On the 24th of April, the 6th edition of the Wednesday Evening Training on Quantum computing was held.
The topic was: how quantum computing could effect encryption.
In this session, we had a great discussion on how long the most modern supercomputer would take to calculate every single answer in an RSA 2048 bit encryption calculation. And how a Quantum Computer could help.
The time that it would take was estimated to be much longer then the universe will be in existence. That is why this form of encryption is very secure and used everywhere today. However, immense quantum parallelism would enable quantum computers to break RSA within days or hours.
This would mean that current cryptography would be completely useless when quantum computers are ready. To make matters worse, loads of data is already logged today by companies and governments. This means that data that is secure today, will not be protected tomorrow. We should, therefore, start to think about how long we want to keep our data safe.
Thanks Julian, for sharing your knowledge with us!
Take a look at my post: "Quantum computing: an introduction and a lot of links to resources":
https://hansrontheweb.blogspot.com/2018/11/quantum-computing-introduction.html
Or visit my YouTube channel on Quantum Computing: https://www.youtube.com/playlist?list=PLSiMhBs48YvWecXqKP00NGuiP5UD6RoCk
On specific topics:
Bra–ket notation: https://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation
The topic was: how quantum computing could effect encryption.
In this session, we had a great discussion on how long the most modern supercomputer would take to calculate every single answer in an RSA 2048 bit encryption calculation. And how a Quantum Computer could help.
The time that it would take was estimated to be much longer then the universe will be in existence. That is why this form of encryption is very secure and used everywhere today. However, immense quantum parallelism would enable quantum computers to break RSA within days or hours.
This would mean that current cryptography would be completely useless when quantum computers are ready. To make matters worse, loads of data is already logged today by companies and governments. This means that data that is secure today, will not be protected tomorrow. We should, therefore, start to think about how long we want to keep our data safe.
Thanks Julian, for sharing your knowledge with us!
Further reading
Do you want to read more on the topics in this post?Take a look at my post: "Quantum computing: an introduction and a lot of links to resources":
https://hansrontheweb.blogspot.com/2018/11/quantum-computing-introduction.html
Or visit my YouTube channel on Quantum Computing: https://www.youtube.com/playlist?list=PLSiMhBs48YvWecXqKP00NGuiP5UD6RoCk
On specific topics:
Bra–ket notation: https://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation
Quantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation: https://www.youtube.com/watch?v=pBh7Xqbh5JQ
Conjugate transpose: https://en.wikipedia.org/wiki/Conjugate_transpose
Bell state: https://en.wikipedia.org/wiki/Bell_state
Quantum Computation: a journey on the Bloch sphere: https://medium.com/@quantum_wa/quantum-computation-a-journey-on-the-bloch-sphere-50cc9d73530
Bloch sphere: https://en.wikipedia.org/wiki/Bloch_sphere
Bloch Sphere Simulation: https://eecs.ceas.uc.edu/~cahaymm/blochsphere/index.html
What are theta, phi and lambda in cu1(theta, ctl, tgt) and cu3(theta, phi, lam, ctl, tgt)? What are the rotation matrices being used? https://quantumcomputing.stackexchange.com/questions/2707/what-are-theta-phi-and-lambda-in-cu1theta-ctl-tgt-and-cu3theta-phi-lam
The Bloch Sphere (PDF): http://www.vcpc.univie.ac.at/~ian/hotlist/qc/talks/bloch-sphere.pdf
Grover’s Algorithm: https://quantumexperience.ng.bluemix.net/proxy/tutorial/full-user-guide/004-Quantum_Algorithms/070-Grover's_Algorithm.html
Grover - A fast quantum mechanical algorithm for database search: http://arxiv.org/abs/quant-ph/9605043
No comments:
Post a Comment