Quantum logic with weakly coupled qubits

Details Quantum logic with weakly coupled qubits Quantum logic with weakly coupled qubits

2009-06-29

arxiv.org/abs/0906.5209v1

Physics

Quantum Physics

4 pages, Revtex

Scientific paper

There are well-known protocols for performing CNOT quantum logic with qubits coupled by particular high-symmetry (Ising or Heisenberg) interactions. However, many architectures being considered for quantum computation involve qubits or qubits and resonators coupled by more complicated and less symmetric interactions. Here we consider a widely applicable model of weakly but otherwise arbitrarily coupled two-level systems, and use quantum gate design techniques to derive a simple and intuitive CNOT construction. Useful variations and extensions of the solution are given for common special cases.

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