecular systems only.To realize long-range quantum spin models in this hybrid platform, individual atoms willbe cooled, trapped, and tightly confined near the surface of an ultrahigh-Q nanophotonicresonator, thus realizing strong, coherent interactions between single atoms and photonsin the resonator mode. In this system, atomic internal states will be treated as psuedospins,while strong and long-range interaction between a pair of distant spins can be mediatedby a photon propagating inside the nanophotonic resonator. We will employ quantumcontrol and global optical-addressing on an array of atomic spins to engineer pairwisetunable spin-spin interactions, thus opening new possibilities to study a large class ofquantum spin models under different range and strength of interaction parameters, andeven with an engineered topology. The resulting spin phases and dynamics can be closelymonitored by either a state-dependent atomic fluorescence imaging, or by probing thecoherence of photons leaking out of the resonator.We expect that this hybrid platform will also lead to new quantum applications. It mayhelp optimize the coupling strategy of a quantum network to efficiently transmit quantumstates between distant nodes.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 28, 2017
- Source ID
- FA95501710298
Entities
People
- Chen-Lung Hung
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Virginia