Enhanced Single-Photon Emission from Carbon-Nanotube Dopant States Coupled to Silicon Microcavities

Ishii, Akihiro; He, Xiaowei; Hartmann, Nicolai F.; Machiya, Hidenori; Htoon, Han; Doorn, Stephen K.; Kato, Yuichiro

doi:10.1021/acs.nanolett.8b01170

Cited by 52 publications

(44 citation statements)

References 40 publications

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“…[160] Coupling between 2D photonic crystal microcavities and (6,5) SWCNT sp 3 defect state emission has also been used to fabricate high purity SPE with emission enhancement by a factor of ≈50 and emission rates as high as ≈1.7 × 10 7 Hz. [161] Although the scalability of most defect-based SWCNT SPE systems remains largely unexplored, it has been found that sp 3 defects sites in ultrashort nanotubes (≈40 nm length) dramatically increase their photoluminescence, suggesting their potential in highly scaled photonic systems. [7] One of the shortcomings of the sp 3 defect system is the spectral broadening caused by the diversity of emitting states created through functionalization.…”

Section: Swcnt Single-photon Emittersmentioning

confidence: 99%

Chirality‐Enriched Carbon Nanotubes for Next‐Generation Computing

Rojas

Hersam

2020

Advanced Materials

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electronic, [3-4,4] and functional requirements. [5] Conventional silicon integrated circuit (IC) technology faces significant challenges in meeting these demands due to its limited mechanical flexibility, high temperature processing, and scaling limitations. Emerging alternative computing platforms based on other crystalline semiconductors suffer from similar limitations. Consequently, nextgeneration computing necessitates the exploration of radically different electronic materials. Single-walled carbon nanotubes (SWCNTs) are among the most promising and highly studied nanoelectronic materials. Due to their small size, [6,7] solutionprocessability, [8] chemical stability, [9] and chirality-dependent optoelectronic properties, [10] SWCNTs offer a number of unique advantages and are compatible with the complex requirements of future computing devices. Recent advances in chiral enrichment of polydisperse SWCNTs [8,10] have allowed their use as semiconducting channels in diverse settings including charge transport devices, [2] optical emitters and detectors, [11,12] and chemical sensors. [2,3,13,14] With this tunable functionality, a range of SWCNT-based computing applications have been realized, such as printed digital logic, [15] sub-10 nm complementary metal-oxide-semiconductor (CMOS) field-effect transistors (FETs), [16] neuromorphic devices, [17] single-photon emitters (SPE), [18] and enantiomer-recognition sensors. [14] Herein, we discuss recent advances in SWCNT-based computing technologies that process, manage, and communicate information, with an emphasis on the enabling role of chiral enrichment. Section 2.1 defines the different levels of chiral enrichment. Sections 2.2 and 2.3 describe direct growth methods and post-processing purification of SWCNTs for electronic-type and monochiral enrichment. Section 3 discusses applications of electronic-type-enriched SWCNTs such as wearables, highly scaled FETs, 3D logic-memory integration, and neuromorphic devices. Section 4 outlines applications of monochiral-enriched SWCNTs including monochiral FETs, optical emitters, photodetectors, and optoelectronic ICs. Section 5 considers recent progress toward enantiomerically pure SWCNTs. Finally, Section 6 presents an outlook for SWCNTs in next-generation computing applications including a delineation of remaining challenges and future opportunities. For the past half century, silicon has served as the primary material platform for integrated circuit technology. However, the recent proliferation of nontraditional electronics, such as wearables, embedded systems, and lowpower portable devices, has led to increasingly complex mechanical and electrical performance requirements. Among emerging electronic materials, single-walled carbon nanotubes (SWCNTs) are promising candidates for next-generation computing as a result of their superlative electrical, optical, and mechanical properties. Moreover, their chirality-dependent properties enable a wide range of emerging electronic applications including sub-10 nm complementary fie...

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Section: Swcnt Single-photon Emittersmentioning

confidence: 99%

Chirality‐Enriched Carbon Nanotubes for Next‐Generation Computing

Rojas

Hersam

2020

Advanced Materials

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“…This has been recently performed by coupling a nanotube with aryl sp 3 defects as emitting sites and individualized in sodium deoxycholate with a silicon photonic crystal microcavity. [66] Coupling the single photon source to the mode of the silicon microcavity leads to an emission rate enhancement of two orders of magnitude (1.7x10 7 photons per second). [66] These recent results represent a breakthrough as hybrid nanotubes can be used as high emission, room temperature stable single photon sources which can be tuned when coupled to the mode of an optical cavity.…”

Section: Hybrid Nanotubes For Cavity Quantum Electrodynamicsmentioning

confidence: 99%

“…[66] Coupling the single photon source to the mode of the silicon microcavity leads to an emission rate enhancement of two orders of magnitude (1.7x10 7 photons per second). [66] These recent results represent a breakthrough as hybrid nanotubes can be used as high emission, room temperature stable single photon sources which can be tuned when coupled to the mode of an optical cavity. This opens up new possibilities for quantum optics and cryptography.…”

Section: Hybrid Nanotubes For Cavity Quantum Electrodynamicsmentioning

confidence: 99%

New Light on Molecule–Nanotube Hybrids

2019

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Optoelectronics is benefitting from outstanding new nanomaterials providing emission/detection in the whole visible and near infra-red range, photoswitches, two level systems for single photon emission etc. Among these, carbon nanotubes have first been envisioned as game changers while the difficult handling and control over chirality burden their use. However recent breakthroughs on hybrid carbon nanotubes establish nanotubes as pioneers for a new family of building blocks for optics and quantum optics. Functionalization of carbon nanotubes with molecules or polymers not only preserves the nanotube properties from the environment, but also provides new performance to the resulting hybrids. Photoluminescence and Raman signals are enhanced in the hybrids which questions the nature of the electronic coupling between nanotube and molecules. Furthermore, coupling to optical cavities enhances dramatically single photon emission which operates up to room temperature. This new light on nanotube hybrids shows their potential to push optoelectronics a step forward.

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“…On-demand single photons are one of the key elements required for optical quantum information processing. [1][2][3][4][5] Among many candidates for the generation of single photons, [6][7][8][9][10][11][12] semiconductor quantum dots (QDs) are promising for their high stability, good repetition rate, and compatibility with quantum photonic networks. 13,14 Notably, III-nitride QDs 15 offer a variety of attractive properties, such as large exciton binding energies and large band offsets, which allow high-temperature operation.…”

Section: Introductionmentioning

confidence: 99%

Single‐photon emission from a further confined InGaN/GaN quantum disc via reverse‐reaction growth

Sun

Wang

Sheng

et al. 2019

Quantum Engineering

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We demonstrate high-purity single-photon emission from a high-quality and further confined InGaN (indium gallium nitride) quantum disc in a GaN (gallium nitride) nanowire fabricated by an unconventional and versatile reverse-reaction fabrication method. This further confined structure exhibits single-photon emission with a g (2) (0) value of 0.11 at 8 K with a sub-nanosecond radiative lifetime. The formation of the further confined structure using this versatile reverse-reaction fabrication approach overcomes many limitations in conventional self-assembled III-nitride nanowires and, thus, exhibits a strong potential application as a high-purity single-photon source. KEYWORDSInGaN, molecular beam epitaxy, nanowires, quantum dots, reverse-reaction growth, self-assembled, single-photon emission Quantum Engineering. 2019;1:e20.wileyonlinelibrary.com/journal/que2

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Enhanced Single-Photon Emission from Carbon-Nanotube Dopant States Coupled to Silicon Microcavities

Cited by 52 publications

References 40 publications

Chirality‐Enriched Carbon Nanotubes for Next‐Generation Computing

Chirality‐Enriched Carbon Nanotubes for Next‐Generation Computing

New Light on Molecule–Nanotube Hybrids

Single‐photon emission from a further confined InGaN/GaN quantum disc via reverse‐reaction growth

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