Emerging Quantum Optical Devices and Their Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: 31 January 2025 | Viewed by 2069

Special Issue Editors


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Guest Editor
School of Science, Harbin Institute of Technology, Shenzhen 518057, China
Interests: micro-nano optics; quantum defect; quantum control; quantum devices
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
College of Physics, Sichuan University, Chengdu 610065, China
Interests: silicon carbide; solid-state spin qubits; quantum information
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Special Issue welcomes contributions on emerging quantum optical devices and their applications. This Special Issue aims to showcase the latest advancements in quantum optics research, highlighting innovative devices poised to transform various sectors of technology. Topics include exploring techniques for generating single photons efficiently, improving integrated circuits for quantum technologies, analyzing secure communication protocols, studying materials that enhance quantum device performance, discussing integration with CMOS technology, examining theoretical models and experimental demonstrations of quantum phenomena, and exploring applications in secure communication, quantum computing, biomedical imaging, and sensing technologies. Contributions should address these themes from both theoretical and practical perspectives, fostering a comprehensive understanding of current knowledge and prospects in quantum optics research and technology.

Prof. Dr. Yu Zhou
Prof. Dr. Junfeng Wang
Guest Editors

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Keywords

  • quantum devices
  • quantum optics
  • quantum hardware and quantum chips

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Published Papers (2 papers)

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Research

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9 pages, 623 KiB  
Article
Suppressing Thermal Noise to Sub-Millikelvin Level in a Single-Spin Quantum System Using Realtime Frequency Tracking
by Zhiyi Hu, Jingyan He, Runchuan Ye, Xue Lin, Feifei Zhou and Nanyang Xu
Micromachines 2024, 15(7), 911; https://doi.org/10.3390/mi15070911 - 13 Jul 2024
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Abstract
A single nitrogen-vacancy (NV) center in a diamond can be used as a nanoscale sensor for magnetic field, electric field or nuclear spins. Due to its low photon detection efficiency, such sensing processes often take a long time, suffering from an electron spin [...] Read more.
A single nitrogen-vacancy (NV) center in a diamond can be used as a nanoscale sensor for magnetic field, electric field or nuclear spins. Due to its low photon detection efficiency, such sensing processes often take a long time, suffering from an electron spin resonance (ESR) frequency fluctuation induced by the time-varying thermal perturbations noise. Thus, suppressing the thermal noise is the fundamental way to enhance single-sensor performance, which is typically achieved by utilizing a thermal control protocol with a complicated and highly costly apparatus if a millikelvin-level stabilization is required. Here, we analyze the real-time thermal drift and utilize an active way to alternately track the single-spin ESR frequency drift in the experiment. Using this method, we achieve a temperature stabilization effect equivalent to sub-millikelvin (0.8 mK) level with no extra environmental thermal control, and the spin-state readout contrast is significantly improved in long-lasting experiments. This method holds broad applicability for NV-based single-spin experiments and harbors the potential for prospective expansion into diverse nanoscale quantum sensing domains. Full article
(This article belongs to the Special Issue Emerging Quantum Optical Devices and Their Applications)
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Review

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30 pages, 13622 KiB  
Review
Key Technologies in Developing Chip-Scale Hot Atomic Devices for Precision Quantum Metrology
by Huiyao Yu, Xuyuan Zhang, Jian Zhang, Zhendong Wu, Long Jiao, Kan Li and Wenqiang Zheng
Micromachines 2024, 15(9), 1095; https://doi.org/10.3390/mi15091095 - 29 Aug 2024
Viewed by 502
Abstract
Chip-scale devices harnessing the interaction between hot atomic ensembles and light are pushing the boundaries of precision measurement techniques into unprecedented territory. These advancements enable the realization of super-sensitive, miniaturized sensing instruments for measuring various physical parameters. The evolution of this field is [...] Read more.
Chip-scale devices harnessing the interaction between hot atomic ensembles and light are pushing the boundaries of precision measurement techniques into unprecedented territory. These advancements enable the realization of super-sensitive, miniaturized sensing instruments for measuring various physical parameters. The evolution of this field is propelled by a suite of sophisticated components, including miniaturized single-mode lasers, microfabricated alkali atom vapor cells, compact coil systems, scaled-down heating systems, and the application of cutting-edge micro-electro-mechanical system (MEMS) technologies. This review delves into the essential technologies needed to develop chip-scale hot atomic devices for quantum metrology, providing a comparative analysis of each technology’s features. Concluding with a forward-looking perspective, this review discusses the future potential of chip-scale hot atomic devices and the critical technologies that will drive their advancement. Full article
(This article belongs to the Special Issue Emerging Quantum Optical Devices and Their Applications)
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