Efficient light harvesting and photon sensing via engineered cooperative effects

Mattiotti, Francesco; Sarovar, Mohan; Giusteri, Giulio G.; Borgonovi, Fausto; Celardo, G. L.

doi:10.1088/1367-2630/ac4127

Cited by 8 publications

(2 citation statements)

References 54 publications

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“…Such extraordinary optical properties can be exploited for applications including efficient energy transfer, single-photon sources, or light-harvesting [37,38]. We have previously shown [35,36] that tailoring the geometry, orientation, and distance between two such nanorings allows for lossless and high-fidelity transport of subradiant excitations, as if the two rings were two coupled nanoscale ring resonators.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of Concentric Nanorings of Quantum Emitters

et al. 2023

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A ring of sub-wavelength spaced dipole-coupled quantum emitters features extraordinary optical properties when compared to a one-dimensional chain or a random collection of emitters. One finds the emergence of extremely subradiant collective eigenmodes similar to an optical resonator, which features strong 3D sub-wavelength field confinement near the ring. Motivated by structures commonly appearing in natural light-harvesting complexes (LHCs), we extend these studies to stacked multi-ring geometries. We predict that using double rings allows us to engineer significantly darker and better confined collective excitations over a broader energy band compared to the single-ring case. These enhance weak field absorption and low-loss excitation energy transport. For the specific geometry of the three rings appearing in the natural LH2 light-harvesting antenna, we show that the coupling between the lower double-ring structure and the higher energy blue-shifted single ring is very close to a critical value for the actual size of the molecule. This creates collective excitations with contributions from all three rings, which is a vital ingredient for efficient and fast coherent inter-ring transport. This geometry thus should also prove useful for the design of sub-wavelength weak field antennae.

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Section: Introductionmentioning

confidence: 99%

Optical Properties of Concentric Nanorings of Quantum Emitters

et al. 2023

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“…Such extraordinary optical properties can be exploited for applications including efficient energy transfer, single photon sources or light harvesting [30,31]. We have previously shown [28,29], that tailoring the geometry, orientation and distance between two such nanorings allows for lossless and high fidelity transport of subradiant excitations, as if the two rings were two coupled nano-scale ring resonators.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of Concentric Nanorings of Quantum Emitters

Scheil¹,

Holzinger²,

Moreno-Cardoner³

et al. 2023

Preprint

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A ring of sub-wavelength spaced dipole-coupled quantum emitters features extraordinary optical properties when compared to a one-dimensional chain or a random collection of emitters. One finds the emergence of extremely subradiant collective eigenmodes similar to an optical resonator, which feature strong 3D sub-wavelength field confinement. Motivated by structures commonly appearing in natural light harvesting complexes, we extend these studies to stacked concentric multi-ring geometries. We predict that double rings allow to engineer significantly darker and better confined collective excitation states over a broader energy band compared to the single ring case. These potentially enhance weak field absorption and low loss excitation energy transport. For the specific geometry of the three rings appearing in the natural LH2 antenna we show that the coupling between the lower double ring structure and the higher energy blue shifted single ring is very close to a critical value for the actual size of the molecule. This creates collective excitations with significant contributions from all three rings as a vital ingredient for efficient and fast coherent inter-ring transport. Such a geometry thus should prove useful for the design of sub-wavelength weak field antennas.

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Nanoscale architecture for frequency-resolving single-photon detectors

2023

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Single photon detectors play a key role across several basic science and technology applications. While progress has been made in improving performance, single photon detectors that can maintain high performance while also resolving the photon frequency are still lacking. By means of quantum simulations, we show that nanoscale elements cooperatively interacting with the photon field in a photodetector architecture allow to simultaneously achieve high efficiency, low jitter, and high frequency resolution. We discuss how such cooperative interactions are essential to reach this performance regime, analyzing the factors that impact performance and trade-offs between metrics. We illustrate the potential performance for frequency resolution over a 1 eV bandwidth in the visible range, indicating near perfect detection efficiency, jitter of a few hundred femtoseconds, and frequency resolution of tens of meV. Finally, a potential physical realization of such an architecture is presented based on carbon nanotubes functionalized with quantum dots.

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Efficient light harvesting and photon sensing via engineered cooperative effects

Cited by 8 publications

References 54 publications

Optical Properties of Concentric Nanorings of Quantum Emitters

Optical Properties of Concentric Nanorings of Quantum Emitters

Optical Properties of Concentric Nanorings of Quantum Emitters

Nanoscale architecture for frequency-resolving single-photon detectors

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