Article
Physics, Multidisciplinary
Ivan A. Burenkov, N. Fajar R. Annafianto, M. Jabir, Michael Wayne, Abdella Battou, Sergey Polyakov
Summary: In this study, we demonstrate the confidence estimation for individual quantum measurement outcomes using the continuous measurement theory. We experimentally obtain single-shot and average confidences for quantum measurements and show their favorable comparison to idealized classical measurement. Additionally, we prove that single-shot confidence estimations accurately represent observed experimental outcomes for a large ensemble of measurements.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
G. S. Thekkadath, S. Sempere-Llagostera, B. A. Bell, R. B. Patel, M. S. Kim, I. A. Walmsley
Summary: In this study, the discrimination of binary-phase-shifted coherent states at a telecom wavelength was successfully achieved using a photon-number-resolving detector, the transition-edge sensor, resulting in a bit error probability that exceeds the standard quantum limit by up to 7.7 dB. This improvement persists for signals containing up to approximately seven photons on average and can be achieved in a single shot, making the approach compatible with larger bandwidths.
Article
Optics
M. V. Jabir, N. Fajar R. Annafianto, A. Battou, I. A. Burenkov, Sergey Polyakov
Summary: We experimentally explore single-shot state identification using long alphabets of states and different modulation schemes. We demonstrate the advantage of this measurement method over classical state identification and show the physical significance and reliability of confidence estimates.
Article
Quantum Science & Technology
M. T. DiMario, F. E. Becerra
Summary: In this article, we experimentally demonstrate the optimal inconclusive measurement using linear optics and single-photon detection to discriminate binary coherent states. We also propose a hybrid measurement that combines the optimal inconclusive measurement with sequential, unambiguous state elimination to achieve higher dimensional inconclusive measurements of coherent states.
NPJ QUANTUM INFORMATION
(2022)
Article
Quantum Science & Technology
M. Jabir, N. Fajar R. Annafianto, I. A. Burenkov, A. Battou, S. Polyakov
Summary: This study systematically explores how to efficiently enhance quantum optical communication through quantum receivers and modulation methods, and experimentally demonstrates the practical benefits of quantum-inspired modulation schemes.
NPJ QUANTUM INFORMATION
(2022)
Article
Optics
Haitang Yang, Esther Y. H. Lin, Kiriakos N. Kutulakos, George V. Eleftheriades
Summary: Super-oscillatory imaging is a technique that can go beyond the diffraction limit. This study provides a comprehensive theoretical analysis and experimental validation of the integration of super-oscillatory imaging into existing microscopes and telescopes, as well as the operational limits of the approach.
Article
Quantum Science & Technology
Arturo Arvizu-Mondragon, Francisco J. Mendieta-Jimenez, Cesar A. Lopez-Mercado, Ramon Muraoka-Espiritu
Summary: This work presents an analysis of the quantum detection of information-carrying coherent states in optical communication systems. The transmitter prepares a set of quantum states and sends them through the optical channel in different modulation formats. At the receiver, measurements are performed to accurately determine the sent state with the help of prior information. The performance of the received quantum state constellations is analyzed using the square root method, considering error probability and mutual information.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Shuangxing Yun, Hongwei Xu, Ning Fu, Liyan Qiao
Summary: This article proposes a sub-Nyquist modulation sampling system with two measurement channels to mitigate the impact of shot noise on the parameter measurement process of finite rate of innovation (FRI) signals. The noisy signal is filtered and sampled in the main channel, while the FRI signal is shifted out of the baseband in the accessory channel to expose the shot noise information. Parameters of shot noise and FRI signal can be estimated separately. The proposed method improves the measurement accuracy and robustness in nonideal environments compared to classical antinoise algorithms.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Review
Quantum Science & Technology
M. A. Rodriguez-Garcia, M. T. DiMario, P. Barberis-Blostein, F. E. Becerra
Summary: This paper presents a strategy for single-shot phase estimation of coherent states based on adaptive non-Gaussian, photon counting measurements. Through comprehensive statistical analysis, it is found that these non-Gaussian strategies have the same functional form as the canonical phase measurement and have higher sensitivity.
NPJ QUANTUM INFORMATION
(2022)
Article
Optics
Gwanjin Lee, Konkada Manattayil Jyothsna, Heejin Lim, Jonghoo Park, JaeDong Lee, Varun Raghunathan, Hyunmin Kim
Summary: In this study, a focus-engineered non-degenerate pumped coherent anti-Stokes Raman scattering (CARS) method using phase shaping, liquid lens focus control, and confocal detection is proposed for resolving non-fluorescent samples beyond the diffraction limit. The results show that non-degenerate pumped CARS achieved approximately 75% improvement in resolution compared to degenerate CARS.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Quantum Science & Technology
Ivan A. Burenkov, N. Fajar R. Annafianto, M. V. Jabir, Abdella Battou, Sergey V. Polyakov
Summary: This study demonstrates efficient error correction for quantum receivers in optical communication, utilizing unique information available in quantum measurement. The results show excellent performance of the proposed method in protecting and recovering user data, enabling reliable quantum reception in ultra-low power optical communication.
AVS QUANTUM SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Hui-Seok Gu, Chun-Sung Kim, In-Sung Jeong
Summary: This paper analyzes the characteristics and applications of current limiting and blocking technology using superconductors through experiments and simulations. It provides guidance for selecting the optimal winding type in the future for use in medium and low voltage environments.
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY
(2022)
Article
Computer Science, Information Systems
Xiangjun Xu, Mingwei Shen, Di Wu, Daiyin Zhu
Summary: An improved algorithm based on a higher-order off-grid model and unitary transformation is proposed for off-grid coherent DOA estimation, which increases estimation accuracy and efficiency. Extensive simulation results show that the proposed algorithm outperforms the OGWSBI algorithm in terms of accuracy and computation time.
WIRELESS COMMUNICATIONS & MOBILE COMPUTING
(2021)
Proceedings Paper
Computer Science, Software Engineering
Oleg Chernoyarov, Alexey Glushkov, Vladimir Litvinenko, Maksim Maksimov, Alexandra Salnikova
Summary: Fast algorithms for coherent demodulation of two-level APSK signals and APSK-RA signals are proposed, which require a minimum number of arithmetic operations. Phase demodulation is based on a phase detector for multi-level phase keyed signals, and the symbol amplitude is determined by the responses of quadrature channels. These algorithms can be implemented in both analog and digital versions, without the need for signal normalization.
SOFTWARE ENGINEERING PERSPECTIVES IN SYSTEMS, VOL. 1
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Ryo Igarashi, Ryo Koma, Kazutaka Hara, Kazuaki Honda, Jun-ichi Kani, Tomoaki Yoshida
Summary: This study presents an AMCC signal extraction method for a single coherent receiver, achieving successful decoding of high-speed signals with minimal loss.
2021 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)
(2021)
Article
Physics, Applied
K. Hattori, R. Kobayashi, T. Numata, S. Inoue, D. Fukuda
JOURNAL OF LOW TEMPERATURE PHYSICS
(2018)
Article
Physics, Applied
D. Fukuda, K. Niwa, K. Hattori, S. Inoue, R. Kobayashi, T. Numata
JOURNAL OF LOW TEMPERATURE PHYSICS
(2018)
Article
Engineering, Electrical & Electronic
Daiji Fukuda
IEICE TRANSACTIONS ON ELECTRONICS
(2019)
Article
Physics, Applied
Hajime Ezawa, Hiroshi Matsuo, Masahiro Ukibe, Go Fujii, Shigetomo Shiki
JOURNAL OF LOW TEMPERATURE PHYSICS
(2019)
Article
Engineering, Electrical & Electronic
Kaori Hattori, Shuichiro Inoue, Ryo Kobayashi, Kazuki Niwa, Takayuki Numata, Daiji Fukuda
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2019)
Article
Physics, Multidisciplinary
Masaaki Maezawa, Go Fujii, Mutsuo Hidaka, Kentaro Imafuku, Katsuya Kikuchi, Hanpei Koike, Kazumasa Makise, Shuichi Nagasawa, Hiroshi Nakagawa, Masahiro Ukibe, Shiro Kawabata
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2019)
Article
Engineering, Electrical & Electronic
Chiharu Watanabe, Masahiro Ukibe, Nobuyuki Zen, Go Fujii, Kazumasa Makise, Masataka Ohkubo, Te-Hui Lee, Di-Jing Huang
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2019)
Article
Engineering, Electrical & Electronic
Tomoya Irimatsugawa, Hirotake Yamamon, Fuminori Hirayama, Shuichi Nagasawa, Go Fujii, Satoshi Kohjiro, Akira Sato, Daiji Fukuda, Mutsuo Hidaka, Yasushi Sato, Masashi Ohno, Hiroyuki Takahashi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2019)
Article
Engineering, Electrical & Electronic
Ryo Kobayashi, Kaori Hattori, Shuichiro Inoue, Daiji Fukuda
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2019)
Article
Physics, Applied
R. Kou, N. Yamamoto, G. Fujii, T. Aihara, T. Tsuchizawa, A. Ishizawa, K. Hitachi, H. Gotoh, M. Ukibe, K. Yamada
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Nanoscience & Nanotechnology
K. Hattori, R. Kobayashi, S. Takasu, D. Fukuda
Article
Physics, Applied
Hajime Ezawa, Hiroshi Matsuo, Masahiro Ukibe, Go Fujii, Shigetomo Shiki
JOURNAL OF LOW TEMPERATURE PHYSICS
(2020)
Article
Physics, Applied
Kaori Hattori, Toshio Konno, Yoshitaka Miura, Sachiko Takasu, Daiji Fukuda
Summary: This study tested an Au/Ti (10/20 nm) bilayer TES that achieved a high energy resolution by lowering the critical temperature Tc to 115 mK. The results have important implications for improving the energy resolution in biological imaging and microscopic spectroscopy.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
K. Hattori, S. Inoue, R. Kobayashi, K. Niwa, T. Numata, D. Fukuda
2018 CONFERENCE ON PRECISION ELECTROMAGNETIC MEASUREMENTS (CPEM 2018)
(2018)
