Physics – Quantum Physics
Scientific paper
2009-09-20
Journal of Physics A: Math. Theor. Volume 43 (5), 055301 (2010).
Physics
Quantum Physics
8 pages, comments are welcome
Scientific paper
We present a dense coding scheme between one sender and two receivers, which guarantees that the receivers simultaneously obtain their respective messages. In our scheme, the quantum entanglement channel is first locked by the sender so that the receivers cannot learn their messages unless they collaborate to perform the unlocking operation. We also show that the quantum Fourier transform can act as the locking operator both in simultaneous dense coding and teleportation.
Qiu Daowen
Situ Haozhen
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