Pre-Distribution of Entanglements in Quantum Networks

05/09/2022
by   Mohammad Ghaderibaneh, et al.
0

Quantum network communication is challenging, as the No-Cloning theorem in quantum regime makes many classical techniques inapplicable. For long-distance communication, the only viable approach is teleportation of quantum states, which requires a prior distribution of entangled pairs (EPs) of qubits. Establishment of EPs across remote nodes can incur significant latency due to the low probability of success of the underlying physical processes. To reduce EP generation latency, prior works have looked at selection of efficient entanglement-routing paths and simultaneous use of multiple such paths for EP generation. In this paper, we propose and investigate a complementary technique to reduce EP generation latency–to pre-distribute EPs over certain (pre-determined) pairs of network nodes; these pre-distributed EPs can then be used to generate EPs for the requested pairs, when needed, with lower generation latency. For such an pre-distribution approach to be most effective, we need to address an optimization problem of selection of node-pairs where the EPs should be pre-distributed to minimize the generation latency of expected EP requests, under a given cost constraint. In this paper, we appropriately formulate the above optimization problem and design two efficient algorithms, one of which is a greedy approach based on an approximation algorithm for a special case. Via extensive evaluations over the NetSquid simulator, we demonstrate the effectiveness of our approach and developed techniques; we show that our developed algorithms outperform a naive approach by up to an order of magnitude.

READ FULL TEXT
research
12/21/2021

Efficient Quantum Network Communication using Optimized Entanglement-Swapping Trees

Quantum network communication is challenging, as the No-cloning theorem ...
research
09/20/2019

Modeling and Designing Routing Protocols in Quantum Networks

Quantum networks enable a number of important applications such as quant...
research
05/31/2022

Multi-Entanglement Routing Design over Quantum Networks

Quantum networks are considered as a promising future platform for quant...
research
05/30/2021

Entanglement Rate Optimization in Heterogeneous Quantum Communication Networks

Quantum communication networks are emerging as a promising technology th...
research
07/26/2019

Distributed Routing in a Quantum Internet

We develop new routing algorithms for a quantum network with noisy quant...
research
07/19/2022

Maximizing Entanglement Routing Rate in Quantum Networks: Approximation Algorithms

There will be a fast-paced shift from conventional network systems to no...
research
12/19/2019

Imbalance measure and proactive channel rebalancing algorithm for the Lightning Network

Making a payment in a privacy-aware payment channel network is achieved ...

Please sign up or login with your details

Forgot password? Click here to reset