Probabilistic coding of quantum states

Details Probabilistic coding of quantum states Probabilistic coding of quantum states

2006-03-27

arxiv.org/abs/quant-ph/0603244v1

Phys. Rev. A 74, 012302 (2006)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.74.012302

We discuss properties of probabilistic coding of two qubits to one qutrit and generalize the scheme to higher dimensions. We show that the protocol preservers entanglement between qubits to be encoded and environment and can be also applied to mixed states. We present the protocol which enables encoding of n qudits to one qudit of dimension smaller than the Hilbert space of the original system and then probabilistically but error-free decode any subset of k qudits. We give a formula for the probability of successful decoding.

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