61 Result(s)
within
Physics
Elementary Particles, Quantum Field Theory
Physics, general
Hong-**g Zhang
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Article
Utilizing Adaptive Boosting to Detect Quantum Steerability
We use Adaptive Boosting (Adaboost) algorithm to detect the quantum steerability of the arbitrary two-qubit quantum state and predict the steerable bounds of the generalized Werner state. The results show that...
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Article
Two-Photon Blockade with Second-Order Nonlinearity in Cavity Systems
Two-photon and multi-photon blockade have become the research focus recently with the development of single-photon blockade. However, we notice that the study of the two-photon and multi-photon blockades has m...
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Article
Preparing Greenberger-Horne-Zeilinger States by Lypunov Control
A scheme is proposed for preparing Greenberger-Horne-Zeilinger (GHZ) states by Lyapunov control based on quantum Zeno dynamics. The advantage of our method is that we use the square pulse to instead of the tim...
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Article
Quantum Algorithm for K-Nearest Neighbors Classification Based on the Categorical Tensor Network States
The quantum K-nearest neighbor algorithm is superior to the classical K-nearest neighbor algorithm in terms of classification efficiency and accuracy. We utilize a graphical data structure called categorical t...
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Article
Lewis-Riesenfeld Invariants in Two-level Quantum System Without the Rotating-Wave Approximation
Quantum adiabatic theorem is one of the most important conclusions in quantum mechanics, and is widely used in quantum theory and quantum information technology. However, since quantum adiabatic process is a v...
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Article
A Quantum Dialogue Protocol in Discrete-time Quantum Walk Based on Hyperentangled States
Due to the influence of external environment and internal factors, the security of quantum dialogue is facing huge challenges. In order to improve the security of quantum dialogue, we proposed the feasible and...
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Article
The Use of Dynamic Environment Library to Achieve Controlling of Atomic Spontaneous Emission Process
The regulation of the spontaneous emission process of the two-level atom in the excited state is studied by using the dynamic environmental library. The central resonant frequency is dynamically modulated, res...
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Article
Temperature Variation of Chaotic Optical Field in Quantum Dissipation Channel and Diffusion Channel
In this paper we discuss the temperature variation of a new chaotic optical field after it passes through a single-mode quantum dissipation and diffusion channel respectively. Using the entangled state represe...
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Article
General Differential Formalism of Normally and Anti-normally Ordering Bose Operators
Operators’ ordering is often employed in almost all calculations of quantum optics. In this paper by virtue of differentiation within ordered product of operators we put forward general differential formalism ...
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Article
Resource-Efficient Direct Entanglement Measurement of Werner State with Hybrid Spin-Photon Interaction System
We propose two resource-efficient schemes of direct entanglement measurement of two-qubit Werner states via hybrid interaction system with nitrogen-vacancy (NV) center coupled to micro-cavity. Based on the unc...
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Article
Quantum State Conversion in Two-Level System Without Rotating-Wave Approximation via Non-Hermitian Shortcuts to Adiabaticity
Adiabatic theorem has found many important applications in quantum physics. Shortcuts to adiabaticity can effectively accelerate adiabatic process. We consider a two-level system (TLS) without rotating-wave ap...
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Article
A Controller-Independent Quantum Dialogue Protocol with Four-Particle States
Controller-independent quantum dialogue (CIQD) is a significant topic in the research of quantum secure direct communication (QSDC). In this paper, we propose a new CIQD protocol with a special kind of four-pa...
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Article
Entanglement Purification on Separate Atoms in an Error-Detected Pattern
We propose an entanglement purification protocol (EPP) for purifying separate atoms embedded in single-sided optical cavities. The protocol works in an error-detected pattern, the reflection coefficients only ...
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Article
Cryptanalysis and Improvement of Some Quantum Proxy Blind Signature Schemes
Recently, two novel quantum proxy blind signature schemes are proposed by Zeng et al. and Yang et al., respectively. Their schemes have made a great contribution to the development of quantum proxy blind signa...
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Article
Deterministic Quantum Controlled Teleportation of Arbitrary Multi-qubit States via Partially Entangled States
In this paper, an efficient proposal for quantum controlled teleporatation of arbitrary multi-qubit states is presented via three-qubit non-maximally entangled states. The successful probability is viewed as o...
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Article
Offline Arbitrated Quantum Blind Dual-Signature Protocol with Better Performance in Resisting Existential Forgery Attack
In this paper, we present an offline arbitrated quantum blind dual-signature protocol by using four-particle entangled Greenberger-Horne-Zeilinger(GHZ) states. By using the special relationship of four-particl...
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Article
Research on System Coherence Evolution of Different Environmental Models
In this paper, we have studied the evolution curve of two-level atomic system that the initial state is excited state. At the different of environmental reservoir models, which include the single Lorentzian, i...
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Article
Preparation of GHZ-Type and W-Type Entangled Squeezed Vacuum States Based on Cavity QED
We propose two schemes for preparing GHZ-type and W-type entangled squeezed vacuum states of electromagnetical fields based on dispersive cavity QED. The GHZ-type and W-type entangled squeezed vacuum states in n ...
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Article
The Nonlinear Jaynes-Cummings Model for the Multiphoton Transition
With the nonlinear Jaynes-Cummings model, we have studied the atom and light field quantum entanglement of multiphoton transition in nonlinear medium, and researched the effect of the transition photon number N a...
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Article
Quantum Entanglement of the Multiphoton Transition Jaynes-Cummings Model
In this paper, we have studied the multiphoton transition Jaynes-Cummings model (N = 1, 2, 3, 4, 5, 6), and researched the effect of initial state superposition coefficient
