Quantum teleportation protocol with assistant who prepares the amplitude modulated unknown qubits
Sergey A. Podoshvedov

TL;DR
This paper proposes a quantum teleportation protocol using a hybrid entangled state and an assistant who prepares amplitude-modulated unknown qubits, achieving high success probability for unbalanced states and exploring demodulation methods.
Contribution
It introduces a novel teleportation scheme involving an offline prepared amplitude-modulated qubit and analyzes its success probability and demodulation strategies.
Findings
High success probability for teleporting unbalanced qubits
Unambiguous measurement outcomes at Alice's side
Potential methods for amplitude demodulation
Abstract
We consider novel implementation of quantum teleportation protocol of unknown qubit with entangled hybrid state. Coherent components of the entangled hybrid state displace the teleported qubit at the same absolute but opposite in sign values, so that any information about amount by which the qubit is displaced is lost despite the fact that one of these events has definitely occurred. Alice unambiguously distinguishes her measurement outcomes and Bob obtains at his disposal states of a single photon in superposition of two modes with controllable amplitude distortions. We consider the implementation of this protocol with a third participant who off-line prepares amplitude modulated unknown qubits and hand them to Alice for teleportation. In this interpretation, the success probability of the teleportation depends on the absolute value of the amplitude of the unknown qubit. In particular,…
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