Phys. Rev. Lett. 92, 187901 (2004) [4 pages]Superdense Coding of Quantum StatesReceived 30 August 2003; published 4 May 2004 We describe a method for nonobliviously communicating a 2l-qubit quantum state by physically transmitting l+o(l) qubits, and by consuming l ebits of entanglement plus some shared random bits. In the nonoblivious 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.187901
DOI:
10.1103/PhysRevLett.92.187901
PACS:
03.67.Hk, 03.65.Ta
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