Collective super- and subradiant dynamics between distant optical quantum emitters

Science, Год журнала: 2023, Номер 379(6630), С. 389 - 393

Опубликована: Янв. 26, 2023

Photon emission is the hallmark of light-matter interaction and foundation photonic quantum science, enabling advanced sources for communication computing. Although single-emitter radiation can be tailored by environment, introduction multiple emitters extends this picture. A fundamental challenge, however, that radiative dipole-dipole coupling rapidly decays with spatial separation, typically within a fraction optical wavelength. We realize distant pairs solid-state embedded in nanophotonic waveguide. dynamically probe collective response identify both super- subradiant as well means to control dynamics proper excitation techniques. Our work constitutes foundational step toward multiemitter applications scalable quantum-information processing.

Язык: Английский

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Light–matter interactions in quantum nanophotonic devices

Nature Reviews Physics, Год журнала: 2024, Номер 6(3), С. 166 - 179

Опубликована: Янв. 25, 2024

Язык: Английский

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Sublinear Scaling in Non-Markovian Open Quantum Systems Simulations

Physical Review X, Год журнала: 2024, Номер 14(1)

Опубликована: Фев. 1, 2024

While several numerical techniques are available for predicting the dynamics of non-Markovian open quantum systems, most struggle with simulations very long memory and propagation times, e.g., due to superlinear scaling number time steps n. Here, we introduce a numerically exact algorithm calculate process tensors—compact representations environmental influences—which provides advantage over previous algorithms by leveraging self-similarity tensor networks that represent environment. It is applicable environments Gaussian statistics, such as spin-boson-type systems. Based on divide-and-conquer strategy, our approach requires only O(n log n) singular value decompositions infinite memory. Where can be truncated after nc steps, nominal O(nc log nc) found, which independent n. This improved enabled identifying tensors repeatable blocks. To demonstrate power utility approach, provide three examples. (1) We fluorescence spectra dot under both strong driving dot-phonon couplings, task requiring millions able perform in minutes. (2) efficiently find describing superradiance multiple emitters. (3) explore limits considering coherence decay strongly coupled The observed computation not necessarily proportional because matrix dimensions also depend steps. Nevertheless, quasilinear sublinear found practice wide range parameters. there instances where existing methods achieve comparable precalculating effective propagators time-independent or periodic system Hamiltonians, contain all information needed extract arbitrary multitime correlation functions when driven time-dependent Hamiltonians. present here significantly extends scope systems but it has fundamental implications simulation complexity network approaches. Published American Physical Society 2024

Язык: Английский

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Solid‐State Single‐Photon Sources: Recent Advances for Novel Quantum Materials

Advanced Functional Materials, Год журнала: 2024, Номер 34(30)

Опубликована: Апрель 1, 2024

Abstract In this review, the current landscape of emergent quantum materials for photonic applications is described. The review focuses on three specific solid‐state platforms: single emitters in monolayers transition metal dichalcogenides (TMDs), defects hexagonal boron nitride (hBN), and colloidal dots perovskites (PQDs). These platforms share a unique technological accessibility, enabling rapid implementation testbed applications, all while being verge becoming technologically mature enough first generation real‐world applications. begins with comprehensive overview state‐of‐the‐art relevant single‐photon sources solid‐state, introducing most important performance criteria experimental characterization techniques along way. Progress each novel then benchmarked against more established (yet complex) platforms, highlighting performance, material‐specific advantages, giving an outlook This will thus provide reader snapshot latest developments fast‐paced field including required concepts experiments to technology.

Язык: Английский

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Many-Body Superradiance and Dynamical Mirror Symmetry Breaking in Waveguide QED

Physical Review Letters, Год журнала: 2023, Номер 131(3)

Опубликована: Июль 20, 2023

The many-body decay of extended collections two-level systems remains an open problem. Here, we investigate whether array emitters coupled to a one-dimensional bath undergoes Dicke superradiance. This is process whereby completely inverted system becomes correlated via dissipation, leading the release all energy in form rapid photon burst. We derive minimal conditions for burst happen as function number emitters, chirality waveguide, and single-emitter optical depth, both ordered disordered ensembles. Many-body superradiance occurs because initial fluctuation that triggers emission amplified throughout process. In baths, this avalanchelike behavior leads spontaneous mirror symmetry breaking, with large shot-to-shot fluctuations photons emitted left right. Superradiant bursts may thus be smoking gun generation states exotic quantum statistics.

Язык: Английский

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Observation of Superradiant Bursts in a Cascaded Quantum System

Physical Review X, Год журнала: 2024, Номер 14(1)

Опубликована: Фев. 16, 2024

We experimentally investigate the collective radiative decay of a fully inverted ensemble two-level atoms for chiral, i.e., propagation direction-dependent light-matter coupling. Despite fundamentally different interaction Hamiltonian which has reduced symmetry compared to standard Dicke case superradiance, we do observe superradiant burst light. The occurs above threshold number atoms, and its peak power scales faster with than in free-space superradiance. measure first-order coherence distinguish two regimes, one dominated by induced during excitation process other governed vacuum fluctuations. Our results shed light on dynamics cascaded quantum many-body systems, systems each emitter is only driven radiated emitters that are upstream cascade. findings may turn out useful generating multiphoton Fock states as resource technologies. Published American Physical Society 2024

Язык: Английский

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Superradiant and subradiant states in lifetime-limited organic molecules through laser-induced tuning

Nature Physics, Год журнала: 2024, Номер 20(5), С. 836 - 842

Опубликована: Фев. 19, 2024

Язык: Английский

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Tunable quantum emitters on large-scale foundry silicon photonics

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Июль 10, 2024

Abstract Controlling large-scale many-body quantum systems at the level of single photons and atomic is a central goal in information science technology. Intensive research development has propelled foundry-based silicon-on-insulator photonic integrated circuits to leading platform for optical control with individual mode programmability. However, integrating single-emitter tunability remains an open challenge. Here, we overcome this barrier through hybrid integration multiple InAs/InP microchiplets containing high-brightness infrared semiconductor dot photon emitters into advanced fabricated 300 mm foundry process. With platform, achieve single-photon emission via resonance fluorescence scalable wavelength tunability. The combined opens door programmable processors manufactured foundries.

Язык: Английский

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Deterministic photon source of genuine three-qubit entanglement

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Сен. 5, 2024

Язык: Английский

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Nonlinear quantum optics at a topological interface enabled by defect engineering

Deleted Journal, Год журнала: 2025, Номер 2(1)

Опубликована: Март 6, 2025

Abstract The integration of topology into photonics has generated a new design framework for constructing robust and unidirectional waveguides, which are not feasible with traditional photonic devices. Here, we overcome current barriers to the successful quantum emitters such as dots (QDs) valley-Hall (VH) topological utilising defects at interface stabilise local charge environment inverse efficient topological-conventional mode conversion. By incorporating QDs within VH-photonic crystals, demonstrate first instances single-photon resonant fluorescence transmission spectroscopy emitter waveguide interface. Our results bring together optical nonlinear effects level, offering avenue investigate interaction between systems.

Язык: Английский

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