Population transfer in a nitrogen-vacancy spin qutrit via shortcuts to adiabaticity with simplified drivings
R.-Y. Yan, Z.-B. Feng
School of Science, Xuchang University, 461000 Xuchang, China
Optimal control of quantum system is significant for information science and
technology. Here an efficient scheme is proposed for implementing fast
population transfer in a spin qutrit of nitrogen-vacancy center via
shortcuts to adiabaticity (STA) with simplified drivings. At two-photon
resonance, a Λ-configuration interaction between the spin qutrit and
driving fields can be obtained effectively. By the invariant-based STA, the
reversible population transfer can be realized using the Rabi pulses with
sine and cosine waveforms. Compared with the superadiabatic transitionless
driving, the present pulses in our strategy become simplified technically,
contributing to reduce the error effect of control parameter deviations.
Moreover, the high-fidelity quantum operations can be performed with the
accessible decoherence rates. The protocol could offer an optimized
avenue towards the STA-based quantum control of spin qutrit experimentally.