Current Optics and Photonics
Vol. 9 No. 1 (Feb. 2025)
한국광학회지
Vol. 36 No. 1(Feb. 2025)
K-Light
vol. 8 no. 1(Jan. 2025)
한국광학회 공식 SNS 계정 바로가기
트위터
인스타그램
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[Editor's Pick] Current Optics and Photonics Vol. 9 no. 1 (2025 February)
Recent Theoretical and Experimental Progress on Boson Sampling
Changhun Oh*
Current Optics and Photonics Vol. 9 No. 1 (2025 Februrary), pp. 1-18
DOI: https://doi.org/10.3807/COPP.2025.9.1.1
Fig. 1 Setup for Fock-state boson sampling. N indistingui shable photons pass through an M-mode interferometer, and then are measured at the output modes on the Fock basis. Reprinted from R. Garcia-Patron et al. Quantum 2019; 3; 169. Copyright © 2019, R. Garcia-Patron et al. [35].
Keywords: Boson sampling, Quantum advantage, Quantum computer, Quantum optics
OCIS codes: (270.0270) Quantum optics; (270.5585) Quantum information and processing; (270.6570) Squeezed states
Abstract
Boson sampling is a restricted model of quantum computation, designed to achieve quantum advantage using nonuniversal quantum systems. By harnessing the quantum interference of indistinguishable bosons (typically photons), it becomes possible to sample from a probability distribution, which is intractable for classical computers. This paper reviews the theoretical foundations of boson sampling and its variations, including Fock-state, scattershot, and Gaussian boson sampling, along with significant experimental progress, from early small-scale demonstrations to large-scale quantum supremacy claims. We further explore classical algorithms for simulating boson sampling, which are crucial for benchmarking the performance of experimental results. Finally we examine potential applications of boson sampling in various fields, including simulation of molecular vibronic spectra in quantum chemistry, and solution of graph-based problems in optimization. These applications demonstrate the wide-ranging impact that boson sampling could have on industries that rely on complex computational models, making it a promising quantum technology for near-term applications.
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[하이라이트 논문] 한국광학회지 Vol. 36 No. 1 (2025 February)
Optical Frequency Combs and Their Applications in Timing and Synchronization
광주파수빗을 이용한 타이밍 및 동기화 기술
김정원†
한국광학회지 Vol. 36 No. 1 (2025 February) pp. 1-11
DOI: https://doi.org/10.3807/KJOP.2025.36.1.001
Fig. 1 (a) Optical pulse train in the time domain and optical frequency comb in the frequency domain. (b) Detecting fceo using f-2f self-referencing with an octave-spanning optical frequency comb.
Keywords: 모드잠금 레이저, 광주파수빗, 동기화, 타이밍
OCIS codes: (320.7090) Ultrafast lasers; (320.7160) Ultrafast technology
초록
광주파수빗은 초고속 광학과 주파수 측정 분야의 융합을 통하여 발전해 온 기술로, 광 주파수와 마이크로파 주파수 간의 정밀한 연결을 가능 하게 하여 다양한 초정밀 과학 및 공학 분야들을 혁신적으로 변화시킨 핵심 기술이다. 본 논문에서는 광주파수빗의 역사적 배경과 이를 생성하는 다양한 광원 기술들을 살펴보고, 저자가 수행한 광주파수빗 기반의 타이밍 및 동기화 연구를 중심으로 주요 성과를 소개한다.
Abstract
Optical frequency combs have emerged as a transformative technology at the intersection of ultrafast optics and frequency metrology, enabling precise links between optical and microwave frequencies. This advancement has revolutionized various fields of precision science and engineering. This paper reviews the historical development of optical frequency combs and the source technologies used for their generation. It also highlights precision-timing and synchronization applications enabled by optical frequency combs.
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