Article
Engineering, Electrical & Electronic
Duc Minh Truong, Chuong Sy Ho, Dat Quang Tran
Summary: A new state called PAASTMPCS is introduced in this study, which enhances the nonclassical and non-Gaussian properties of a pair coherent state by simultaneously adding and subtracting photons. It is confirmed to be an entangled state based on the linear entropy criterion. The results indicate that using PAASTMPCS as an entangled resource has potential in quantum teleportation processes.
JOURNAL OF COMPUTATIONAL ELECTRONICS
(2021)
Article
Optics
Tran Quang Dat, Truong Minh Duc
Summary: In this paper, a new type of nonclassical state, called two-mode squeezed vacuum states with superposition of photon-pair addition and subtraction operations (TMSVSs-SPPASOs), is introduced. It is demonstrated that the superposition operations of photon-pair added and subtracted can enhance the degree of entanglement of the TMSVSs-SPPASOs. Furthermore, the EPR correlation and the EPR steering in the TMSVSs-SPPASOs can be improved compared with the original TMSVS.
Article
Physics, Multidisciplinary
M. Sayyah-Fard
Summary: This paper presents a new type of optical q-squeezed first excited states and explores the impact of the deformation parameter q on nonclassical behaviors such as quadrature squeezing, sub-Poissonian statistics, and photon antibunching effect. In addition, the q-photon-added squeezed first excited states are constructed and the squeezing properties of the Hillery-type N-powered amplitude in these states are examined.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2021)
Article
Multidisciplinary Sciences
Sang-il Park, Changsuk Noh, Changhyoup Lee
Summary: This paper investigates the quantum advantages in loss sensing using the two-mode squeezed vacuum state as a probe. By computing the signal-to-noise ratio, it is shown that quantum advantages persist even under strong thermal background noise. Furthermore, an optimum measurement scheme is proposed to demonstrate quantum advantages over the entire range of environmental noise and loss.
SCIENTIFIC REPORTS
(2023)
Article
Optics
Song Yang, Shengli Zhang
Summary: In this work, we investigate the loophole-free Bell inequality test using a multi-photon subtracted two-mode squeezed state (TMSS). By applying ideal bi-side five-photon subtractions, we achieve a violation of the Bell inequality that approaches Munro's optimal bound. Additionally, we develop a concise phase-space method for deriving the violation of the loophole-free Bell inequality, providing physically implementable states for experimental realization.
Article
Physics, Multidisciplinary
Yusuf Turek
Summary: The study focused on the effects of postselected von Neumann measurement on the nonclassicality of single-photon-added coherent state (SPACS). Results showed that the postselected measurement significantly altered the nonclassicality of SPACS, leading to stronger sub-Poissonian photon statistics in certain coupling strength regimes, with low postselection probabilities.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Optics
A. Dehghani, B. Mojaveri, A. A. Alenabi
Summary: In this study, a new class of two-mode entangled nonlinear coherent-squeezed states (ENCSS) is proposed by substituting standard coherent states with nonlinear coherent states. Different types of non-linearity functions are employed to investigate the effectiveness of non-linearization of the ECSS. A general analysis of non-classical properties is presented and the entanglement of these states is discussed.
APPLIED PHYSICS B-LASERS AND OPTICS
(2022)
Article
Quantum Science & Technology
Luca Innocenti, Lukas Lachman, Radim Filip
Summary: Experimentally certifying the nonclassicality of quantum states in an optimal and efficient way remains a fundamental challenge. This study introduces a novel approach that is directly applicable to experimental realities and demonstrates its superiority in various scenarios. The findings represent a significant milestone towards a complete characterization of detectable nonclassicality in experimental implementations.
NPJ QUANTUM INFORMATION
(2022)
Article
Optics
Sergey A. Podoshvedov, Mikhail S. Podoshvedov
Summary: A new method for generating entangled states, both hybrid and consisting exclusively of continuous variable (CV) states, is proposed. The entanglement synthesis can be expanded to implement a high-complexity quantum network.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
Stephan Grebien, Julian Goettsch, Boris Hage, Jaromir Fiurasek, Roman Schnabel
Summary: In this experiment, the multistep distillation of squeezed states was analyzed for the first time. By utilizing probabilistic subtraction and Gaussification, the squeeze factor was successfully increased, surpassing the limitations set by the pumped medium's effective nonlinearity.
PHYSICAL REVIEW LETTERS
(2022)
Review
Nanoscience & Nanotechnology
Andreas J. Heinrich, William D. Oliver, Lieven M. K. Vandersypen, Arzhang Ardavan, Roberta Sessoli, Daniel Loss, Ania Bleszynski Jayich, Joaquin Fernandez-Rossier, Arne Laucht, Andrea Morello
Summary: Over the past three decades, nanoscience and quantum science have merged to create a new research field known as quantum-coherent nanoscience. This review focuses on the fundamental principles and practical applications of quantum coherence in nanoscale systems, as well as the challenges and opportunities ahead.
NATURE NANOTECHNOLOGY
(2021)
Article
Optics
Michael G. Raymer, Tiemo Landes
Summary: This article presents an analytical quantum theoretic model for nonresonant molecular two-photon absorption of broadband, spectrally multimode squeezed vacuum. The results have implications for the potential use of entangled-light two-photon absorption as a spectroscopic and imaging method. The study finds that bright squeezed vacuum is as effective in driving two-photon absorption as a quasimonochromatic coherent-state pulse in the case of high gain. It is also shown that the two-photon absorption rate is proportional to the second-order intensity autocorrelation function when the final-state linewidth is much broader than the bandwidth of the exciting light. The article discusses the transition between these two limiting cases and the compensation of dispersion in the nonlinear-optical crystal used to generate the squeezed vacuum.
Article
Optics
Timo Hillmann, Fernando Quijandria
Summary: Noise-biased qubits are a promising approach to reduce the hardware overhead of quantum error correction. The squeezed-cat code, which is a nonlocal encoding in phase space based on squeezed coherent states, exemplifies a noise-biased (bosonic) qubit with exponential error bias. In this study, we propose and analyze a dissipatively stabilized squeezed-cat qubit for error correction. Our findings show that moderate squeezing significantly reduces the bit-flip error rate compared to ordinary cat qubits, while the phase-flip rate remains unchanged. Furthermore, squeezing enables faster and higher fidelity gates.
Article
Optics
Chen-Xi Ning, Miao Yin
Summary: This scheme proposes a method to generate entanglement between magnon and superconducting qubit using cavity and quantum bit coupling and squeezing vacuum field interaction. The establishment of entanglement is highly efficient and robust against temperature in optimal parameter regimes. A new mathematical method for analyzing the dynamics of entanglement is deduced in this study.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Optics
Heng-Mei Li, Zhen Wang, Bao-Hua Yang, Hong-Chun Yuan
Summary: The study investigates the nonclassicality and non-Gaussianity of coherent photon-subtracted two-mode squeezed thermal states, as well as analyzes their fidelity when used as entangled resources for teleporting coherent states. The results show that coherent photon subtraction operation is effective in generating nonclassicality and non-Gaussianity, and CPS-TMSTS exhibits significantly higher fidelity in quantum teleportation compared to original TMSTS.
Article
Optics
Hang Dong, Zhixin Sun, Jingyi Li, Yahui Li, Wei Zhang, Guangyong Jin
Summary: This paper calculates thermal stresses and adsorption forces to determine laser cleaning conditions and establishes relevant models. Experimental results show that the removal effect is better with increasing nanosecond pulse delay, with the best effect achieved at 600 milliseconds pulse delay. Based on the findings, the mechanisms of oxide film removal involve thermal stress against adsorption and plasma shock wave breaking the oxide layer.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Junjie Zhang, Wenjun Li, Bingtao Li, Zheng-Da Hu, Jicheng Wang, Feng Zhang, Lei Wang
Summary: A multilayer thin film device structure based on Tamm plasmons is proposed for high-performance near-infrared hot electron photodetectors. By optimizing the device structure parameters, high responsivity detection can be achieved.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hong Huang, Zhiguang Han
Summary: This paper proposes a new ghost imaging reconstruction method using ordered orthogonal Hadamard derived speckle as the illumination speckle series, and introduces the alternating direction multiplier method to improve the imaging performance. The evaluation results show that the method can achieve high-quality reconstructed images under low sampling conditions.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Moritsugu Sakamoto, Yuki Ono, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Masayuki Tanaka, Hiroshi Ono
Summary: The effect of wavelength and polarization of illuminating light in polarization imaging for birefringent objects placed behind a scattering structure was experimentally investigated. The result shows that the spatial distribution of the birefringent object was more clearly visualized in the longer wavelength combined with circularly polarized light illumination. This finding indicates the potential of using polarization imaging with circularly polarized light illumination in the near-infrared range for visualizing birefringent objects with scattering.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Peihui Du, Hongfang Wang, Pengwei Li, Rukeyemuhan Abadula, Hmbat Batelbek, Min Gao
Summary: In this study, we theoretically demonstrate the strong coupling between Tamm plasmons and exciton polaritons in metal Al/DBR-molecular structures, extending the operating wavelength to the deep ultraviolet region. The coupling strength can be effectively manipulated by adjusting the structure parameters, offering potential benefits for the development of new-style optical filters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Priyanka Chaudhary, Akhilesh Kumar Mishra
Summary: We design and numerically investigate the switching dynamics between two outer waveguides in a parity-time (PT)-symmetric adiabatically coupled three waveguides nonlinear directional coupler (NLDC) system. The study shows that the device can provide switching even when the middle waveguide is nonlinear and the outer waveguides are linear. Furthermore, the effect of loss to gain ratio on critical switching power and the impact of launched light power and gain (loss) value on transmitted power are also studied.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Wei Feng, Yongcong Yi, Shuyang Li, Zhi Xiong, Boya Xie, Zhen Zeng
Summary: Traditional imaging techniques are ineffective in achieving clear underwater imaging due to the presence of scattering media. Single-pixel imaging (SPI) system based on Unet++ offers a solution for reconstructing high-quality images in highly turbid water environments.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiaorui Qu, Jufeng Zhao, Haijun Tian, Junjie Zhu, Guangmang Cui
Summary: This paper studies the structural similarity between RGB and spectral images and proposes a non-iterative Images Structure Similarity (ISS) method for fast reconstruction of spectral images. Additionally, the input of the Deep Image Prior (DIP) method is optimized for the first time by using the initial spectral data reconstructed by ISS, leading to an improved starting value for the iteration. The experimental results show that the proposed method can enhance the reconstruction quality in both spectral and spatial resolutions, while significantly reducing the reconstruction time compared to other DIP-based methods.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Donghe Sheng, Zhe Han, Zanyang Qiao, Tianpei Dong, Chenxi Wang, Huiping Tian
Summary: In this study, a distributed multi-parameter sensor based on an etched few-mode multi-core fiber is proposed, allowing simultaneous sensing of temperature, strain, and sample refractive index. By combining space division multiplexing and stimulated Brillouin scattering, the sensor achieves high sensitivity in detecting these parameters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Dehao Chen, Zhenwu Mo, Zehong Liang, Junjie Jiang, Huilin Tang, Yidan Sun, Ziyu Wang, Quanfeng Wei, Yanru Chen, Dongmei Deng
Summary: In this study, a novel family of elliptical Airyprime vortex beams (EAPVBs) is introduced, which inherits the excellent self-focusing properties of the circular Airyprime vortex beam (CAPVB). The asymmetric focusing of EAPVB leads to some novel properties, such as the splitting of high-order optical vortex and the formation of two foci. By taking advantage of these properties, EAPVB is constructed as a tunable optical bottle for particle capture.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiao Ma, Qiongchan Shao, Jian-Jun He
Summary: In this study, an SHS chip based on Su8 waveguide was designed and fabricated. By physically adjusting the metal electrodes and compensating for transmissivity fluctuations, the generation of side ripples was successfully suppressed.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hongbin Zhang, Jiansen Du, Zongtao Chi, Hailin Cong, Bin Wang
Summary: In this paper, a novel type of dual-wavelength confocal metalens is proposed to solve the spatial crosstalk between two wavelengths. The metalens can greatly reduce the spatial crosstalk and achieve high precision and efficiency in confocal imaging. It can also focus light in specific wavelength ranges, making it suitable for imaging, microscopy, and optical fiber communication.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Rui Qiu, Guanmao Zhang, Shaokai Du, Jie Liu, Hongyu Jib, Kaiyun Bi, Bochuan Xing, Guangchao Diao
Summary: Recent research has developed an achromatic metalens that shows potential for replacing traditional lenses. This study focuses on a continuously variable focus height broadband achromatic metalens for long-wavelength infrared applications. By optimizing materials and parameters, chromatic aberration is effectively corrected, making it suitable for high-resolution LWIR imaging and spectroscopy systems.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Marcos Troncoso-Costas, Gaurav Jain, Yiming Li, Mohammed Patel, Lakshmi Narayanan Venkatasubramani, Sean O'Duill, Frank Smyth, Andrew Ellis, Francisco Diaz-Otero, Colm Browning, Liam Barry
Summary: In this work, a fast-switching tuneable laser capable of wide wavelength coverage, low noise and linewidth levels suitable for high-order modulation formats is demonstrated. The laser is characterized to cover a wavelength range of 35 nm in the C-band with nanosecond switching time. It is used to successfully demonstrate 480 Gbit/s 16QAM transmission over 25 km of single-mode fiber for a wavelength range of 19 nm.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Takeshi Moriyasu, Masahiko Tani, Hideaki Kitahara, Takashi Furuya, Jessica Afalla, Toshiro Kohmoto, Daishiro Koide, Hiroki Sato, Mitsutaka Kumakura
Summary: Optical pump-terahertz probe spectroscopy was used to study the photocarrier dynamics and optical characteristics of semiconductor Si. The results showed that the thickness of Si influenced the transmitted terahertz field amplitude and peak delay time, indicating differences in photocarrier dynamics between different Si materials.
OPTICS COMMUNICATIONS
(2024)