Quantum Photonics

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 3525

Special Issue Editor


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Guest Editor
School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
Interests: quantum photonics and condensed matter physics based on solid state system; light matter interactions

Special Issue Information

Dear Colleagues,

This Special Issue is devoted to publishing cutting-edge research progress bridging advancements of quantum science and developments of nanophotonic technology. The scope of the issue is international and broad and falls within materials science, photonic engineering, quantum optics, and telecommunication categories. The journal recognizes the complexity of issues and therefore particularly welcomes innovative interdisciplinary research with a wide impact. The readership of the journal includes both researchers and engineers from academia and industry.

Quantum photonics combines the knowledge of quantum science and fast-developing fabrication skills to encourage research pursuing next-generation quantum-based technologies, which is expected to bring our capabilities of sensing, information processing, and communication to another high level. At present, the magnificent yet challenging promise made by quantum technologies has stimulated a broad range of interests in material science to explore novel materials and systems, including novel emitters in wide bandgap materials, two-dimensional semiconductors, and halide perovskites. Meanwhile, state-of-the-art nanofabrication techniques enable synthesizing high-quality waveguide, low-loss nanocavities, and multifunctional integration platforms to enhance light–matter interaction down to the single-photon level. 

This themed issue on quantum platforms for photonic technologies brings worldwide leading experts to discuss the latest research, developments, and perspectives in the field. The topic of the issue focuses on the design and fabrication of novel photonic structures in various crystal and 2D semiconductors, photophysics, and device study of emergent optical-active emitters toward enhanced light–matter interactions and advanced optoelectronic applications, charge carrier spin dynamics, and quantum control of single and ensemble qubits, including but not limited to quantum emitters in crystals, semiconductor nanostructures, 2D semiconductors, and halide perovskite materials.

All types of contributions, i.e., research papers, reviews, and communications, are welcome.

Prof. Wei-bo Gao
Guest Editor

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Published Papers (1 paper)

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14 pages, 849 KiB  
Perspective
Is Heralded Two-Photon Excited Fluorescence with Single Absorbers Possible with Current Technology?
by Andreas Jechow
Photonics 2022, 9(2), 52; https://doi.org/10.3390/photonics9020052 - 19 Jan 2022
Viewed by 2882
Abstract
The interaction between single or a fixed number of photons with a single absorber is of fundamental interest in quantum technology. The harnessing of light matter interactions at the single particle limit has several potential applications ranging from quantum communication and quantum metrology [...] Read more.
The interaction between single or a fixed number of photons with a single absorber is of fundamental interest in quantum technology. The harnessing of light matter interactions at the single particle limit has several potential applications ranging from quantum communication and quantum metrology to quantum imaging. In this perspective, a setup for heralded two-photon excited fluorescence at the single absorber level is proposed. The setup is based on a heralded two-photon source utilizing spontaneous parametric down-conversion, entanglement swapping and sum frequency generation for joint detection. This perspective aimed at triggering a discussion about the study of TPA and TPEF with only very few photons. The feasibility of the scheme is assessed by estimating the performance based on state-of-the-art technologies and losses, with the conclusion that the realization appears to be very challenging, but not completely impossible. Full article
(This article belongs to the Special Issue Quantum Photonics)
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