Understanding Quantum Networking: Where Are We and What Can We Expect?.

Mohamed Barhoumi, Milad Ghadimi, Swastik Anupam +2 more

In the upcoming frontier of quantum computing and telecommunications, especially 6G, which is an area under extensive research and development, quantum synchronisation plays a very immersive role. It presents us with unprecedented development in data privacy, network security, and latency. Employing quantum synchronisation, we synchronise three qubits by calculating their expectation values before and after the applications of the gates. Also, the time evolution of the expectation values of the spins ⟨σ1,2,3⟩ are also accomplished here. Before that, we briefly review the NTP and PTP protocols. Among the best results obtained in this study is the investigation of latency (in picosecond) between entangled qubits. Different suggestions are proposed here to improve this latency. We think that our outcomes present a forward step to understanding the significance of quantum synchronisation in classical network communications.

S. Mohammed Rifas, Vivia Mary John

Guillermo Valverde, Igor García-Olaizola, Giannicola Scarpa +1 more

Tensor networks were developed in the context of many-body physics as compressed representations of multiparticle quantum states. These representations mitigate the exponential complexity of many-body systems by capturing only the most relevant dependencies. Due to the formal similarity between quantum entanglement and statistical correlations, tensor networks have recently been integrated in machine learning, operating both as alternative learning architectures and as decompositions of components of neural networks. The expectation is that the theoretical understanding of tensor networks developed within quantum many-body physics leads to novel methods that offer advantages in terms of computational efficiency, explainability, or privacy. Here we review the use of tensor networks in the context of machine learning, providing a critical assessment of the state of the art, the potential advantages, and the challenges that must be overcome.

Nilesh Sharma, Saravana Vilashini M, Gopala Krishnan +6 more

Thiago R. Raddo, Simon Rommel, Victor Land +2 more

The widespread acceptance and deployment of quantum key distribution (QKD) for data encryption requires a better understanding of the technology concerning device-to-system interfacing and network performance from current vendors. Despite the existence of a few QKD testbeds worldwide, they are neither open-access nor capable of validating components from different system and component vendors business cases. User trials in testbeds have yet to yield a robust, open business case. This paper introduces the open-access QKD testbed currently being developed in the Eindhoven region which will focus on the creation of an open environment for end-to-end validation of distinct business cases, QKD security proofs, and technology certification and standardization. At this site, a quantum-to-the-home network scenario for providing quantum encryption as a service on demand, for end-to-end security to end-users, is also proposed. It is expected that this testbed will lead to a better understanding of what further developments are required for current networks to be augmented with QKD.

Muneer Alshowkan, Nageswara S. V. Rao, Joseph C. Chapman +5 more