Derives explicit capacity formulas for multimode quantum Gaussian channels, proves optimality of increasing modes under power constraint, and gives analytical expressions for ensemble-averaged Holevo capacity under random passive transformations plus homodyne/heterodyne cases.
Bounds for the quantity of information transmitted by a quantum communication channel,
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Capacity of multimode quantum Gaussian channels
Derives explicit capacity formulas for multimode quantum Gaussian channels, proves optimality of increasing modes under power constraint, and gives analytical expressions for ensemble-averaged Holevo capacity under random passive transformations plus homodyne/heterodyne cases.