Universal Blind Quantum Computation with Weak Coherent Pulses

Add to your list(s) Download to your calendar using vCal

• Vedran Dunjko (Heriot-Watt University)
• Thursday 24 May 2012, 14:15-15:15
• MR4, Centre for Mathematical Sciences.

If you have a question about this talk, please contact Paul Skrzypczyk.

The Universal Blind Quantum Computation (UBQC) protocol allows a client to perform quantum computation on a remote server. In an ideal setting, perfect privacy is guaranteed if the client is capable of producing specific, randomly chosen single qubit states. While from a theoretical point of view, this may constitute the lowest possible quantum requirement, from a pragmatic point of view, generation of such states to be sent along long distances can never be achieved perfectly.

We introduce the concept of ε-blindness for UBQC , in analogy to the concept of ε-security developed for other cryptographic protocols, allowing us to characterize the robustness and security properties of the protocol under possible imperfections. We also present a remote blind single qubit preparation protocol with weak coherent pulses for the client to prepare, in a delegated fashion, quantum states arbitrarily close to perfect random single qubit states, allowing us to efficiently achieve ε-blind UBQC for any ε >0, even if the channel between the client and the server is arbitrarily lossy.

Time permitting, and conditional on the interests of the audience, additional topics related to UBQC can also be discussed.

This talk is part of the CQIF Seminar series.

This talk is included in these lists:

• All CMS events
• CMS Events
• CQIF Seminar
• DAMTP info aggregator
• Hanchen DaDaDash
• Interested Talks
• MR4, Centre for Mathematical Sciences
• bld31

Note that ex-directory lists are not shown.