Adiabatic preparation of entangled, magnetically ordered states with cold bosons in optical lattices
Name
Venegas-Gomez_2020_Quantum_Sci._Technol._5_045013.pdf
Description
Published version
Size
2.29 MB
Format
Unknown
Checksum (MD5)
e2459e96507ffbd1cbd90175e8657823
Author(s)
Venegas-Gomez, Araceli
Schachenmayer, Johannes
Buyshikh, Anton S.
Ketterle, Wolfgang
Chiofalo, Maria Luisa
Daley, Andrew J.
Date Issued
2020
Journal
Quantum Science and Technology
Publisher
IOP Publishing
Version
Final published version
Abstract
© 2020 The Author(s). Published by IOP Publishing Ltd We analyze a scheme for preparation of magnetically ordered states of two-component bosonic atoms in optical lattices. We compute the dynamics during adiabatic and optimized time-dependent ramps to produce ground states of effective spin Hamiltonians, and determine the robustness to decoherence for realistic experimental system sizes and timescales. Ramping parameters near a phase transition point in both effective spin-1/2 and spin-1 models produces entangled spin-symmetric states that have potential future applications in quantum enhanced measurement. The preparation of these states and their robustness to decoherence is quantified by computing the quantum Fisher information (QFI) of final states. We identify that the generation of useful entanglement should in general be more robust to heating than it would be implied by the state fidelity, with corresponding implications for practical applications.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/2058-9565/abb004
