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Article
Twin-field quantum key distribution over a 511 km optical fibre linking two distant metropolitan areas
The basic principle of quantum mechanics1 guarantees the unconditional security of quantum key distribution (QKD)2–6 at the cost of forbidding the amplification of a quantum state. As a result, and despite remark...
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Article
Decoherence and Fidelity in Teleportation of Coherent Photon-Added Two-Mode Squeezed Thermal States
We theoretically introduce a kind of non-Gaussian entangled resources, i.e., coherent photon-added two-mode squeezed thermal states (CPA-TMSTS), by successively performing coherent photon addition operation to...
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Article
Open AccessQuantum gambling based on Nash-equilibrium
The problem of establishing a fair bet between spatially separated gambler and casino can only be solved in the classical regime by relying on a trusted third party. By combining Nash-equilibrium theory with q...
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Article
Statistical Properties of Photon-Added Two-Mode Squeezed Coherent States
The nonclassical and non-Gaussian quantum states—photon-added two-mode squeezed coherent states have been theoretically introduced by adding multiple photons to each mode of the two-mode squeezed coherent stat...
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Article
A New Kind of Bipartite Coherent-Entangled State and Its Applications in Quantum Optics
A new kind of bipartite coherent-entangled state (CES) is introduced in the two-mode Fock space which exhibits the properties of both coherent state and entangled state. The set of CESs make up a complete and ...
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Article
Generalized Canonical Ward Identities
In the framework of Faddeev-Senjanovic (FS) path-integral quantization, CP 1 nonlinear σ model coupled to Non-Abelian Chern-Simons (CS) fields is quantized. Generalized canonical Ward iden...
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Article
Quantal Symmetries in the Non-Linear Sigma Model with Maxwell–Chern–Simons Term
The quantal symmetry property in the CP1 non-linear sigma model with Abelian–Maxwell–Chern–Simons (AMCS) term in 2 + 1 dimensions is studied. In the Coulomb gauge, the system is quantized in the Faddeev–Senjan...
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Article
Quantal Symmetries in the Nonlinear Sigma Model with Maxwell–Chern–Simons Term
The quantal symmetry property in the CP1 nonlinear sigma model with Abelian–Maxwell–Chern–Simons (AMCS) term in 2 + 1 dimensions is studied. In the Coulomb gauge, the system is quantized in the Faddeev–Senjanovic...