Guangqiang He

Shanghai Jiao Tong University

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Guihua Zeng

Shanghai Jiao Tong University

Zhen Jiang

Jiangsu University

Chaoxiang Xi

Shanghai Jiao Tong University

Chun Jiang

Shanghai Jiao Tong University

Yang Shen

Hunan University

Lefeng Zhou

Shanghai Jiao Tong University

Bo Ji

Shanghai Jiao Tong University

Chenhua Hu

Shanghai Jiao Tong University

Yanghe Chen

Shanghai Jiao Tong University

Tengfei Wu

Aviation Industry Corporation of China (China)

Cooperative Institutions

Shanghai Jiao Tong University

Chinese Academy of Sciences

Huazhong University of Science and Technology

Central South University

Wuhan National Laboratory for Optoelectronics

Nanjing University

University of Chinese Academy of Sciences

University of Electronic Science and Technology of China

Collaborative Innovation Center of Advanced Microstructures

Sun Yat-sen University

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Research on Low-Carbon Strategies of Supply Chains, Considering Livestreaming Marketing Modes and Power Structures

Processes (2023)

Yonghua Gong Guangqiang He

A livestreaming supply chain composed of a single manufacturer and a single streamer in the low-carbon market is examined. Motivated by the actual production and operation, both the manufacturer and the streamer have a chance to dominate the supply chain. Low-carbon strategies and livestreaming marketing modes of the supply chain are studied. The impacts of the consumer’s price sensitivity coefficient, low-carbon preference, and streamer’s promotion sensitivity coefficient on the equilibrium results are further studied. The results show that: the streamer achieves the optimal level of promotion effort in the resale mode under both power structures. The manufacturer achieves the optimal low-carbon level in the commission mode when the promotion sensitivity coefficient is smaller under both of two power structures. The streamer’s profit is optimal in the resale mode, while the manufacturer’s profit is optimal in the commission mode when under the streamer-led structure. Two parties’ profits are optimal in the commission mode when the promotion sensitivity coefficient is smaller under the manufacturer-led structure. The low-carbon level, streamer promotion effort and selling price in two livestreaming marketing modes will increase when the streamer promotion sensitivity coefficient and consumer low-carbon preference increase and will decrease when consumer price sensitivity increases under two power structures. Lastly, the selling price in resale mode is always higher than that in commission mode under two power structures.

Promotion (chess)

Mode (computer interface)

10.3390/pr11051505

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Citations (4)

Hyperentangled-state generation in nanophotonic periodically poled lithium niobate waveguides

Physical Review Applied (2025)

Yanghe Chen Bo Ji Tengfei Wu Guangqiang He

Nanophotonics

10.1103/physrevapplied.23.024030

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Study on the security of discrete-variable quantum key distribution over non-Markovian channels

Journal of Physics B Atomic Molecular and Optical Physics (2012)

Peng Huang Jun Zhu Guangqiang He Guihua Zeng

The dynamic of the secret key rate of the discrete-variable quantum key distribution (QKD) protocol over the non-Markovian quantum channel is investigated. In particular, we calculate the secret key rate for the six-state protocol over non-Markovian depolarizing channels with coloured noise and Markovian depolarizing channels with Gaussian white noise, respectively. We find that the secure secret key rate for the non-Markovian depolarizing channel will be larger than the Markovian one under the same conditions even when their upper bounds of tolerable quantum bit error rate are equal. This indicates that this coloured noise in the non-Markovian depolarizing channel can enhance the security of communication. Moreover, we show that the secret key rate fluctuates near the secure point when the coupling strength of the system with the environment is high. The results demonstrate that the non-Markovian effects of the transmission channel can have a positive impact on the security of discrete-variable QKD.

Quantum key distribution

10.1088/0953-4075/45/13/135501

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Citations (11)

Theoretical Analysis of Spectral Correlations Between Photon Pairs Generated in Nanoscale Silicon Waveguides

Communications in Theoretical Physics (2015)

Liangliang Lu Ping Xu Jianning Xu Guangqiang He Shining Zhu

Spontaneous four wave mixing in nonlinear waveguide is one of the excellent technique for generating photon pairs in well-defined guided modes. Here we present a comprehensive study of the frequency characteristic of correlated photon pairs generated in telecom C-band from a dispersion-engineered silicon wire waveguide. We have demonstrated that the waveguide configuration, shape of pump pulse, two-photon absorption as well as linear losses have significant influences on the biphoton spectral characteristics and the amount of frequency entanglement generated. The superior performance as well as the structural compactness and CMOS compatibility makes the silicon wire waveguide an ideal integrated platform for the implementation of on-chip quantum technologies.

Waveguide

Four-wave mixing

10.1088/0253-6102/64/6/735

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Citations (1)

Quadratic soliton combs in doubly resonant half-harmonic generation

Aiguo Sheng Yilong Zhao Guangqiang He

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text A. Sheng, Y. Zhao, and G. He, "Quadratic soliton combs in doubly resonant half-harmonic generation," in Nonlinear Optics (NLO), OSA Technical Digest (Optica Publishing Group, 2019), paper NTu4A.18. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article

10.1364/nlo.2019.ntu4a.18

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Continuous-variable quantum teleportation in bosonic structured environments

Physical Review A (2011)

Guangqiang He Jingtao Zhang Jun Zhu Guihua Zeng

The effects of dynamics of continuous-variable entanglement under the various kinds of environments on quantum teleportation are quantitatively investigated. Only under assumption of the weak system-reservoir interaction, the evolution of teleportation fidelity is analytically derived and is numerically plotted in terms of environment parameters including reservoir temperature and its spectral density, without Markovian and rotating wave approximations. We find that the fidelity of teleportation is a monotonically decreasing function for Markovian interaction in Ohmic-like environments, while it oscillates for non-Markovian ones. According to the dynamical laws of teleportation, teleportation with better performances can be implemented by selecting the appropriate time.

Teleportation

Quantum teleportation

Superdense coding

Continuous variable

10.1103/physreva.84.034305

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Citations (18)

Tunable Optomechanically Induced Sideband Comb

arXiv (Cornell University) (2020)

Jun‐Hao Liu Guangqiang He Qin Wu Ya-Fei Yu Jindong Wang

Cavity optomechanical system can exhibit higher-order sideband comb effect when it is driven by a control field $\omega_{c}$ and a probe field $\omega_{p}$, and works in the non-perturbative regime, as was shown in a previous work [Xiong et al., Opt. Lett. 38, 353 (2013)]. The repetition frequency of such a comb is equal to the mechanical frequency $\omega_{b}$ and is untunable, which limits the precision of the comb. Here we address this problem by driving the system with an additional strong probe field $\omega_{f}$, and the detuning between $\omega_{f}$ and $\omega_{c}$ is equal to $\omega_{b}/n$ (here $n$ is an integer), i.e., this detuning is a fraction of the mechanical frequency. In this case, we obtain some interesting results. We find that not only the integer-order (higher-order) sidebands, but also the fraction-order sidebands, and the sum and difference sidebands between the integer- and fraction-order sidebands, will appear in the output spectrum. The generated nonlinear sidebands constitute an optomechanically induced sideband comb (OMISC). The frequency range and the repetition frequency of the OMISC are proportional to the sideband cutoff-order number and the sideband interval, respectively. We show that we can extend the frequency range of the OMISC by increasing the intensity of the probe field $\omega_{p}$. More importantly, we can decrease the repetition frequency, and consequently, improve the precision of the OMISC by increasing $n$ and the intensity of the probe field $\omega_{f}$.

Optical frequency comb

10.48550/arxiv.2004.09156

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Quantum-cryptography network via continuous-variable graph states

Physical Review A (2012)

Yujing Qian Zhean Shen Guangqiang He Guihua Zeng

We propose a quantum-cryptography network based on a continuous-variable graph state along with its corresponding quantum key distribution (QKD) protocol. It allows two arbitrary parties in the graph state to share a secret Gaussian key (any-to-any QKD). A mathematical model is established to determine an arbitrary graph state'!`\ifmmode\bar\else\textasciimacron\fi{}s properties, including the possibility of QKD and the relevant criteria. The general entangling cloner attack strategy is analyzed in detail employing Shannon information theory. Results show that the proposed network is secure against such attack if the graph state meets certain criteria.

Quantum key distribution

Continuous variable

10.1103/physreva.86.052333

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Citations (16)

Performance improvement of continuous-variable quantum key distribution via photon subtraction

Physical Review A (2013)

Peng Huang Guangqiang He Jian Fang Guihua Zeng

It has been found that non-Gaussian operations can be applied to increase and distill entanglement between Gaussian entangled states. We propose here a method to improve the performance of entanglement-based (EB) continuous-variable quantum-key-distribution protocol by using the non-Gaussian operation, in particular, the subtraction operation, which can be implemented under current technology easily. Security analysis shows that the subtraction operation can well increase the secure distance and tolerable excess noise of the EB scheme and also the corresponding prepare-and-measure scheme.

Quantum key distribution

Subtraction

Continuous variable

10.1103/physreva.87.012317

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Citations (113)

Generation of Path-Frequency Hyperentanglement by Simultaneous Multiple Quasi-Phase Matching in Nonlinear Photonic Crystals

Conference on Lasers and Electro-Optics (2020)

Yizhou Ding Chaoxiang Xi Guangqiang He

By using multiple quasi-phase matching in the nonlinear photonic crystals (NPC) whose poling direction is perpendicular to the pump beam, we theoretically generated path-frequency hyperentangled photon pairs.

Quasi-phase-matching

Poling

Nonlinear photonic crystal

Frequency Conversion

10.1364/cleo_at.2020.jth2e.25

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