A5052167600- Quantum Information and Cryptography
- Quantum and electron transport phenomena
- Semiconductor Quantum Structures and Devices
- Quantum optics and atomic interactions
- Photonic and Optical Devices
- Quantum Computing Algorithms and Architecture
- Mechanical and Optical Resonators
- Quantum Mechanics and Applications
- Semiconductor Lasers and Optical Devices
- Neural Networks and Reservoir Computing
- Topological Materials and Phenomena
- Advancements in Semiconductor Devices and Circuit Design
- Additive Manufacturing and 3D Printing Technologies
- Microwave Engineering and Waveguides
- Semiconductor materials and devices
- Photoacoustic and Ultrasonic Imaging
- Microwave Imaging and Scattering Analysis
- Random lasers and scattering media
- Orbital Angular Momentum in Optics
- Antenna Design and Analysis
- Ultrasonics and Acoustic Wave Propagation
- Photopolymerization techniques and applications
- Magneto-Optical Properties and Applications
- Photonic Crystals and Applications
- Nonlinear Dynamics and Pattern Formation
Southern University of Science and Technology
2022-2025
Wenzhou Medical University
2025
Dongyang People's Hospital
2025
Shandong Provincial Hospital
2025
Technology and Engineering Center for Space Utilization
2024
Chinese Academy of Sciences
1995-2024
Chengdu University of Information Technology
2014-2024
Soochow University
2024
Centre for Quantum Computation and Communication Technology
2017-2023
UNSW Sydney
2017-2023
Scalable photonic quantum technologies require on-demand single-photon sources with simultaneously high levels of purity, indistinguishability, and efficiency. These key features, however, have only been demonstrated separately in previous experiments. Here, by s-shell pulsed resonant excitation a Purcell-enhanced dot-micropillar system, we deterministically generate resonance fluorescence single photons which, at pi pulse excitation, an extraction efficiency 66%, purity 99.1%, photon...
An outstanding goal in quantum optics and scalable photonic technology is to develop a source that each time emits one only entangled photon pair with simultaneously high entanglement fidelity, extraction efficiency, indistinguishability. By coherent two-photon excitation of single InGaAs dot coupled circular Bragg grating bullseye cavity broadband Purcell factor up 11.3, we generate pairs state fidelity 0.90(1), generation rate 0.59(1), efficiency 0.62(6), indistinguishability 0.90(1)...
By pulsed $s$-shell resonant excitation of a single quantum dot-micropillar system, we generate long streams 1000 near-transform-limited photons with high mutual indistinguishability. The Hong-Ou-Mandel interference two is measured as function their emission time separation varying from 13 ns to $14.7\text{ }\text{ }\ensuremath{\mu}\mathrm{s}$, where the visibility slightly drops 95.9(2)% plateau 92.1(5)% through slow dephasing process occurring at scale $0.7\text{...
Abstract The realization of controllable fermionic quantum systems via simulation is instrumental for exploring many the most intriguing effects in condensed-matter physics 1–3 . Semiconductor dots are particularly promising as they can be engineered to achieve strong correlations. However, although Fermi–Hubbard model 4 and Nagaoka ferromagnetism 5 have been reported before, simplest one-dimensional strongly correlated topological matter, many-body Su–Schrieffer–Heeger (SSH) 6–11 , has so...
Quantum computers have made extraordinary progress over the past decade, and significant milestones been achieved along path of pursuing universal fault-tolerant quantum computers. advantage, tipping point heralding era, has accomplished with several waves breakthroughs. hardware become more integrated architectural compared to its toddler days. The controlling precision various physical systems is pushed beyond threshold. Meanwhile, computation research established a new norm by embracing...
Quantum error correction with erasure qubits promises significant advantages over standard due to favorable thresholds for errors. To realize this advantage in practice requires a qubit which nearly all errors are such errors, and the ability check without dephasing qubit. We demonstrate that “dual-rail qubit” consisting of pair resonantly coupled transmons can form highly coherent qubit, where transmon <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"...
Boson sampling is a problem strongly believed to be intractable for classical computers, but can naturally solved on specialized photonic quantum simulator. Here, we implement the first time-bin-encoded boson using highly indistinguishable ($\ensuremath{\sim}94%$) single-photon source based single quantum-dot-micropillar device. The protocol requires only one source, two detectors, and loop-based interferometer an arbitrary number of photons. pulse train time-bin encoded deterministically...
Single photons are attractive candidates of quantum bits (qubits) for computation and the best messengers in networks. Future scalable, fault-tolerant photonic technologies demand both stringently high levels photon indistinguishability generation efficiency. Here, we demonstrate deterministic robust pulsed resonance fluorescence single from a semiconductor dot using adiabatic rapid passage, method against fluctuation driving pulse area dipole moments solid-state emitters. The emitted...
Periodically driven systems have displayed a variety of fascinating phenomena without analogies in static systems, which enrich the classification quantum phases matter and stimulate wide range research interests. Here, we employ discrete-time walks to investigate nontrivial topological effect unique two-dimensional periodically system: chiral edge states can exist at interface Floquet insulators whose Chern numbers vanish. Thanks resource-saving flexible fiber-loop architecture, realize...
We report an experiment to test quantum interference, entanglement and nonlocality using two dissimilar photon sources, the Sun a semiconductor dot on Earth, which are separated by 150 million kilometers. By making otherwise vastly distinct photons indistinguishable all degrees of freedom, we observe time-resolved two-photon interference with raw visibility 0.796(17), well above 0.5 classical limit, providing first evidence nature thermal light. Further, no common history, demonstrate...
Electron spins in silicon offer a competitive, scalable quantum-computing platform with excellent single-qubit properties. However, the two-qubit gate fidelities achieved so far have fallen short of 99% threshold required for large-scale error-corrected quantum computing architectures. In past few years, there has been growing realization that critical obstacle meeting this semiconductor qubits is charge noise arising from qubit environment. work, notably low level S0 = 0.0088 ± 0.0004 μeV2...
This Letter reports all-optically tunable and highly indistinguishable single Raman photons from a driven quantum dot spin. The frequency, linewidth, lifetime of the are by varying driving field power detuning. Under continuous-wave excitation, subnatural linewidth off-resonant scattering show an indistinguishability 0.98(3). $\ensuremath{\pi}$ pulse spin- time-tagged fluorescence almost vanishing multiphoton emission probability 0.01(2) two-photon interference visibility 0.95(3). Lastly,...
We investigate temperature-dependent resonance fluorescence spectra obtained from a single self-assembled quantum dot. A decrease of the Mollow triplet sideband splitting is observed with increasing temperature, an effect we attribute to phonon-induced renormalization driven dot Rabi frequency. also present first evidence for nonperturbative regime phonon coupling, in which expected linear increase linewidth as function temperature canceled by corresponding reduction These results indicate...
A bichromatic laser can dynamically control the resonant optical emission of an InGaAs quantum dot demonstrating complete cancellation spontaneous spectral lines from for first time.
Abstract Donor spins in silicon provide a promising material platform for large scale quantum computing. Excellent electron spin coherence times of $${T}_{2}^{* }=268$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mrow> <mml:mi>T</mml:mi> </mml:mrow> <mml:mn>2</mml:mn> <mml:mo>*</mml:mo> </mml:msubsup> <mml:mo>=</mml:mo> <mml:mn>268</mml:mn> </mml:math> μ s with fidelities 99.9% have been demonstrated isolated phosphorus donors isotopically pure 28 Si, where...