Abstract
For an arbitary quantum state of radiation with frequency the optimum signal-to-quantum noise ratio for fixed energy (or power per unit frequency) hωN 3 has the value 4N 3(N 3+1), attainable by the squeezed coherent vacuum. The question arises as to what ρ is attainable when the vacuum is imperfect, and there are n photons present. We show that in such a situation the attainable signal-to-quantum noise ratio ρ is reduced by a factor (2n+1)2.
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References
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Allan I. Solomon, Optimal Signal-to-quantum noise ratio for deformed photons, Phys Lett. A 188:215(1994)
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© 2002 Kluwer Academic Publishers
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Feng, Y., Solomon, A.I. (2002). Optimal Signal-to-Quantum Noise Ratio in Squeezed Displaced Number States. In: Kumar, P., D’Ariano, G.M., Hirota, O. (eds) Quantum Communication, Computing, and Measurement 2. Springer, Boston, MA. https://doi.org/10.1007/0-306-47097-7_15
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DOI: https://doi.org/10.1007/0-306-47097-7_15
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-306-46307-5
Online ISBN: 978-0-306-47097-4
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