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| Open AccessSlow light topological photonics with counter-propagating waves and its active control on a chip
Topological slow light is of fundamental importance for science and technology. Here the authors reveal that the presence of magnetic phase vortices along with glide symmetric interfaces is crucial for the existence of slow light modes in topological valley photonic crystal waveguide.
- Abhishek Kumar
- , Yi Ji Tan
- & Ranjan Singh
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| Open AccessSlow light in a 2D semiconductor plasmonic structure
Slow light effects are interesting for telecommunications and quantum photonics applications. Here, the authors use coupled exciton-surface plasmon polaritons (SPPs) in a hybrid monolayer WSe2-metallic waveguide structure to demonstrate a 1300-fold reduction of the SPP group velocity.
- Matthew Klein
- , Rolf Binder
- & John R. Schaibley
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| Open AccessSlow light nanocoatings for ultrashort pulse compression
Controlling the dispersion of femtosecond light pulses remains a key challenge for their application. Here, the authors report dispersion-engineered transmissive nanocoatings for ultrashort laser pulse compression in the vis-NIR spectral region.
- M. Ossiander
- , Y.-W. Huang
- & F. Capasso
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| Open AccessElimination of noise in optically rephased photon echoes
Photon echo techniques are difficult to implement in the quantum regime due to coherent and spontaneous emission noise. Here, the authors propose a low-noise photon-echo quantum memory approach based on all-optical control in a four-level system, and demonstrate it using a Eu3+:Y2SiO5 crystal.
- You-Zhi Ma
- , Ming Jin
- & Guang-Can Guo
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| Open AccessOne-hour coherent optical storage in an atomic frequency comb memory
Quantum memories are key components for quantum communication, but current storage times are still too short. Here, the authors use the atomic frequency comb protocol in a zero-first-order-Zeeman field to coherently store an optical pulse for an hour in a cryogenically cooled rare-earth doped crystal.
- Yu Ma
- , You-Zhi Ma
- & Guang-Can Guo
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| Open AccessReflection from a free carrier front via an intraband indirect photonic transition
Here the authors present an experimental demonstration of a free carrier front induced intraband indirect photonic transition and show how the waveguide dispersion can be exploited to decrease the required free carrier concentration for substantial reflection via an indirect intraband transition.
- Mahmoud A. Gaafar
- , Dirk Jalas
- & Manfred Eich
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| Open AccessSimulating quantum light propagation through atomic ensembles using matrix product states
Numerical simulation of light propagation through 1D atomic systems in the many-body limit rapidly saturates hardware capabilities. Here, the authors tackle the problem by mapping the dynamics to an open 1D interacting spin system and solving it using the matrix product state ansatz.
- Marco T. Manzoni
- , Darrick E. Chang
- & James S. Douglas
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| Open AccessEstablishing and storing of deterministic quantum entanglement among three distant atomic ensembles
Continuous-variable encoding is a promising approach for quantum information and communication networks. Here, the authors show how to map entanglement from three spatial optical modes to three separated atomic samples via electromagnetically induced transparency, releasing it later on demand.
- Zhihui Yan
- , Liang Wu
- & Kunchi Peng
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| Open AccessSlow-light-enhanced energy efficiency for graphene microheaters on silicon photonic crystal waveguides
Slow light can be used to sustain strong light–matter interaction in silicon photonics. Here, the authors combine graphene with a silicon slow-light photonic crystal waveguide, demonstrating a fast and energy-efficient graphene microheater.
- Siqi Yan
- , Xiaolong Zhu
- & Yunhong Ding
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| Open AccessStoring single photons emitted by a quantum memory on a highly excited Rydberg state
The state of a single photon can be stored as a Rydberg excitation using electromagnetically induced transparency, and this enables nonlinear interactions at the single-photon level. Here, the authors store a paired photon emitted by a quantum memory in an ensemble-based, highly nonlinear medium.
- Emanuele Distante
- , Pau Farrera
- & Hugues de Riedmatten
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| Open AccessLarge Fizeau’s light-dragging effect in a moving electromagnetically induced transparent medium
Phase velocity of light can be slowed down when passing through a moving medium. Here the authors demonstrate a light dragging effect enhanced by three orders of magnitude over previous reports by using electromagnetically induced transparency in cold Rubidium atoms and utilize this effect for motion sensors.
- Pei-Chen Kuan
- , Chang Huang
- & Shau-Yu Lan
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| Open AccessSubnatural-linewidth biphotons from a Doppler-broadened hot atomic vapour cell
Quantum-network protocols based on photon-atom interfaces have stimulated a great demand for single-photon sources with narrow bandwidth. Here the authors report the generation of entangled photon pairs with controllable bandwidth and coherence time from a Doppler-broadened hot atomic vapour cell.
- Chi Shu
- , Peng Chen
- & Shengwang Du
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| Open AccessExperimental demonstration of spinor slow light
Slow and stored light induced by electromagnetically induced transparency can enhance the strength of light–matter interaction and enable nonlinear optical processes even at single-photon levels. Here Lee, et al.demonstrate spinor slow light using a double-tripod atom–light coupling scheme.
- Meng-Jung Lee
- , Julius Ruseckas
- & Ite A. Yu