Multiport based teleportation -- transmission of a large amount of quantum information

Abstract

We analyse the problem of transmitting a number of unknown quantum states or one composite system in one go. We derive a lower bound on the performance of such process, measured in the entanglement fidelity. The obtained bound is effectively computable and outperforms the explicit values of the entanglement fidelity calculated for the pre-existing variants of the port-based protocols, allowing for teleportation of a much larger amount of quantum information. The comparison with the exact formulas and similar analysis for the probabilistic scheme is also discussed. In particular, we present the closed-form expressions for the entanglement fidelity and for the probability of success in the probabilistic scheme in the qubit case in the picture of the spin angular momentum.

arXiv comment23 pages

References in corpus (22)

• Quantum telecloning and multiparticle entanglement
• Programmable quantum gate arrays
• Asymptotic teleportation scheme as a universal programmable quantum processor
• Simplified instantaneous non-local quantum computation with applications to position-based cryptography
• Fundamental limits to quantum channel discrimination
• Quantum teleportation scheme by selecting one of multiple output ports
• Reversing Unknown Quantum Transformations: Universal Quantum Circuit for Inverting General Unitary Operations
• Optimal probabilistic storage and retrieval of unitary channels
• Quantum communication complexity advantage implies violation of a Bell inequality
• Port-based teleportation in arbitrary dimension
• Quantum speedup in the identification of cause-effect relations
• Optimal Port-based Teleportation
• Convex optimization of programmable quantum computers
• Optimization and learning of quantum programs
• Asymptotic performance of port-based teleportation
• Generalized teleportation and entanglement recycling
• Simplified formalism of the algebra of partially transposed permutation operators with applications
• Structure and properties of the algebra of partially transposed permutation operators
• Characterising port-based teleportation as a universal simulator of qubit channels
• Generalization of port-based teleportation and controlled teleportation capability
• Optimal Multi-port-based Teleportation Schemes
• Enumeration of Standard Young Tableaux

Cited by in corpus (10)

• Efficient multi port-based teleportation schemes
• Quantum information
• Optimality of the pretty good measurement for port-based teleportation
• Optimal Multi-port-based Teleportation Schemes
• On the Duality of Teleportation and Dense Coding
• Linear programming with unitary-equivariant constraints
• Teleportation of Post-Selected Quantum States
• Quantum Advantage in Storage and Retrieval of Isometry Channels
• Square-root measurements and degradation of the resource state in port-based teleportation scheme
• A resource theory of asynchronous quantum information processing