Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/4862
Title: | Recursive encoding and decoding of the noiseless subsystem and decoherence-free subspace | Authors: | Li, CK Nakahara, M Poon, YT Sze, NS Tomita, H |
Issue Date: | Oct-2011 | Source: | Physical review. A, Atomic, molecular, and optical physics, Oct. 2011, v. 84, no. 4, 044301, p. 1-4 | Abstract: | When an environmental disturbance to a quantum system has a wavelength much larger than the system size, all qubits in the system are under the action of the same error operator. The noiseless subsystem and decoherence-free subspace are immune to such collective noise. We construct simple quantum circuits that implement these error-avoiding codes for a small number n of physical qubits. A single logical qubit is encoded with n=3 and 4, while two and three logical qubits are encoded with n=5 and 7, respectively. Recursive relations among subspaces employed in these codes play essential roles in our implementation. | Keywords: | Logic gates Quantum electronics Quantum optics |
Publisher: | American Physical Society | Journal: | Physical review. A, Atomic, molecular, and optical physics | ISSN: | 1050-2947 | EISSN: | 1094-1622 | DOI: | 10.1103/PhysRevA.84.044301 | Rights: | Physical Review A © 2011 The American Physical Society. The Journal's web site is located at http://pra.aps.org/ |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Li_Recursive_Noiseless_Decoherence-free.pdf | 378.44 kB | Adobe PDF | View/Open |
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