Superdense coding of quantum states

Details Superdense coding of quantum states Superdense coding of quantum states

2003-07-30

arxiv.org/abs/quant-ph/0307221v2

Phys. Rev. Lett. 92, 187901 (2004)

Physics

Quantum Physics

5 pages, revtex4

Scientific paper

10.1103/PhysRevLett.92.187901

We describe a method to non-obliviously communicate a 2l-qubit quantum state by physically transmitting l+o(l) qubits of communication, and by consuming l ebits of entanglement and some shared random bits. In the non-oblivious scenario, the sender has a classical description of the state to be communicated. Our method can be used to communicate states that are pure or entangled with the sender's system; l+o(l) and 3l+o(l) shared random bits are sufficient respectively.

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