Interaction between Atoms and Slow Light: A Study in Waveguide Design

Zang, Xiaorun; Yang, Jianji; Faggiani, Rémi; Gill, Christopher; Petrov, Plamen G.; Hugonin, Jean‐Paul; Vynck, Kevin; Bernon, Simon; Bouyer, Philippe; Boyer, Vincent; Lalanne, Philippe

doi:10.1103/physrevapplied.5.024003

Cited by 24 publications

(33 citation statements)

References 41 publications

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“…However, it is evident from Eqs. (30), that: (i) the transverse spin density S θ includes both electric and magnetic contributions (first term) along with a new hybrid contribution (second term); (ii) the spin density yields a longitudinal contribution S z stemming from intrinsic helicity. The corresponding expressions for the orbital and spin momenta (P O z , P O θ , P S z and P S θ ) are given in the Supplemental Material [28].…”

Section: Hybrid Guided Modes: Intrinsic-helicity-induced Spinmentioning

confidence: 99%

Spin Angular Momentum of Guided Light Induced by Transverse Confinement and Intrinsic Helicity

Abujetas

Sánchez‐Gil

2020

ACS Photonics

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In recent years, extraordinary spin angular momenta have been investigated in a variety of structured electromagnetic waves, being of especial interest in sub-wavelength evanescent fields. Here we demonstrate analytically that, in planar and cylindrical waveguides supporting transverse electric/magnetic modes, transverse spin density arises inside the waveguide (different from the spin induced in the evanescent region outside the waveguide), carrying indeed longitudinal extraordinary (so-called) Belinfante's spin momentum. Such contribution depends linearly on the mode transverse wave vector, and is thus induced by mode confinement. Cylindrical waveguides support in addition hybrid modes that exhibit a richer phenomenology with not only azimuthal (confinementrelated) spin, but also an intrinsic helicity which leads to longitudinal spin density and transverse helicity-dependent spin momentum. Results are indeed presented for configurations relevant to spinorbit coupling in nanophotonic waveguides and to manipulating optical forces in IR-to-microwave water-filled channels. Thus guided modes intrinsically carrying confinement-induced transverse spin, combined with intrinsic-helicity-induced longitudinal spin (when hybrid), hold promise of superb devices to control spin-orbit interaction and optical forces within confined geometries throughout the electromagnetic spectra.

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Section: Hybrid Guided Modes: Intrinsic-helicity-induced Spinmentioning

confidence: 99%

Spin Angular Momentum of Guided Light Induced by Transverse Confinement and Intrinsic Helicity

Abujetas

Sánchez‐Gil

2020

ACS Photonics

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“…This simple quasi-1D geometry is expected to offer convenient integration with laser cooling and trapping of cold atoms as well as fabrication with high optical quality [41]. We note that other nanophotonic designs are also available in the literature, see [31,42] for example, which in principle can induce even stronger molecular decay rates.…”

Section: The Bpcw For Ground State Molecule Synthesismentioning

confidence: 99%

“…We see that P g rises significantly from the free space probability 1 0.52 h » towards P g = 0.91 for 16 b » in our example. For an even larger value of β, achievable beyond the simple BPCW structure, say [42], the probability further approaches unity, making the PA synthesis to the ground state molecules deterministic.…”

Section: Near-deterministic Single Ground State Molecule Synthesismentioning

confidence: 99%

Ultracold molecule assembly with photonic crystals

2017

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Photoassociation (PA) is a powerful technique to synthesize molecules directly and continuously from cold and ultracold atoms into deeply bound molecular states. In freespace, however, PA efficiency is constrained by the number of spontaneous decay channels linking the initial excited molecular state to a sea of final (meta)stable rovibronic levels. Here, we propose a novel scheme based on molecules strongly coupled to a guided photonic mode in a photonic crystal waveguide that turns PA into a powerful tool for near deterministic formation of ultracold molecules in their ground rovibrational level. Our example shows a potential ground state molecule production efficiency 90% > , and a saturation rate 10 6 > molecules per second. By combining state-of-the-art cold atomic and molecular physics with nanophotonic engineering, our scheme presents a novel experimental package for trapping, cooling, and optically manipulating ultracold molecules, thus opening up new possibilities in the direction of ultracold chemistry and quantum information.

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“…Finally, we are considering breaking the translational invariance and engineering a higher group index for the same mode area with corrugated-type waveguides, 45 or hybrid photonic crystal ones, yielding high effective photon masses. 46 Acknowledgement The authors would like to thank F. Sgrignuoli for helping with numerical simulations, B. Tiribilli, for inspection of the samples by atomic force microscopy,D.S. Wiersma for accessto clean room facilities, M. Bellini and C. Corsi for Ti:sapphire operation and Silvia Diewald for help with electron beam lithography.…”

Section: Integrated Quantum Optics Pah Molecules Single Photon Sourmentioning

confidence: 99%

Photostable molecules on chip: Integrated single photon sources for quantum technologies

Lombardi¹,

Ovvyan²,

Pazzagli³

et al. 2017

2017 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC)

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The on-chip integration of quantum light sources and nonlinear elements poses a serious challenge to the development of a scalable photonic platform for quantum information and communication. In this work we demonstrate the potential of a novel hybrid technology which combines single organic molecules as quantum emitters and dielectric chips, consisting of ridge waveguides and grating far-field couplers. Dibenzoterrylene molecules in thin anthracene crystals exhibit long-term photostability, easy fabrication methods, almost unitary quantum yield and life-time limited emission at cryogenic temperatures. We couple such single emitters to silicon nitride ridge waveguide with a coupling efficiency of up to 42 ± 2 %, considering both propagation directions. The platform is devised to support both on-chip and free-space single photon processing.

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Interaction between Atoms and Slow Light: A Study in Waveguide Design

Abstract: International audienc

Cited by 24 publications

References 41 publications

Spin Angular Momentum of Guided Light Induced by Transverse Confinement and Intrinsic Helicity

Spin Angular Momentum of Guided Light Induced by Transverse Confinement and Intrinsic Helicity

Ultracold molecule assembly with photonic crystals

Photostable molecules on chip: Integrated single photon sources for quantum technologies

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