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Entanglement-Assisted Capacity of Quantum Channels with Side Information

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arxiv 1909.09992 v3 pith:OHIF35SV submitted 2019-09-22 cs.IT math.ITquant-ph

Entanglement-Assisted Capacity of Quantum Channels with Side Information

classification cs.IT math.ITquant-ph
keywords quantumchannelentanglement-assistednon-causalcapacitycausalenvironmentinformation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Entanglement-assisted communication over a random-parameter quantum channel with either causal or non-causal channel side information (CSI) at the encoder is considered. This describes a scenario where the quantum channel depends on the quantum state of the input environment. While Bob, the decoder, has no access to this state, Alice, the transmitter, performs a sequence of projective measurements on her environment and encodes her message accordingly. Dupuis established the entanglement-assisted capacity with non-causal CSI. Here, we establish characterization in the causal setting, and also give an alternative proof technique and further observations for the non-causal setting.

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Cited by 3 Pith papers

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  3. Quantum Action-Dependent Channels

    quant-ph 2025-10 unverdicted novelty 6.0

    Derives achievable rates for message transmission over quantum action-dependent channels with causal or non-causal side information, including a depolarization memory case study.