A5087597786- Quantum Information and Cryptography
- Quantum optics and atomic interactions
- Quantum Computing Algorithms and Architecture
- Coastal and Marine Dynamics
- Quantum Mechanics and Applications
- Coastal wetland ecosystem dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum and electron transport phenomena
University of Science and Technology of China
2019-2024
Hefei National Center for Physical Sciences at Nanoscale
2022-2024
Quantum internet gives the promise of getting all quantum resources connected, and it will enable applications far beyond a localized scenario. A prototype is network memories that are entangled well separated. In this Letter, we report establishment postselected entanglement between two atomic physically separated by 12.5 km directly. We create atom-photon in one node send photon to second for storage via electromagnetically induced transparency. harness low-loss transmission through...
We study the feasibility of meaningful proof-of-principle demonstrations several quantum repeater protocols with photon (single-photon and photon-pair) sources atomic-ensemble based memories. take into account non-unit memory efficiencies that decay exponentially time, which complicates calculation rates. discuss implementations on dots, parametric down-conversion, rare-earth-ion doped crystals, Rydberg atoms. Our results provide guidance for near-term implementation long-distance...
Entanglement between a single photon and matter qubit is an indispensable resource for quantum repeater networks. With atomic ensembles, the entanglement creation probability typically very low to inhibit high-order events. In this paper, we propose experimentally realize scheme which creates atom-photon with intrinsic efficiency of 50%. We make use Rydberg blockade generate two collective excitations, lying in separate internal states. By introducing momentum degree freedom interfering them...
In an atomic ensemble, quantum information is typically carried as single collective excitations. It very advantageous if the creation of excitations efficient and robust. A Rydberg blockade enables deterministic via a Rabi oscillation by precisely controlling pulse area, being sensitive to many experimental parameters. this paper, we implement adiabatic rapid passage technique excitation process in mesoscopic ensemble. We make use two-photon scheme with intermediate state off-resonant sweep...