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Recent Trends in Quantum Sensing

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Intelligent Sensors".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 191

Special Issue Editor


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Guest Editor
Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Interests: quantum sensing; nitrogen-vacancy center; spin defects; quantum control; quantum computation

Special Issue Information

Dear Colleagues,

Quantum sensing is rapidly transforming the landscape of precision measurement by leveraging uniquely quantum resources such as superposition, coherence, and entanglement. This Special Issue presents a curated collection of recent advances in quantum sensing technologies, methods, and applications. Topics covered span from fundamental breakthroughs in sensor design and control techniques in various platforms to real-world implementations in areas including material science, biology, chemistry, and environmental science. Emphasis is placed on how advances in quantum techniques are boosting sensitivity, improving spatial resolution, increasing robustness to noise, and broadening the capabilities of existing sensors. By bringing together contributions from leading researchers, this Special Issue aims to provide a comprehensive snapshot of the current state and future directions of quantum sensing, highlighting its growing role in both fundamental research and emerging technologies.

Dr. Changhao Li
Guest Editor

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Keywords

  • quantum sensing
  • quantum metrology
  • semiconductor spin defects
  • biosensing
  • quantum control
  • noise spectroscopy
  • magnetometry
  • quantum imaging
  • quantum sensor design
  • distributed sensing.

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Published Papers (1 paper)

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Research

15 pages, 9497 KiB  
Article
Tapered Quantum Cascade Laser Achieving Low Divergence Angle and High Output Power
by Zizhuo Liu, Hongxiao Li, Jiagang Chen, Anlan Chen, Shan Niu, Changlei Wu, Yongqiang Sun, Xingli Zhong, Hui Su, Hao Xu, Jinchuan Zhang, Jiang Wu and Fengqi Liu
Sensors 2025, 25(15), 4572; https://doi.org/10.3390/s25154572 - 24 Jul 2025
Viewed by 57
Abstract
In this work, we present a high-performance tapered quantum cascade laser (QCL) designed to achieve both high output power and low divergence angle. By integrating a tapered waveguide with a Fabry–Perot structure, significant improvements of tapered QCL devices in both output power and [...] Read more.
In this work, we present a high-performance tapered quantum cascade laser (QCL) designed to achieve both high output power and low divergence angle. By integrating a tapered waveguide with a Fabry–Perot structure, significant improvements of tapered QCL devices in both output power and beam quality are demonstrated. The optimized 50 µm wide tapered QCL achieved a maximum output power of 2.76 W in pulsed operation with a slope efficiency of 3.52 W/A and a wall-plug efficiency (WPE) of 16.2%, while reducing the divergence angle to 13.01°. The device maintained a maximum power of 1.34 W with a WPE exceeding 8.2%, measured under room temperature and continuous wave (CW) operation. Compared to non-tapered Fabry–Perot QCLs, the tapered devices exhibited a nearly 10-fold increase in output power and over 200% improvement in WPE. This work provides a promising pathway for advancing mid-infrared laser technology, particularly for applications requiring high power, low divergence, and temperature stability. Full article
(This article belongs to the Special Issue Recent Trends in Quantum Sensing)
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