Quantum entanglement Archives - Page 2 of 4 - IEEE Transactions on Quantum Engineering

Harnessing the Power of Long-Range Entanglement for Clifford Circuit Synthesis

May 16, 2024Willers Yang, Patrick RallQuantum ComputingCodes, Computer architecture, Integrated circuit modeling, Logic gates, Quantum entanglement, Qubit, Rotation measurement

In superconducting architectures, limited connectivity remains a significant challenge for the synthesis and compilation of quantum circuits. We consider models of entanglement-assisted computation where long-range operations are achieved through injections of large Greenberger–Horne–Zeilinger (GHZ) states. These are prepared using ancillary qubits acting as an “entanglement bus,” unlocking global operation primitives such as multiqubit Pauli rotations […]

Reliable Quantum Communications Based on Asymmetry in Distillation and Coding

May 10, 2024Lorenzo Valentini, René Bødker Christensen, Petar Popovski, Marco ChianiQuantum InternetEncoding, Protocols, Quantum computing, Quantum entanglement, Qubit, Reliability, Teleportation

The reliable provision of entangled qubits is an essential precondition in a variety of schemes for distributed quantum computing. This is challenged by multiple nuisances, such as errors during the transmission over quantum links, but also due to degradation of the entanglement over time due to decoherence. The latter can be seen as a constraint […]

On the Bipartite Entanglement Capacity of Quantum Networks

February 16, 2024Gayane Vardoyan, Emily van Milligen, Saikat Guha, Stephanie Wehner, Don TowsleyQuantum InternetCapacity planning, Multiplexing, Probabilistic logic, Quantum entanglement, Quantum networks, Routing, Topology

We consider the problem of multipath entanglement distribution to a pair of nodes in a quantum network consisting of devices with nondeterministic entanglement swapping capabilities. Multipath entanglement distribution enables a network to establish end-to-end entangled links across any number of available paths with preestablished link-level entanglement. Probabilistic entanglement swapping, on the other hand, limits the […]

Tools for the Analysis of Quantum Protocols Requiring State Generation Within a Time Window

January 31, 2024Bethany Davies, Thomas Beauchamp, Gayane Vardoyan, Stephanie WehnerQuantum InternetComputational modeling, Performance evaluation, Probabilistic logic, Protocols, Quantum entanglement, Quantum networks, Qubit

Quantum protocols commonly require a certain number of quantum resource states to be available simultaneously. An important class of examples is quantum network protocols that require a certain number of entangled pairs. Here, we consider a setting in which a process generates a quantum resource state with some probability p in each time step and […]

State Preparation on Quantum Computers via Quantum Steering

January 24, 2024Daniel Volya, Prabhat MishraQuantum ComputingComputational modeling, Protocols, Quantum computing, Quantum entanglement, Quantum state, Quantum system, Qubit

Quantum computers present a compelling platform for the study of open quantum systems, namely, the nonunitary dynamics of a system. Here, we investigate and report digital simulations of Markovian nonunitary dynamics that converge to a unique steady state. The steady state is programmed as a desired target state, yielding semblance to a quantum state preparation […]

A Linear Algebraic Framework for Dynamic Scheduling Over Memory-Equipped Quantum Networks

December 11, 2023Paolo Fittipaldi, Anastasios Giovanidis, Frédéric GrosshansQuantum InternetOptical fiber networks, Quantum entanglement, Quantum networks, Qubit, Queueing analysis, Stress, Switches

Quantum internetworking is a recent field that promises numerous interesting applications, many of which require the distribution of entanglement between arbitrary pairs of users. This article deals with the problem of scheduling in an arbitrary entanglement swapping quantum network—often called first-generation quantum network—in its general topology, multicommodity, loss-aware formulation. We introduce a linear algebraic framework […]

A Linear Algebraic Framework for Dynamic Scheduling Over Memory-Equipped Quantum Networks

December 11, 2023Paolo FittipaldiQuantum InternetOptical fiber networks, Quantum entanglement, Quantum networks, Qubit, Queueing analysis, Stress, Switches

Exploiting the Quantum Advantage for Satellite Image Processing: Review and Assessment

December 4, 2023Soronzonbold OtgonbaatarQuantum ComputingHyperspectral imaging, Logic gates, Quantum annealing, Quantum computing, Quantum entanglement, Quantum mechanics, Tensors

This article examines the current status of quantum computing (QC) in Earth observation and satellite imagery. We analyze the potential limitations and applications of quantum learning models when dealing with satellite data, considering the persistent challenges of profiting from quantum advantage and finding the optimal sharing between high-performance computing (HPC) and QC. We then assess […]

Exploiting the Quantum Advantage for Satellite Image Processing: Review and Assessment

December 4, 2023Soronzonbold Otgonbaatar, Dieter KranzlmüllerQuantum ComputingHyperspectral imaging, Logic gates, Quantum annealing, Quantum computing, Quantum entanglement, Quantum mechanics, Tensors

Multiuser Entanglement Distribution in Quantum Networks Using Multipath Routing

November 2, 2023Evan SutcliffeRegularPerformance evaluation, Protocols, Quantum entanglement, Quantum networks, Qubit, Routing, Topology

Quantum networks facilitate numerous applications including secure communication and distributed quantum computation by performing entanglement distribution. For some multiuser quantum applications, access to a shared multipartite state is required. We consider the problem of designing protocols for distributing such states, at an increased rate. For this, we propose three protocols that leverage multipath routing to […]