| Preface | 5 |
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| Organization | 7 |
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| Table of Contents | 9 |
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| QuantumComm 2009 | 9 |
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| Session 1 | 9 |
| Tailoring the Spatio-temporal Bandwidth of Biphotons via the Non-factorable Structure of Entanglement | 13 |
| Introduction | 13 |
| Type I Parametric Down Conversion | 14 |
| Type II Parametric Down Conversion | 21 |
| Conclusions | 26 |
| References | 27 |
| Entanglement Generation by a Three-Dimensional Qubit Scattering: Concurrence vs. Path (In)Distinguishability | 29 |
| Introduction | 29 |
| Setup, Scattering, and Concurrence | 30 |
| Entanglement and Path (In)Distinguishability | 32 |
| Full-Order Contributions and Renormalization | 34 |
| Summary | 35 |
| References | 37 |
| Session 2 | 9 |
| Multipartite Entangled Codewords for Gaussian Channels with Additive Noise and Memory | 38 |
| Introduction | 38 |
| The Model | 39 |
| Block Encoding/Decoding Schemes | 40 |
| Optimal Transmission Rates | 42 |
| Discussion | 44 |
| Conclusion | 45 |
| References | 45 |
| High-Speed Single-Photon Detection Using 2-GHz Sinusoidally Gated InGaAs/InP Avalanche Photodiode | 46 |
| Introduction | 46 |
| Sinusoidally Gated InGaAs/InP Avalanche Photodiode | 47 |
| Detector Performance | 48 |
| Conclusion | 49 |
| References | 50 |
| Session 3 | 9 |
| Local Transformation of Two EPR Photon Pairs into a Three-Photon W State Using a Polarization Dependent Beamsplitter | 51 |
| Introduction | 51 |
| Theoretical Analysis | 52 |
| Optimal Method | 52 |
| Experimental Method | 54 |
| Experimental Demonstration | 55 |
| Conclusion | 56 |
| References | 57 |
| Entanglement Degree Characterization of Spontaneous Parametric-Down Conversion Biphotons in Frequency Domain | 58 |
| Introduction | 58 |
| Aim of the Paper | 59 |
| Theoretical Considerations | 59 |
| Experimental Set Up and Results | 61 |
| Measure with a 10 mm LiIO3 Crystal | 63 |
| Measure with a 5 mm LiIO3 Crystal | 65 |
| Conclusions and Future Plans | 66 |
| References | 66 |
| Session 4 | 9 |
| Matter-Matter Entanglement for Quantum Communication | 68 |
| References | 69 |
| Manipulating Frequency Entangled Photons | 70 |
| Introduction | 70 |
| Experimental Setup | 71 |
| Theoretical Modelisation and Experimental Results | 73 |
| TowardsBellTests | 74 |
| Conclusion | 77 |
| References | 77 |
| Ground-State Entanglement Gives Birth to Quantum Energy Teleportation | 78 |
| Introduction | 78 |
| Ground-State Entanglement and Negative Energy Density | 79 |
| QET Protocol | 80 |
| Breaking Ground-State Entanglement by Measurements | 82 |
| QET for Other Systems | 84 |
| References | 85 |
| Network Games with Quantum Strategies | 86 |
| Introduction | 86 |
| EWL Protocol | 87 |
| Local Formation Games | 87 |
| Classical and Quantum Version | 88 |
| Global Formation Games | 89 |
| Congestion Games | 91 |
| Quantum Version of Pigou's Example | 91 |
| Conclusions | 92 |
| References | 93 |
| Session 5 | 10 |
| Optical Free-Space Communication on Earth and in Space Regarding Quantum Cryptography Aspects | 94 |
| Introduction | 94 |
| High Altitude Platform-to-Ground Links | 95 |
| Aircraft-to-Ground Links | 97 |
| Satellite-to-Ground Links | 99 |
| Further Developments | 103 |
| Applicability of Quantum Cryptography to StandardFSO Links | 104 |
| Conclusions | 106 |
| References | 106 |
| Feasibility Analysis for Quantum Key Distribution between a LEO Satellite and Earth | 108 |
| References | 111 |
| Enhanced Free Space Beam Capture by Improved Optical Tapers | 112 |
| Introduction | 112 |
| Noise and Attenuation | 113 |
| Homodyne Detection | 113 |
| Atmospheric Fluctuations | 113 |
| Improved Optical Tapers | 114 |
| Taper Geometry | 115 |
| Numerical Simulation | 116 |
| Outlook | 117 |
| References | 118 |
| Entanglement Based Quantum Key Distribution Using a Bright Sagnac Entangled Photon Source | 120 |
| Introduction | 120 |
| Experimental Setup | 121 |
| Results | 124 |
| Discussion | 125 |
| Conclusions | 126 |
| References | 127 |
| Solutions for Redundancy-Free Error Correction in Quantum Channel | 129 |
| Introduction | 129 |
| General Quantum Channel | 130 |
| Redundancy-Free Channel | 131 |
| Generalized Redundancy-Free Channel | 133 |
| The Redundancy-Free Error Correction | 133 |
| Probabilistic Quantum Error Correction | 134 |
| Conclusions | 135 |
| References | 136 |
| Session 6 | 10 |
| Two-Way Quantum Communication in a Single Optical Fiber with Active Polarization Compensation | 137 |
| Introduction | 137 |
| Experimental Theory and Setup | 138 |
| Experimental Results | 140 |
| References | 142 |
| Passive Decoy State Quantum Key Distribution | 144 |
| Introduction | 144 |
| Passive Decoy State QKD Setup | 145 |
| Lower Bound on the Secret Key Rate | 148 |
| Evaluation | 150 |
| Conclusion | 151 |
| Re
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