Physical review. A/Physical review, A, Journal Year: 2025, Volume and Issue: 111(2)
Published: Feb. 11, 2025
Language: Английский
Physical review. A/Physical review, A, Journal Year: 2023, Volume and Issue: 108(4)
Published: Oct. 24, 2023
The authors offer an overview of fundamental concepts in topological photonics and a categorization recent advancements this growing field across linear, nonlinear, quantum regimes. They provide detailed exploration future directions, enduring challenges, elusive questions surrounding the application ideas systems.
Language: Английский
Citations
20
Physical Review Letters, Journal Year: 2023, Volume and Issue: 131(7)
Published: Aug. 14, 2023
Waveguide QED simulators are analog quantum made by emitters interacting with one-dimensional photonic band gap materials. One of their remarkable features is that they can be used to engineer tunable-range emitter interactions. Here, we demonstrate how these interactions a resource develop more efficient variational algorithms for certain problems. In particular, illustrate power in creating wave function Ansätze capture accurately the ground state critical spin models (XXZ and Ising) fewer gates optimization parameters than other based on nearest-neighbor or infinite-range entangling gates. Finally, study potential advantages waveguide presence noise. Overall, results evidence using interaction range as parameter place promising platform algorithms.
Language: Английский
Citations
17
Physical Review Letters, Journal Year: 2024, Volume and Issue: 132(17)
Published: April 25, 2024
Dimensionality plays a crucial role in long-range dipole-dipole interactions (DDIs). We demonstrate that resonant nanophotonic structure modifies the apparent dimensionality an interacting ensemble of emitters, as revealed by population decay dynamics. Our measurements on dense quantum emitters with DDIs reveal effective reduction to $\overline{d}=2.20(12)$, despite being distributed 3D. This contrasts homogeneous environment, where dimension is $\overline{d}=3.00$. work presents promising avenue manipulate emitters.
Language: Английский
Citations
7
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: July 10, 2024
The construction of a large-scale quantum internet requires repeaters containing multiple entangled photon sources with identical wavelengths. Semiconductor dots can generate pairs deterministically high fidelity. However, realizing wavelength-matched quantum-dot faces two difficulties: the non-uniformity emission wavelength and exciton fine-structure splitting induced fidelity reduction. Typically, these factors are not independently tunable, making it challenging to achieve simultaneous improvement. In this work, we demonstrate wavelength-tunable based on droplet-etched GaAs through combined use AC quantum-confined Stark effects. be tuned by ~1 meV while preserving an entanglement f exceeding 0.955(1) in entire tuning range. Based hybrid scheme, finally > 0.919(3), paving way towards robust scalable on-demand for integrated optical circuits.
Language: Английский
Citations
7
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Feb. 5, 2024
Abstract When an inverted ensemble of atoms is tightly packed on the scale its emission wavelength or when are collectively strongly coupled to a single cavity mode, their dipoles will align and decay rapidly via superradiant burst. However, spread-out dipole phase distribution theory predicts required minimum threshold atomic excitation for superradiance occur. Here we experimentally confirm this predicted narrow optical transition exciting transversely show how take advantage resulting sub- transition. A π /2-pulse places in subradiant state, protected from collective decay, which exploit during free evolution period corresponding Ramsey pulse sequence. The final excited state population read out after second /2-pulse, with minimal heating allows multiple sequences within one experimental cycle. Our scheme innovative approach readout characterized by speed, simplicity, highly directional signal photons. It demonstrates potential sensors using effects cavity-coupled quantum emitters.
Language: Английский
Citations
5
Physical review. A/Physical review, A, Journal Year: 2024, Volume and Issue: 109(2)
Published: Feb. 5, 2024
Motivated by recent cold-atom realizations of matter-wave waveguide QED, we study simple fermionic impurity models and discuss analogs several paradigmatic phenomena in quantum optics, including formation nontrivial bound states, (matter-wave) emission dynamics, collective dissipation. For a single impurity, highlight interesting ground-state features, focusing particular on real-space signatures an emergent length scale associated with screening cloud. We also present non-Markovian many-body effects the quench dynamics single- multiple-impurity systems, fractional decay around Fermi level multiexcitation population trapping due to states continuum. Published American Physical Society 2024
Language: Английский
Citations
5
Physical Review Research, Journal Year: 2024, Volume and Issue: 6(2)
Published: June 20, 2024
Directionality in integrated quantum photonics has emerged as a promising route towards achieving scalable technologies with nonlinearities at the single-photon level. Topological photonic waveguides have been proposed novel approach to harnessing such directional light-matter interactions on-chip. However, uncertainties remain regarding strength of coupling embedded emitters topological comparison conventional line defect waveguides. In this work we present an investigation range using combination experimental, theoretical, and numerical analyses. We quantitatively characterize position dependence on several benchmark their performance against conclude that underperform waveguides, casting optics credentials into doubt. To demonstrate is not question maturity field; show state-of-the-art inverse design methods, while capable improving emission these still place them significantly behind operation (glide-plane) crystal waveguide. Our results conclusions pave way implementation predicted nonlinear effects Published by American Physical Society 2024
Language: Английский
Citations
5
Physical Review Applied, Journal Year: 2023, Volume and Issue: 19(6)
Published: June 27, 2023
Scaling up single-photon sources directly on a chip is fundamental requirement for realizing quantum information protocols that demand scalable, integrated photonic qubits. Integrating multiple emitters in circuit has encountered major roadblocks wavelength disparity and the lack of compact excitation method. The authors demonstrate simultaneous two dots same independent control emitters' wavelengths, enabling two-photon interference. Spectral diffusion not as detrimental to interference process anticipated. These results address longstanding challenge photonics.
Language: Английский
Citations
12
The Journal of Chemical Physics, Journal Year: 2024, Volume and Issue: 160(11)
Published: March 19, 2024
Cavity quantum electrodynamics (CQED) and its extensions are widely used for the description of exciton-polariton systems. However, models based on CQED vary greatly within different contexts. One most significant discrepancies among these is whether one should include direct intermolecular interactions in Hamiltonian. To answer this question, article, we derive an effective dissipative model including free-space dipole-dipole (CQED-DDI) from a microscopic Hamiltonian macroscopic electrodynamics. Dissipative CQED-DDI successfully captures nature vacuum fluctuations dielectric media separates them into effects dielectric-induced effects. The former spontaneous emissions, dephasings, free space; latter photonic losses due to media. We apply investigate dynamics (the population molecules above plasmonic surface) compare results with those methods proposed by several previous studies. find that crucial element when employing CQED-like study systems involving multiple molecules.
Language: Английский
Citations
4
Nature Photonics, Journal Year: 2024, Volume and Issue: 18(9), P. 967 - 974
Published: May 22, 2024
Language: Английский
Citations
4