Dynamical invariants for quantum control of four-level systems
arXiv:1205.3034 · doi:10.1103/PhysRevA.86.062312
Abstract
We present a Lie-algebraic classification and detailed construction of the dynamical invariants, also known as Lewis-Riesenfeld invariants, of the four-level systems including two-qubit systems which are most relevant and sufficiently general for quantum control and computation. These invariants not only solve the time-dependent Schrödinger equation of four-level systems exactly but also enable the control, and hence quantum computation based on which, of four-level systems fast and beyond adiabatic regimes.
11 pages, 5 tables
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