Multiple Round Quantum Dense Coding And Its Implementation Using Nuclear Magnetic Resonance

Details Multiple Round Quantum Dense Coding And Its Implementation Using Nuclear Magnetic Resonance Multiple Round Quantum Dense Coding And Its Implementation Using Nuclear Magnetic Resonance

2004-07-14

arxiv.org/abs/quant-ph/0407104v1

Physics

Quantum Physics

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Scientific paper

A multiple round quantum dense coding (MRQDC) scheme based on the quantum phase estimation algorithm is proposed. Using an $m+1$ qubit system, Bob can transmit $2^{m+1}$ messages to Alice, through manipulating only one qubit and exchanging it between Alice and Bob for $m$ rounds. The information capacity is enhanced to $m+1$ bits. We have implemented the scheme in a three- qubit nuclear magnetic resonance (NMR) quantum computer. The experimental results show a good agreement between theory and experiment.

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