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Article
Multi-Headed Symmetrical Superpositions of Coherent States
Based on N different coherent states with equal weights and phase-space rotation symmetry, we introduce N-headed incoherent superposition states (NHICSSs) and N-headed coherent superposition states (NHCSSs). Thes...
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Article
Conditional generation of multiphoton-subtracted squeezed vacuum states: loss consideration and operator description
In terms of the characteristic functions of the quantum states, we present a complete operator description of a lossy photon-subtraction scheme. Feeding a single-mode squeezed vacuum into a variable beam split...
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Article
Induced States from Coherent State via Photon-Addition Operations
Three classes of quantum states are induced from coherent state (CS) based on three operations associated with the photon creation operator. One class is the famous photon-added coherent state (PACS) introduce...
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Article
Nonclassical properties of induced states from single-mode squeezed vacuum state related with Hermite excited elementary superposition operation
Based on single-mode squeezed vacuum state (SVS) and Hermite-excited elementary superposition operator \( H_{m} (xa^{\dagger}+ya)\) ...
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Article
Quantum-Catalyzed Squeezed Vacuum State with Single-Photon Measurement and its Nonclassicality
We propose a theoretical scheme to generate a new kind of non-Gaussian state, called single-photon quantum-catalyzed squeezed vacuum state (SPQCSVS), by using a squeezed vacuum state as the input state of quan...
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Article
Dynamical Evolution of Properties for Atom and Field in the Process of Two-Photon Absorption and Emission Between Atomic Levels
Using dressed state method, we cleverly solve the dynamics of atom-field interaction in the process of two-photon absorption and emission between atomic levels. Here we suppose that the atom is initially in th...
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Article
Some Evolution Formulas on the Optical Fields Propagation in Realistic Environments
Evolution formulas of the density operator, the photon number distribution, and the Wigner function are derived for the problem on the optical fields propagation in realistic environments. Using the idea “rese...
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Article
Open AccessAn easy measure of quantum correlation
To measure the quantum correlation of a bipartite state, a test matrix is constructed through the commutations among the blocks of its density matrix, which turns out to be a zero matrix for a classical state ...
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Article
M Times Photon Subtraction-Addition Coherent Superposition Operated Odd-Schrődinger-cat State: Nonclassicality and Decoherence
We introduce a new non-Gaussian state (MCSO-OSCS), generated by m times coherent superposition operation acos θ + a †sin θ (MCSO) on odd-Schrődinger-cat state |α 0〉...
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Article
Quantum phase estimation with local amplified 1001 state based on Wigner-function method
We demonstrate the utility of Wigner-function (WF) method in studying the quantum phase estimation. This phase estimation protocol for optical interferometry uses local amplified 1001 state as a probe state. H...
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Article
Nonclassicality and Decoherence of the Variable Arcsine State in a Thermal Environment
A kind of non-Gaussian state—variable arcsine state is studied by using the input-output theories which relate the statistical properties of the output field to those of the input field. The variable arcsine s...
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Article
Optical Parametric Amplification of Single Photon: Statistical Properties and Quantum Interference
By using phase space method, we theoretically investigate the quantum statistical properties and quantum interference of optical parametric amplification of single photon. The statistical properties, such as t...
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Article
Nonclassicality and Decoherence of Generalized Photon-Modulated Squeezed Thermal State
In this paper, we introduce the generalized photon-modulated squeezed thermal states (GPMSTS) obtained by repeatedly acting the combination of Bosonic creation and annihilation operation on the squeezed therma...
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Article
Nonlocality of High-Order Superposition Photon Addition Two-Mode Thermal State
A new kind of quantum state is introduced, which can be generated by the superposition of high-order (N) photon addition to two-mode thermal state (SPA-TMTS). By using the P-representation of thermal state, the n...
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Article
Nonclassicality of Coherent Photon-Subtracted Two Single-Modes Squeezed Vacuum State
We introduce a two-mode non-Gaussian state, generated by nonlocal coherent photon-subtraction (CPS) from two single-mode squeezed vacuum states (TSSV). Its normalized factor is turned out to be related with a ...
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Article
Nonclassicality and Decoherence of Photon-Subtraction Squeezing-Enhanced Thermal State
We introduce a kind of non-Gaussian state—photon-subtracted squeezing-enhanced thermal state (PSSETS) characteristics by two-squeezing parameters (λ,r). Its normalization factor is a Legendre polynomial of two-sq...
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Article
The Squeezing Effect of Three-Mode Operator as an Extension from Two-Mode Squeezing Operator
We theoretically study the squeezing effect in a 3-wave mixing process, generated by the operator $S_{3}\equiv \exp[\mu(a_{1}a_{2}-a_{...
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Article
Kraus Operator-Sum Representation and Time Evolution of Distribution Functions in Phase-Sensitive Reservoirs
Using the thermal entangled state representation 〈η|, we examine the master equation (ME) describing phase-sensitive reservoirs. We present the analytical expression of solution to the ME, i.e., the Kraus operato...
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Article
Wigner Function, Husimi Function and Tomogram of Atomic Coherent State as Energy Eigenstate of Two Coupled Oscillators
In this work, we find that a set of energy eigenstates of the Hamiltonian of two coupled oscillators can be classified as the atomic coherent state in the Schwinger Bosonic realization. The statistical propert...
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Article
Application of Generalized EPR Entangled State in Quantum Teleportation
We show how the generalized EPR entangled state |η,θ〉 generated by an asymmetric beamsplitter can be directly applied to quantum teleportation to make detailed analysis and calculation. In the whole process of te...
