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Universal nonadiabatic geometric gates in two-qubit decoherence-free subspaces.


ABSTRACT: Geometric quantum computation in decoherence-free subspaces is of great practical importance because it can protect quantum information from both control errors and collective dephasing. However, previous proposed schemes have either states leakage or four-body interactions problems. Here, we propose a feasible scheme without these two problems. Our scheme is realized in two-qubit decoherence-free subspaces. Since the Hamiltonian we use is generic, our scheme looks promising to be demonstrated experimentally in different systems, including superconducting charge qubits.

SUBMITTER: Xu G 

PROVIDER: S-EPMC4212229 | biostudies-other | 2014

REPOSITORIES: biostudies-other

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