1. The Security of Quantum Cryptography

2. Vasil Penchev, Assoc. Prof., PhD
esnips.com/web/vasilpenchevsnews
Institute for Philosophical Research,
Bulgarian Academy of Science

3. My story has three heroes
This is Alice
Alice has a message to Bob

4. And here is Bob
He's looking forward
to Alice's message!

5. But this is Eve!
She's eavesdropping!

6. Both Alice and Bob
know that Eve's
eavesdropping them!

7. This is Alice's secret message
"I love you!"
This is Alice's secret message
But Eve mustn't know!

8. Alice encripts her message
"I love you!"
Eve not to understand,
Alice encripts her message

9. "I love you!"
For encrypting
Alice uses a chipher

10. is encrypted differently
Her cipher is
a "one-time pad"
Each message
is encrypted differently

12. The inventors
of BB84 QKD protocol

13. Charles H. Bennett
an IBM Fellow at IBM Research

14. Gilles Brassard
Founding Director, Institut transdiscip-linaire d’informatique quantique (INTRIQ) Canada Research Chair in Quantum Information processing Université de Montréal

21. pioneered by Paul Townsend
A better approach
pioneered by Paul Townsend
University of
Cambridge
Department of
Applied Mathematics and Theoretical Physics

22. pioneered by Paul Townsend
A better approach
pioneered by Paul Townsend

23. “Quantum Love Story” by Charles H. Bennett
(based on the classic tale of Pyramus and Thysbe)

36. Artur Ekert Leigh Trapnell Professor of Quantum Physics, DAMTP,
University of Cam-
Bridge, Fellow of
King's College

37. QKD on the market

39. For encrypting
Alice has used
a QKD chipher

40. Now Bob knows
Alice
LOVES
him
Eve knows nothing
Alice knows Bob knows

41. All are happy!!!

42. HAPPY END!

43. Long Live
Quantum
Cryptography!
Turning Ends
into Happy Ones!

44. Thank You
for
Your attention!

45. Vasil Penchev
wordpress.com