Lecturer A/Prof R Malaney

**Announcements
25/06/2018**

**Class
complete.**

If
you are interested in pursuing a PhD in quantum communications –please see the
link below. You can register your interest via this link. Deadline July 19^{th}
2018.

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Lecture material and assignment material available from download link below

Download Link (password provided at first class)

This course does not assume any knowledge of standard communication networks or quantum physics. The required material will form the early part of the course. However, trained communication specialists will find some material familiar as will trained physicists. The course focuses on the emerging new world where communication and quantum physics meet. Quantum Communications will become main-stream over the next 20 years. Commercial deployments of ultra-secure networks based on quantum cryptography have already commenced. Breakthroughs in the use of quantum physics to enhance communications are emerging at a rapid pace. Quantum networks will also form the communication links between future distributed quantum computers. Quantum networks are very much in the news and the links at the bottom of this page provide some further background material.

*UNSW Handbook Entry*

*This course is aimed at Graduate Engineers and
Physicists wishing to understand the exciting new world of Quantum
Communications. Quantum Communications and Quantum Networks are anticipated to
be the core networking technologies of the 21st century. In fact these
communication systems have already appeared in the commercial world in many
variations. This course introduces the keys concepts important for
understanding, testing, analyzing and improving the performance of quantum
communication networks. It will have particular focus on actual quantum
networks currently being deployed and the use of such networks for secure
information transfer. Designed from an engineering perspective the course will
first introduce the basic quantum physics that underlies quantum communication
principles. It will then introduce and explore the key concepts that drive
quantum communications such as Quantum Entanglement, Quantum Teleportation, The
No Cloning Theorem, Quantum Cryptography; Privacy Amplification and Error
Correction for Quantum Keys.*

**Syllabus: **

**Introductory Lecture**. Who wants to be a “Quantum Engineer”? Why study Quantum Communications and Quantum networks? What’s wrong with classical networks? What classical communication and networking issues will we cover? What Quantum physics will we cover in the course?**Overview of Commercial Quantum Networks**. The future is now. What “real engineers” are now building. Overview of current Quantum networks both deployed commercially and those currently in prototype**Photon Polarization.**Maxwell’s equations revisited**.**Applications of polarization in Quantum Networks.**General Quantum Variables and Qubits**. Applications of quantum variables in Quantum Networks**Composite Quantum Systems**. Applications of quantum systems in Quantum Networks.**Quantum Entanglement**. Why Einstein was wrong and right at same time. Why is entanglement important for Quantum Communications.**Quantum Communications**. Superdense coding. Breaking the classical information barrier.**Experimental Quantum Teleportation of Qubits**. Engineering sources of Entangled Photons. Why is this hard? What is state-of-the art. What does future predict?**The No Cloning Theorem**. Copying classical information is easy, but try copying quantum information.**Quantum Teleportation**. An application of composite qubits and entanglement**Review of Classical Cryptography. RSA**Algorithms and why classical encryption is defeated by Quantum Computers**Quantum Cryptography**. The Bennett-Brassard Protocol for Quantum key distribution.**Quantum Cryptography**. Eckert’s Protocol for Quantum key distribution using entanglement.**Quantum Cryptography**. What do we actually mean be “secure” – a quantitative definition based on probability of deciphering.**Review of Classical Error Correcting Codes****.**Hamming distance, Linear Codes, Generator Matrices, and all that jazz.**Error Corrections for Quantum Keys.**Error correcting codes once quantum physics is thrown in**Privacy Amplification.**Why error correction leaks information to a potential adversary and how to combat this with privacy amplification.**Continuous Variables****Advanced Quantum Error Correction (optional).**

**Text(s) and Reference(s):**

**Class Text: **Protecting Information: From Classical
Error Correction to Quantum Cryptography, S. Loepp & W. K. Wooters,
Cambridge Press, 2006

**Secondary Text:** Quantum Computation and Quantum
Information, M. Nielsen and I. L. Chuang, Cambridge Press, 2006.

Other Background papers and links to be added

Purchase Class Text Online (ebook or paperback). Note UNSW Library has online* copies and hardcopies.

**Library online copies have limited number of people
who can view at any one time.*

News:

China
launches world’s first quantum satellite –ABC News

Latest updates on quantum communication from physics.org

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