Super-resolved snapshot hyperspectral imaging of solid-state quantum emitters for high-throughput integrated quantum technologies

Nature Photonics, Год журнала: 2024, Номер 18(9), С. 967 - 974

Опубликована: Май 22, 2024

Язык: Английский

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Direct observation of a few-photon phase shift induced by a single quantum emitter in a waveguide

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

Опубликована: Авг. 31, 2024

Abstract Realizing a sensitive photon-number-dependent phase shift on light beam is required both in classical and quantum photonics. It may lead to new applications for photonics machine learning or pave the way realizing photon-photon gate operations. Nonlinear phase-shifts require efficient light-matter interaction, recently dots coupled nanophotonic devices have enabled near-deterministic single-photon coupling. We experimentally realize an optical of 0.19 π ± 0.03 radians ( ≈ 34 degrees) using weak coherent state interacting with single dot planar waveguide. The probed by interferometric measurements scattered from process nonlinear power, saturation at level compatible scalable photonic integrated circuitry. work open prospects high-efficiency switching be applied proof-of-concept simulation demonstrations.

Язык: Английский

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Strongly Interacting Photons in 2D Waveguide QED

Physical Review Letters, Год журнала: 2024, Номер 132(16)

Опубликована: Апрель 15, 2024

One-dimensional confinement in waveguide quantum electrodynamics (QED) plays a crucial role to enhance light-matter interactions and induce strong nonlinear optical response. In two or higher-dimensional settings, this response is reduced since photons can be emitted within larger phase space, opening the question whether photon-photon interaction still achieved. study, we positively answer for case of 2D square array atoms coupled light confined into two-dimensional waveguide. More specifically, demonstrate occurrence long-lived two-photon repulsive bound states with genuine features. Furthermore, observe signatures these effects also free-space atomic arrays form weakly subradiant in-band scattering resonances. Our findings provide paradigmatic signature presence QED.

Язык: Английский

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Control of Quantized Spontaneous Emission from Single GaAs Quantum Dots Embedded in Huygens’ Metasurfaces

Nano Letters, Год журнала: 2024, Номер unknown

Опубликована: Апрель 15, 2024

Advancements in photonic quantum information systems (QIS) have driven the development of high-brightness, on-demand, and indistinguishable semiconductor epitaxial dots (QDs) as single photon sources. Strain-free, monodisperse, spatially sparse local-droplet-etched (LDE) QDs recently been demonstrated a superior alternative to traditional Stranski–Krastanov QDs. However, integration LDE into nanophotonic architectures with ability scale many interacting is yet be demonstrated. We present potential solution by embedding isolated GaAs within an Al0.4Ga0.6As Huygens' metasurface spectrally overlapping fundamental electric magnetic dipolar resonances. demonstrate for first time position- size-independent, 1 order magnitude increase collection efficiency emission lifetime control single-photon from embedded metasurfaces. Our results represent significant step toward leveraging advantages meet scalability demands QIS.

Язык: Английский

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Violation of Bell inequality by photon scattering on a two-level emitter

Nature Physics, Год журнала: 2024, Номер 20(9), С. 1429 - 1433

Опубликована: Июнь 19, 2024

Язык: Английский

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