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- W4386907120 abstract "Coherent-state representations are a standard tool to deal with continuous-variable systems, as they allow one to efficiently visualize quantum states in phase space. Here, we work out an alternative basis consisting of monomials on the basic observables, with the crucial property of behaving well under symplectic transformations. This basis is the analogue of the irreducible tensors widely used in the context of SU(2) symmetry. Given the density matrix of a state, the corresponding expansion coefficients in that basis constitute the state multipoles, which describe the state in a canonically covariant form that is both concise and explicit. We use these quantities to assess properties such as quantumness or Gaussianity." @default.
- W4386907120 created "2023-09-21" @default.
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- W4386907120 date "2023-09-18" @default.
- W4386907120 modified "2023-09-27" @default.
- W4386907120 title "Covariant operator bases for continuous variables" @default.
- W4386907120 doi "https://doi.org/10.48550/arxiv.2309.10042" @default.
- W4386907120 hasPublicationYear "2023" @default.
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