Deterministic many-resonator W entanglement of nearly arbitrary microwave states via attractive Bose-Hubbard simulation

Gangat, A. A., McCulloch, I. P. and Milburn, G. J. (2013) Deterministic many-resonator W entanglement of nearly arbitrary microwave states via attractive Bose-Hubbard simulation. Physical Review X, 3 3: 031009.1-031009.11. doi:10.1103/PhysRevX.3.031009

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ308316_OA.pdf Full text (open access) application/pdf 633.38KB 2

Author Gangat, A. A.
McCulloch, I. P.
Milburn, G. J.
Title Deterministic many-resonator W entanglement of nearly arbitrary microwave states via attractive Bose-Hubbard simulation
Formatted title
Deterministic many-resonator W entanglement of nearly arbitrary microwave states via attractive Bose-Hubbard simulation
Journal name Physical Review X   Check publisher's open access policy
ISSN 2160-3308
Publication date 2013-08-21
Sub-type Article (original research)
DOI 10.1103/PhysRevX.3.031009
Open Access Status DOI
Volume 3
Issue 3
Start page 031009.1
End page 031009.11
Total pages 11
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2014
Language eng
Formatted abstract
Multipartite entanglement of large numbers of physically distinct linear resonators is of both fundamental and applied interest, but there have been no feasible proposals to date for achieving it. At the same time, the Bose-Hubbard model with attractive interactions (ABH) is theoretically known to have a phase transition from the superfluid phase to a highly entangled nonlocal superposition, but observation of this phase transition has remained out of experimental reach. In this theoretical work, we jointly address these two problems by (1) proposing an experimentally accessible quantum simulation of the ABH phase transition in an array of tunably coupled superconducting circuit microwave resonators and (2) incorporating the simulation into a highly scalable protocol that takes as input any microwave-resonator state with negligible occupation of number states |0⟩ and |1⟩ and nonlocally superposes it across the whole array of resonators. The large-scale multipartite entanglement produced by the protocol is of the W type, which is well known for its robustness. The protocol utilizes the ABH phase transition to generate the multipartite entanglement of all of the resonators in parallel, and is therefore deterministic and permits an increase in resonator number without any increase in protocol complexity; the number of resonators is limited instead by system characteristics such as resonator-frequency disorder and inter-resonator coupling strength. Only one local and two global controls are required for the protocol. We numerically demonstrate the protocol with realistic system parameters and estimate that current experimental capabilities can realize the protocol with high fidelity for greater than 40 resonators. Because superconducting-circuit microwave resonators are capable of interfacing with other devices and platforms such as mechanical resonators and (potentially) optical fields, this proposal provides a route toward large-scale W-type entanglement in those systems as well.
Keyword Condensed matter physics
Quantum physics
Quantum information
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 3 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 03 Sep 2013, 14:56:14 EST by Adil Gangat on behalf of Engineered Quantum Systems