Physics – Quantum Physics
Scientific paper
2003-03-03
Physics
Quantum Physics
To appear in Phys. Rev. A. 18 pages, 2 figure, minor erros corrected and more explanations added to increase the readability
Scientific paper
10.1103/PhysRevA.69.022320
We propose a linear optics scheme with SPDC process to test the fault tolerance property of quantum error correction code. To transmit an unknown qubit robustly through the noisy channel, one may first encode it into a certain quantum error correction code and then transmit it. The remote party decodes it and stores it. Sending a qubit in such a way can significantly reduces the error rate compared with directly sending the qubit itself. Here we show how to realize such a scheme by linear optics.
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