Efficient Paths for Local Counterdiabatic Driving

Abstract

Local counterdiabatic driving (CD) provides a feasible approach for realizing approximate reversible/adiabatic processes like quantum state preparation using only local controls and without demanding excessively long protocol times. However, in many instances getting high accuracy of such CD protocols requires engineering very complicated new controls or pulse sequences. In this work, we describe a systematic method for altering the adiabatic path by adding extra local controls along which performance of local CD protocols is enhanced, both close to and far away from the adiabatic limit. We also identify an iterative procedure to improve the performance of local counterdiabatic driving further without any knowledge of the quantum wavefunction. We then show that these methods provides dramatic improvement in the preparation of non-trivial GHZ ground states of several different spin systems with both short-range and long-range interactions.

14 pages, 14 figures. v2 contains new sections on finite protocol time performance, discussion of ground state optimization and novel iterative procedure, and detailed realization of protocol with Floquet pulses

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Cited by in corpus (16)

• Counterdiabatic Driving for Periodically Driven Systems
• Taming quantum systems: A tutorial for using shortcuts-to-adiabaticity, quantum optimal control, and reinforcement learning
• Geometric Floquet theory
• Universal Counterdiabatic Driving
• Counterdiabatic Route to Entanglement Steering and Dynamical Freezing in the Floquet Lipkin-Meshkov-Glick Model
• A numerical approach for calculating exact non-adiabatic terms in quantum dynamics
• High-dimensional counterdiabatic quantum computing
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