Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols
Journal
Physical Review Letters
Journal Volume
136
Journal Issue
23
Start Page
230802
ISSN
0031-9007
1079-7114
Date Issued
2026-06-09
Author(s)
Abstract
Fast coherent state transport is essential to quantum computation and quantum information processing. While an adiabatic transport of atomic qubits guarantees a high fidelity of the state preparation, it requires a long timescale that defies efficient quantum operations. Here, we propose an adaptable and fast bang-bang-bang protocol, utilizing a combination of forward- and backward-moving trap potentials, to expedite the coherent state transport. We further showcase the advantage of applying squeezed coherent state evolution under a deeper potential followed by a weaker one, where a design of symmetric squeezing potential transports promotes an even shorter timescale for genuine state preparation. Our protocols outperform conventional forward-moving-only methods, providing new insights and opportunities for rapid state transport and preparation, ultimately advancing the capabilities of quantum control and quantum operations.
Publisher
American Physical Society (APS)
Type
journal article