A5068834781- Quantum Information and Cryptography
- Quantum Mechanics and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum optics and atomic interactions
- Neural Networks and Reservoir Computing
- Radiation Therapy and Dosimetry
- Semiconductor materials and devices
- Nuclear Physics and Applications
- Catalytic Processes in Materials Science
- Copper Interconnects and Reliability
- Molecular Communication and Nanonetworks
- Quantum Computing Algorithms and Architecture
- Atomic and Molecular Physics
- Semiconductor Lasers and Optical Devices
Duke University
2024-2025
UCLA Health
2019
Abstract Photonic interconnects between quantum processing nodes are likely the only way to achieve large-scale computers and networks. The bottleneck in such an architecture is interface well-isolated memories flying photons. We establish high-fidelity entanglement remotely separated trapped atomic qubit memories, mediated by photonic qubits stored timing of their pulses. Such time-bin encoding removes sensitivity polarization errors, enables long-distance communication, extensible with...
Photonic interconnects between quantum systems will play a central role in both scalable computing and networking. Entanglement of remote qubits via photons has been demonstrated many platforms; however, improving the rate entanglement generation be instrumental for integrating photonic links into modular computers. We present an ion trap system that highest reported free-space photon collection efficiency use pair in-vacuum aspheric lenses, each with numerical aperture 0.8, to couple 10(1)%...
We entangle two cotrapped atomic barium ion qubits by collecting single visible photons from each through in vacuo 0.8 NA objectives, interfering them an integrated fiber beam splitter and detecting coincidence. This projects the into entangled Bell state with observed fidelity lower bound of F>94%. also introduce ytterbium for sympathetic cooling to remove need recooling interruptions achieve a continuous entanglement rate 250 s^{-1}.
We entangle two co-trapped atomic barium ion qubits by collecting single visible photons from each through in-vacuo 0.8 NA objectives, interfering them an integrated fiber-beamsplitter and detecting in coincidence. This projects the into entangled Bell state with observed fidelity lower bound of F > 94%. also introduce ytterbium for sympathetic cooling to remove need recooling interruptions achieve a continuous entanglement rate 250 1/s.
As the semiconductor community continues scaling, area selective atomic layer deposition (ASD) offers potential to relax down stream processing steps by enabling self-aligned processes (e.g., vias). Otherwise, conventional means of lithography face increasingly difficult challenges such as patterning and overlay errors resolution improves. ASD can be achieved under a variety conditions, with use organic inhibiting materials, it exhibit some highest levels selectivity. However, structure...
Trapped ions are one of the leading platforms for quantum computation and networking, with long coherence times high fidelity qubit operation. We exploit these attributes to build a network use three trapped ion modules connected via photonic links. In each systems, we have different species as memory or communication qubits. Our newest module contains two NA=0.8 objectives, covering 20% solid angle photons emitted from ion, making it suitable middle node network. Photons collected chamber,...
Photonic interconnects between quantum processing nodes are likely the only way to achieve large-scale computers and networks. The bottleneck in such an architecture is interface well-isolated memories flying photons. We establish high-fidelity entanglement remotely separated trapped atomic qubit memories, mediated by photonic qubits stored timing of their pulses. Such time-bin encoding removes sensitivity polarization errors, enables long-distance communication, extensible with more than...
<title>Abstract</title> Photonic interconnects between quantum processing nodes are likely the only way to achieve large-scale computers and networks (1). The bottleneck in such an architecture is interface well-isolated memories flying photons. We establish high-fidelity entanglement remotely separated trapped atomic qubit (2–4), mediated by photonic qubits stored timing of their pulses (5). Such time-bin encoding removes sensitivity polarization errors, enables long-distance communication,...
Photonic interconnects between quantum systems will play a central role in both scalable computing and networking. Entanglement of remote qubits via photons has been demonstrated many platforms; however, improving the rate entanglement generation be instrumental for integrating photonic links into modular computers. We present an ion trap system that highest reported free-space photon collection efficiency use pair in-vacuum aspheric lenses, each with numerical aperture 0.8, to couple 10%...