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quant-ph1998
Projective plane and planar quantum codes
Michael H. Freedman, David A. Meyer
Cellulations of the projective plane RP^2 define single qubit topological quantum error correcting codes since there is a unique essential cycle in H_1(RP^2;Z_2). We construct thre…
quant-ph1998
Scale decoherence in inhomogeneous potentials
David A. Meyer
Finite precision measurement factors the Hilbert space of a quantum system into a tensor product . This is mathematically equivalent to the partition i…
quant-ph1998
Decoherence in the Dirac equation
David A. Meyer
A Dirac particle is represented by a unitarily evolving state vector in a Hilbert space which factors as . Motivated by the similarity to simple mode…