Quantum transport protected by acceleration from nonadiabaticity and dissipation

Area of Science:

• Quantum physics
• Quantum control
• Quantum information science

Background:

• Quantum wavepackets are susceptible to dissipation and leakage in potential traps.
• Optimizing transport fidelity in open quantum systems remains a significant challenge.

Purpose of the Study:

• To introduce a novel control strategy for high-fidelity, fast quantum wavepacket transport.
• To address challenges posed by bath-induced dissipation and non-adiabatic transitions.
• To optimize continuous-variable system dynamics in non-Markovian environments.

Main Methods:

• Developing a control strategy based on steering wavepacket acceleration.
• Applying the strategy to optimize non-Markovian bath-dressed continuous-variable systems.
• Demonstrating the approach for impurity transport in Bose-Einstein condensates.

Main Results:

• Achieved high-fidelity fast transport of unstable quantum wavepackets despite dissipation.
• The strategy optimally handles wavepacket leakage and bath-induced dissipation.
• Outperformed counterdiabatic field methods, especially for fast non-adiabatic transport.
• Maximized transport fidelity even for supersonic transfer through phonon baths.

Conclusions:

• The proposed control strategy offers a general and optimal approach for quantum transport.
• It is applicable to a wide range of systems, including trapped atoms, ions, and molecular products.
• Enables efficient quantum state transfer in both dissipative and non-dissipative scenarios.