A5065820612- Quantum Information and Cryptography
- Diamond and Carbon-based Materials Research
- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Advanced Fiber Laser Technologies
- Semiconductor Quantum Structures and Devices
- Quantum optics and atomic interactions
- Quantum and electron transport phenomena
- Quantum Computing Algorithms and Architecture
- Mechanical and Optical Resonators
- Metal and Thin Film Mechanics
- Metamaterials and Metasurfaces Applications
- Force Microscopy Techniques and Applications
- Semiconductor materials and devices
- Quantum Dots Synthesis And Properties
- Photonic Crystals and Applications
- Laser-Matter Interactions and Applications
- Perovskite Materials and Applications
- Semiconductor Lasers and Optical Devices
- Organic Light-Emitting Diodes Research
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Optical Imaging Technologies
- Optical Network Technologies
- Crystallization and Solubility Studies
- Graphene research and applications
China Jiliang University
2020-2024
Beihang University
2024
Nanjing University of Aeronautics and Astronautics
2020-2024
Beijing Information Science & Technology University
2024
Joint Institute for Laboratory Astrophysics
2020-2023
University of Colorado Boulder
2020-2023
University of Nebraska–Lincoln
2022-2023
University of Dayton
2019-2022
Stanford University
2016-2021
Munich Center for Quantum Science and Technology
2021
High-quality sources of single photons are paramount importance for quantum communication, sensing and metrology. To these ends, resonantly excited two-level systems based on self-assembled dots have recently generated widespread interest. Nevertheless, we shown that systems, emission a photon during the presence excitation laser pulse subsequent re-excitation results in degradation obtainable single-photon purity. Here, demonstrate generating from with scheme two-photon biexciton strongly...
Quantum emitters are an integral component for a broad range of quantum technologies, including communication, repeaters, and linear optical computation. Solid-state color centers promising candidates scalable optics due to their long coherence time small inhomogeneous broadening. However, once excited, often decay through phonon-assisted processes, limiting the efficiency single-photon generation photon-mediated entanglement generation. Herein, we demonstrate strong enhancement spontaneous...
Single-photon switches and transistors generate strong photon-photon interactions that are essential for quantum circuits networks. However, to deterministically control an optical signal with a single photon requires memory, which have been lacking in solid-state platform. We realize single-photon switch transistor enabled by memory. Our device consists of semiconductor spin qubit strongly coupled nanophotonic cavity. The enables gate field containing up average 27.7 photons, switching time...
Just as classical information technology rests on a foundation built of interconnected information-processing systems, quantum (QIT) must do the same. A critical component such systems is interconnect, device or process that allows transfer between disparate physical media, for example, semiconductor electronics, individual atoms, light pulses in optical fiber, microwave fields. While interconnects have been well engineered decades realm technology, (QuICs) present special challenges, they...
Abstract 3D holography capable of reproducing all necessary visual cues is considered the most promising route to present photorealistic images. Three elements involving computer‐generated hologram (CGH) algorithms, carriers, and optical systems are prerequisites create high‐quality holographic displays for holography. Especially, carrier directly determines display capability design high space‐bandwidth‐product (SBP) systems. Currently, two categories i.e., spatial light modulators (SLM)...
Abstract Diamond hosts optically active color centers with great promise in quantum computation, networking, and sensing. Realization of such applications is contingent upon the integration into photonic circuits. However, current diamond optics experiments are restricted to single devices few emitters because fabrication constraints limit device functionalities, thus precluding center integrated In this work, we utilize inverse design methods overcome cutting-edge nanofabrication fabricate...
Abstract The progress in integration of nanodiamond with photonic devices is analyzed the light quantum optical applications. Nanodiamonds host a variety optically active defects, called color centers, which provide rich ground for engineering. Theoretical introduction describing and matter interaction between modes emitter presented, including role Debye–Waller factor typical center emission. synthesis diamond nanoparticles discussed an overview methods leading to experimentally realized...
Group-IV color centers in diamond have garnered great interest for their potential as optically active solid-state spin qubits. Future utilization of such emitters requires the development precise site-controlled emitter generation techniques that are compatible with high-quality nanophotonic devices. This task is more challenging large group-IV impurity atoms, which otherwise promising because predicted long coherence times without a dilution refrigerator. For example, when applied to...
Color centers in diamond have attracted much interest as candidates for optically active, solid-state quantum bits. Of particular are inversion-symmetric color based on group-IV impurities because they emit strongly into their zero-phonon lines and insensitive to electric field noise first order. Early studies of the negatively-charged tin-vacancy (SnV$^{-}$) center found SnV$^{-}$ be a promising candidate: it has high efficiency, emits its lines, is expected long $T_2$ spin coherence time...
Abstract The ability to shape photon emission facilitates strong photon-mediated interactions between disparate physical systems, thereby enabling applications in quantum information processing, simulation and communication. Spectral control solid state platforms such as color centers, rare earth ions, dots is particularly attractive for realizing on-chip. Here we propose the use of frequency-modulated optical transitions spectral engineering single emission. Using a scattering-matrix...
Integrating solid-state quantum emitters with photonic circuits is essential for realizing large-scale processors. Negatively charged tin-vacancy (SnV$^-$) centers in diamond have emerged as promising candidates because of their excellent optical and spin properties including narrow-linewidth emission long coherence times. SnV$^-$ need to be incorporated waveguides efficient on-chip routing the photons they generate. However, such integration has yet realized. In this Letter, we demonstrate...
[Fe(Htrz)2(trz)](BF4) (Fe-triazole) spin crossover molecules show thermal, electrical, and optical switching between high (HS) low (LS) states, making them promising candidates for molecular spintronics. The LS HS transitions originate from the electronic configurations of Fe(II) are considered to be diamagnetic paramagnetic, respectively. state has six paired electrons in ground states with no interaction magnetic field a behavior is usually observed. While bulk properties Fe-triazole...
We demonstrate cavity-enhanced Raman emission from a single atomic defect in solid. Our platform is silicon-vacancy center diamond coupled with monolithic photonic crystal cavity. The cavity enables an unprecedented frequency tuning range of the (100 GHz) that significantly exceeds spectral inhomogeneity centers nanostructures. also show selectively suppresses phonon-induced spontaneous degrades efficiency photon generation. results pave way towards photon-mediated many-body interactions...
Quantum dot light-emitting diodes (QLEDs) are increasingly being recognized as next-generation display technology, owing to their wide color gamut, high saturation levels, and low energy consumption. However, the primary challenge in QLED fabrication lies precisely depositing these inorganic quantum (QD) nanoparticles over a large area multiple times. Nowadays, solution processes such inkjet printing screen have been employed address challenges; however, they still some trade-offs between...
We demonstrate reversible strain-tuning of a quantum dot strongly coupled to photonic crystal cavity. observe an average redshift 0.45 nm for dots located inside the cavity membrane, achieved with electric field 15 kV/cm applied piezo-electric actuator. Using this technique, we ability tune into resonance in strong coupling regime, resulting clear anti-crossing. The bare is less sensitive strain than and shifts by only 0.078 at maximum field.
A photonic cluster state with a tree-type entanglement structure constitutes an efficient resource for quantum error correction of photon loss. But the generation tree arbitrary size is notoriously difficult. Here, we propose protocol to deterministically generate states by using only single emitter. Photonic established through both emission and rescattering from same emitter, enabling fast resource-efficient generation. The can also be extended more general entangled states.
We significantly enhance the simulation accuracy of initial Trotter circuits for Hamiltonian quantum systems by integrating first-order Riemannian optimization with tensor network methods. Unlike previous approaches, our method imposes no symmetry assumptions, such as translational invariance, on systems. This technique is scalable to large through use a matrix product operator representation reference time evolution propagator. Our routine applied various spin chains and fermionic systems,...
Arrays of identical and individually addressable qubits lay the foundation for creation scalable quantum hardware such as processors repeaters.Silicon vacancy centers in diamond (SiV -) offer excellent physical properties low inhomogeneous broadening, fast photon emission, a large Debye--Waller factor, while possibility all--optical ultrafast manipulation techniques to extend spin coherence times make them very promising candidates qubits.Here, we have developed arrays nanopillars containing...