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Linear Optical Realization of Qubit Purification with Quantum Amplitude Damping Channel |
| LIN Qing;LI Jian;GUO Guang-Can |
| Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 |
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| Cite this article: |
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LIN Qing, LI Jian, GUO Guang-Can 2007 Chin. Phys. Lett. 24 1809-1312 |
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Abstract We provide an experimental scheme which includes the realization of quantum amplitude damping channel and the optimal two-qubit purification. Moreover, we discuss the purification of arbitrary input qubits and arbitrary N qubits. Our scheme only uses linear optical elements and the proposal may be useful in transmission of photons in fibres. This scheme is feasible in the laboratory with the current experimental technology.
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| Keywords:
03.67.Pp
03.65.Ta
42.50.Dv
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Received: 09 March 2007
Published: 25 June 2007
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| PACS: |
03.67.Pp
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(Quantum error correction and other methods for protection against decoherence)
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03.65.Ta
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(Foundations of quantum mechanics; measurement theory)
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42.50.Dv
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(Quantum state engineering and measurements)
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