Just some nice dudes and a lady, 4 italians spread around the world and one NY guy
So we are:
- Lisa Bombieri
- Andrea Maiani
- Leonardo Placidi
- Ciro Gus Salcedo
- Alessandro Summer
Nodes of the network
- S: Messaging server
- I: Interface (authentication server)
- U1, U2, U3, ... : Users
- a main server used to communicate between different users classically
- the ‘quantum servers’ are used to communicate only with the Intermediate interface
- The intermediate interface communicate with the Quantum Computer assembling a circuit that implements Ekert91 or BB84 depending on the input received by a couple of users
- The basis used for the qkd protocol are then shared between the users passing through the main server (S)
- Two users communicate with a main server classically
- When one of the two write the command ‘/BASIS’
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- A protocol between the E91 and BB84 is chose
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- Alice generates automatically her basis and the bitstring (in the case the BB84 is selected)
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- Bob generates automatically his basis
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- Both the txt files are sent to the private servers that communicates them to the intermediate interface
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- The intermediate interface assemble the circuit and run it on the QuTech computer
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- Two output are created and sent back to the two users
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- Comparing the basis using the main server the quantum-key is selected
- The communication between the two users is now quantic secure using the quantum-key to encrypt and decrypt the files privately
We chose to work on the Quantum Key Distribution challenge. We split up into two groups: one working on the classical end and another on the quantum. On the classical end, we had a task brand new to all of us, network programming. We decided to implement our system as a chatroom where the two users could talk to each other classically and each user had a personal server for sending quantum information to the quantum computer. We underestimated the complexity of this task as the network code was difficult to produce in the first place, given our experience. The challenge ended around when we were working on integrating the classical and quantum system. On the quantum end, we replicated the BB84 and E91 algorithm and developed a format from sending classical instructions from the users to the quantum interface.