Abstract
By employing the bipartite entangled state representation and the technique of integration within an ordered product of operators, the classical complex wavelet transform of a complex signal function can be recast to a matrix element of the squeezing-displacing operator U 2(μ, σ) between the mother wavelet vector 〈ψ| and the two-mode quantum state vector |f〉 to be transformed. 〈ψ|U 2(μ, σ)|f〉 can be considered as the spectrum for analyzing the two-mode quantum state |f〉. In this way, for some typical two-mode quantum states, such as two-mode coherent state and two-mode Fock state, we derive the complex wavelet transform spectrum and carry out the numerical calculation. This kind of wavelet-transform spectrum can be used to recognize quantum states.
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Work supported by the provincial natural science research program of higher education institutions of Anhui province under Grants KJ2013A258 and KJ2013A261.
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Song, J., Zhou, J., Yuan, H. et al. Complex Wavelet Transform of the Two-mode Quantum States. Int J Theor Phys 55, 3597–3606 (2016). https://doi.org/10.1007/s10773-016-2988-9
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DOI: https://doi.org/10.1007/s10773-016-2988-9