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Quantum entanglement enables important computing applications such as quantum key distribution. Based on quantum entanglement, quantum networks are built to provide long-distance secret sharing between two remote communication parties. Establishing a multi-hop quantum entanglement exhibits a high failure rate, and existing quantum networks rely on trusted repeater nodes to transmit quantum bits. However, when the scale of a quantum network increases, it requires end-to-end multi-hop quantum entanglements in order to deliver secret bits without letting the repeaters know the secret bits. This work focuses on the entanglement routing problem, whose objective is to build long-distance entanglements via untrusted repeaters for concurrent source-destination pairs through multiple hops. Different from existing work that analyzes the traditional routing techniques on special network topologies, we present a comprehensive entanglement routing model that reflects the differences between quantum networks and classical networks as well as a new entanglement routing algorithm that utilizes the unique properties of quantum networks. Evaluation results show that the proposed algorithm Q-CAST increases the number of successful long-distance entanglements by a big margin compared to other methods. The model and simulator developed by this work may encourage more network researchers to study the entanglement routing problem.
I am and why I'm so sane from music and a cruise. I will present our paper concurrent entanglement routing for Quantum networks and Designs. It's a joint work with Professor. Let's start with the fundamental building block for the pond at work, and hang of it is a stem correlation of three particles or cut. It means that even if the result will be for the tree together results for books, besides is preserved even if they are separated by a large distance,
enable security or transmission, This is achieved with a house of Tasco. Communication. A more complicated version is also available to sign up for the mistake of a particle, besides remote, quanergy, distribution, and other applications are in the workflow of beauty and talent. The receipts are nutrients for Madison Bob about the result of the PSI information. This message is typically cheapest and share a tree. How this works lowest Translate Like a figure shows, those are connected to form a condom that work. And if your nose may wish to share a remote
properties on Cartoon Network and designed to deliver a specialized Walk In A specialized apologies. The summer assignments are a flexible. I know how old is considered. We make stuff for work in different. We allowed to have different ways, further consider local and state exchanges and support multiple source and destination Paris at the same time slot. We play sound instead of the existing geographical distance and is not additive to start design. The goal of our proposal is to deliver the maximum number of elements, based on communication
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apology is generated from a reference to gjusta primaris space season 1. Is spider silk, accumulated distribution function. That's what the results are calculated in all possible. For a PS2 cast is also the most because I work with a neuroscientist. We have out of the sky. We invited was a contribution of recovery pass to the overall surface for both to having with recurrent. The truth has performed slightly better, while chew cast enjoys a larger Improvement. Conclusion
in communication from Castle Network, the slaughter time and probabilistic monsters. We propose to our tourism is down. Never mobile well with much more smart. Thank you for listening. Excellent, thank you. For that awesome. Thought we have a question coming in from slack and other. Folks, please feel free to ask away from Mark Marcus legner from pth. Could you briefly comment on current real-world? Deployments are quantum networks and plans for the near future. Thank you. So, so we have some
research on this end shower knowledge, the current deployed and they will send the information including the tower part in us and the peacock in Vietnam and the toll choo, choo cable network and the some Chinese networks and the we are also expecting the like the realization of the condom that works like the the sure Rasheeda net worth. What is a shower knowledge is not a realized her in the industry or in the in the lab but we're pretty close to real of Charles repeater network.
Add appointment such as this. What does this, what does broadcast multicast start to look like? Is it possible to have a similar kind of analog in a quantum network? So so basically we shall not a clone perfectly clone the quantum state of a particle. So actually we cannot do some multi customer brought Alice, we use a week where I actually broke something, the classical information. If we are going to broadcast the, the quantum information, I believe it's hard to to realize because we have some theoretical limitation.
Great. A question, just came in from June June. He says, his kind of a silly question, but unfamiliar probably a question that a lot of us have as we're in this area. But we're unfamiliar with the EPS, could you compare it with a traditional Network performance metrics? And we talked about how we will perform in the future. So it is there like a direct analog between EPs and sort of like wow also a good crashing. So in the traditional view of the service is compared shower
classical internet. We get we get a makeup megabytes to gigabytes per second or even larger bandwidth. Pads for the continents of the FCS is entangled are entangled Cuban pair per second of her part time slot. So basically I thought maybe a 1 minutes or math skill and it's not it's it's definitely not one but it's a it's a long time before. It's already a long time for a time slot and entangled beds. Sure bets. So if we in cold one classical bed into one. We got one bit at a time slot. If we go at 1, if she has very low compared to the class code
now works. So we are We're focusing on the security here, like the cover of perfect competition ality in the car on my work is, so I like we can't deliver achieved using the fun that Ricky and the, we still use the classical communication and a tooth to tutor Center, the books of data, as we used to be generated from lokanam, that works like that, established the key. And then you some key generation algorithm and then Becca. What did you say? Thank you so much. Does a fantastic. Thank you for the questions he
wants to follow up. Please follow up and say, thank you again. That was really an interesting talk. Let them, let me ask you a few questions. First, business measurement EPS, this throughput measurement? Can you tell us a little bit about how that compares to let's say more traditional networking measurements and give us some idea of the real scale of that time. Those time slots, this question is also a previous track and what I'm going to see you about that if she has since it's short for the entanglement in Tango the best
time slot so compared to other classical Network. It's A very like us more bandwidth card because we have a, like a 10, if she has, but it's about 10 best 10 in time of bass per times. So if it's very, very small compared to our traditional Network, like how we have a giga base for a second that works. Some powerful nuke and Powerful Network. So we consider using the quantum entanglement to deliver the, the security Chief and the, you still use the traditional communication
to to send the large box of data. And the, you just use the key from the Quan Network. I see. Okay. And can you tell us and can you give us some indication of what the actual progress, to-date building actual Quantum Hardware in the quantum for networking that is you know I do they exist or are they right now? Just on paper. Hogs wallow, so she our knowledge, they are our existing no condom that works but the existing column that works or rely on different. A slightly different model compared to us because
the Tracer repeaters, that means the repeater store. The entangled States into into, it is, memory. And in that way, it's not a direct and angle between the source and definite destination, and if they are available under this model is there are available many, many, many systems are available including the dark Hearts, C clock via a Vietnam show Kaden at work. And hope you getting out of work, and they are also some Oakland hours in China. Have you had access to any of this Hardware while you're doing experiments or are you doing it entirely with stimulation
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