Theory of initialization-free decoherence-free subspaces and subsystems

by: Alireza Shabani, Daniel A Lidar

Physical Review A (Atomic, Molecular, and Optical Physics), Vol. 72, No. 4. (2005)

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Abstract

We introduce a generalized theory of decoherence-free subspaces and subsystems (DFSs), which do not require accurate initialization. We derive a set of conditions for the existence of DFSs within this generalized framework. By relaxing the initialization requirement we show that a DFS can tolerate arbitrarily large preparation errors. This has potentially significant implications for experiments involving DFSs, in particular for the experimental implementation, over DFSs, of the large class of quantum algorithms which can function with arbitrary input states.

@article{citeulike:2914272, abstract = {We introduce a generalized theory of decoherence-free subspaces and subsystems (DFSs), which do not require accurate initialization. We derive a set of conditions for the existence of DFSs within this generalized framework. By relaxing the initialization requirement we show that a DFS can tolerate arbitrarily large preparation errors. This has potentially significant implications for experiments involving DFSs, in particular for the experimental implementation, over DFSs, of the large class of quantum algorithms which can function with arbitrary input states.}, author = {Shabani, Alireza and Lidar, Daniel A. }, citeulike-article-id = {2914272}, doi = {10.1103/PhysRevA.72.042303}, journal = {Physical Review A (Atomic, Molecular, and Optical Physics)}, keywords = {physics, quantum, quantum-information}, number = {4}, posted-at = {2008-06-21 19:48:52}, priority = {2}, publisher = {APS}, title = {Theory of initialization-free decoherence-free subspaces and subsystems}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PLRAAN000072000004042303000001\&idtype=cvips\&gifs=yes}, volume = {72}, year = {2005} }

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TY - JOUR ID - citeulike:2914272 L3 - citeulike-article-id:2914272 TI - Theory of initialization-free decoherence-free subspaces and subsystems JF - Physical Review A (Atomic, Molecular, and Optical Physics) VL - 72 IS - 4 PB - APS N2 - We introduce a generalized theory of decoherence-free subspaces and subsystems (DFSs), which do not require accurate initialization. We derive a set of conditions for the existence of DFSs within this generalized framework. By relaxing the initialization requirement we show that a DFS can tolerate arbitrarily large preparation errors. This has potentially significant implications for experiments involving DFSs, in particular for the experimental implementation, over DFSs, of the large class of quantum algorithms which can function with arbitrary input states. KW - physics KW - quantum KW - quantum-information AU - Shabani, Alireza AU - Lidar, Daniel PY - 2005/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000072000004042303000001&idtype=cvips&gifs=yes ER -

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