Optimal conclusive teleportation of quantum states

Abstract

Quantum teleportation of qudits is revisited. In particular, we analyze the case where the quantum channel corresponds to a non-maximally entangled state and show that the success of the protocol is directly related to the problem of distinguishing non-orthogonal quantum states. The teleportation channel can be seen as a coherent superposition of two channels, one of them being a maximally entangled state thus, leading to perfect teleportation and the other, corresponding to a non-maximally entangled state living in a subspace of the d-dimensional Hilbert space. The second channel leads to a teleported state with reduced fidelity. We calculate the average fidelity of the process and show its optimality.

8 pages, revtex, no figures

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• Atemporal diagrams for quantum circuits
• Experimental Multi-Party Sequential State Discrimination
• Requirement of Dissonance in Assisted Optimal State Discrimination
• Categorical Quantum Circuits
• Maximum-confidence discrimination among symmetric qudit states
• Of Local Operations and Physical Wires
• Experimental scheme for unambiguous discrimination of linearly independent symmetric states
• Quantum teleportation via maximum-confidence quantum measurements
• Optimal dense coding with arbitrary pure entangled states
• Experimental quantum state discrimination using the optimal fixed rate of inconclusive outcomes strategy
• Enhanced discrimination of high-dimensional quantum states by concatenated optimal measurement strategies
• Perfect many-to-one teleportation with stabilizer states
• Quantum teleportation is a reversal of quantum measurement
• A heralded two-qutrit entangled state
• Parametric separation of symmetric pure quantum states
• Probabilistic resumable quantum teleportation in high dimensions
• Deterministic joint remote state preparation with a non-maximally entangled channel
• Entanglement thresholds for displaying the quantum nature of teleportation
• Gain in Performance of Teleportation with Uniformity-breaking Distributions
• Perfect teleportation with a partially entangled quantum channel
• Telecloning of qudits via partially entangled states
• Coherence based on positive operator-valued measures for standard and concatenated quantum state discrimination with inconclusive results
• Training quantum measurement devices to discriminate unknown non-orthogonal quantum states
• Information back-flow in quantum non-Markovian dynamics and its connection to teleportation
• Classical and Quantum Resources in Perfect Teleportation
• Nontraditional Deterministic Remote State Preparation Using a Non-Maximally Entangled Channel without Additional Quantum Resources