## Communication over a quantum channel with feedback |

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### Contents

Quantum Measurement Theory | 7 |

General Theory of the Feedback Optical | 29 |

The Binary Symmetric Markov Source Problem | 52 |

3 other sections not shown

### Common terms and phrases

4-ary receiver approximation error binary message binary symmetric Markov bit-error performance bit-error probability characterized communication system Comparison of Exact correct decision corresponding decide density operator depend detection operators error bursts error correction error-correcting codes estimation theory Exact and Approximate expC-Ej/hv expressions feedback channel feedback receiver feedback strategy feedback system Figure given global optimum Hilbert space incorrect inner products Measurement Theory message sequence message symbol minimizing obtained optimal OPTIMUM RECEIVER optimum sequential receiver order nodes orthonormal orthonormal basis performance gain Pn P1Q possible Pr(C Pr(decide Pr(e Pr(eJ Pr(eoo Pr(S Pr(send Pr(X Pr(XN Pr(Y PrCe Prfe QUANTUM CHANNEL quantum communication quantum measurements RECEIVER PERFORMANCE receiver-state correction recent decision scenario tree sequential detection sequential measurements signal amplitudes signalling energy signalling strategy Solutions For PrCeJ solved step structured receiver subsystem symmetric Markov source transmitted