Quadratic spin-phonon coupling and bipolarons in trapped ions
Year: 2025
Type: article
Abstract: We consider the quantum simulation of quadratic spin-phonon coupling in a crystal of trapped ions. The coupling is implemented using tightly focused optical tweezers on each ion that change the local trapping potential in a state-dependent way. By encoding spins in the internal states of the ions and adding a tunneling term via Mølmer-Sørensen-type interactions, we calculate the emergence of mobile bipolarons driven by the zero-point energy of the ion crystal phonons. We show that thermal occupation may pin the bipolarons for ion crystals at finite temperature. Our scheme can be used to study and illustrate the emergence of mobile bipolarons as a function of temperature.
Source: Physical Review A
DOI: 10.1103/mcl9-27tj
Institutions: University of Amsterdam, ETH Zurich, QuSoft
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: Quantum-engineered precision measurements of simple atoms and molecules - what fundamental physics is hiding in the next decimal place?, Quantum Software Consortium, G420050720, A Trapped-Ion Quantum Gate Based on an Optical Magnus Effect, Trapped-ions, electric fields, and optical tweezers: Ingredients for a novel quantum computer, Atomic quantum simulators 2.0 - taming the long-range interactions, Trapped ions in optical microtraps, Programmable trapped ion quantum simulator
OpenAlex ID: W4411977047