The Quantum Internet: Ultrafast and Safe from Hackers

Foreword
Introductory Remarks
Contents
1 The Quantum Digital Future
	1.1	Digital Visions
	1.2	Revolutionary Quantum Physics
	1.3	The Quantum Satellite
	1.4	Intercontinental Quantum Telephony
	1.5	Objective Randomness
	1.6	Quantum Entanglement
	1.7	Spooky Action at a Distance
	1.8	Bell’s Theorem
	1.9	Quantum Information
2 The Quantum Internet
	2.1	Technological Principles
	2.2	Network Topology
	2.3	Quantum Interfaces
		2.3.1	Nobel Prize for Preliminary Work
		2.3.2	Implementation (Examples)
	2.4	Possible Applications
		2.4.1	Protection, Coordination and Processing of Data
		2.4.2	Tokyo QKD Network
		2.4.3	2000 km High-End Backbone
		2.4.4	The Vienna Multiplex QKD-Web
		2.4.5	The Quantum Cloud
	2.5	The Quantum Computer
		2.5.1	The Qubit—A Multitasking Genius
		2.5.2	Quantum Software
		2.5.3	Quantum Logic Gates
		2.5.4	Concepts
		2.5.5	Implementations (Examples)
		2.5.6	Quantum Supremacy
	2.6	Tap-Proof Data Transmission
		2.6.1	Classical Encryptions
		2.6.2	Quantum Key Distribution (QKD)
		2.6.3	Quantum Cryptography with Entangled Photons
	2.7	Quantum Teleportation
		2.7.1	Teleportation of Qubits
		2.7.2	Implementation on Atoms
	2.8	Quantum Repeaters
		2.8.1	How It Works
		2.8.2	Entanglement Swapping
	2.9	Vision and Reality
		2.9.1	Agenda 2030—The First Global Quantum Internet?
		2.9.2	Future Zone: The Universal Q-Hypernet
3 For Deeper Understanding
	3.1	Workshop: Quantum Optical Systems
	3.2	Phase Cryptography
	3.3	Schrödinger’s Cat
	3.4	Workshop: Beaming People—Is that Possible?
	3.5	A Journey Into the Future
	3.6	The No-Cloning Theorem
	3.7	Closing Remarks
References
Index