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The realization of an efficient quantum optical interface for multi-qubit systems is an outstanding challenge in science and engineering. We demonstrate a method for interfacing neutral atom arrays with optical photons. In our approach, atomic qubits trapped in individually controlled optical tweezers are moved in and out of the near-field of a nanofabricated photonic crystal cavity. With this platform, we demonstrate full quantum control, efficient quantum non-destructive readout, and entanglement of atom pairs strongly coupled to the cavity. By encoding the qubits into long-lived states and employing dynamical decoupling, the entangled state is verified in free space after being transported away from the cavity. The combination of a compact, integrated optical link and entanglement transport paves the way for quantum networking with neutral atom quantum processors.
Optical waveguides in the form of glass fibers are the backbone of global telecommunication networks. In such optical fibers, the light is guided over long distances by continuous total internal reflection which occurs at the interface between the fi
In analogy to transistors in classical electronic circuits, a quantum optical switch is an important element of quantum circuits and quantum networks. Operated at the fundamental limit where a single quantum of light or matter controls another field
We propose a nanophotonic platform for topological quantum optics. Our system is composed of a two-dimensional lattice of non-linear quantum emitters with optical transitions embedded in a photonic crystal slab. The emitters interact through the guid
Results from higher order mean field calculations of light interacting with atom arrays are presented for calculations of one- and two-time expectation values. The atoms are approximated as two-levels and are fixed in space. Calculations were perform
Conventional information processors freely convert information between different physical carriers to process, store, or transmit information. It seems plausible that quantum information will also be held by different physical carriers in application