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Engineering entanglement for metrology with rotating matter waves

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posted on 2023-06-08, 20:59 authored by L M Rico-Gutierrez, T P Spiller, Jacob DunninghamJacob Dunningham
Entangled states of rotating, trapped ultracold bosons form a very promising scenario for quantum metrology. In order to employ such states for metrology, it is vital to understand their detailed form and the enhanced accuracy with which they could measure phase, in this case generated through rotation. In this work, we study the rotation of ultracold bosons in an asymmetric trapping potential beyond the lowest Landau level (LLL) approximation. We demonstrate that while the LLL can identify reasonably the critical frequency for a quantum phase transition and entangled state generation, it is vital to go beyond the LLL to identify the details of the state and quantify the quantum Fisher information (which bounds the accuracy of the phase measurement). We thus identify a new parameter regime for useful entangled state generation, amenable to experimental investigation.

History

Publication status

  • Published

File Version

  • Published version

Journal

New Journal of Physics

ISSN

1367-2630

Publisher

IOP Publishing

Issue

6

Volume

15

Page range

063010

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-06-04

First Open Access (FOA) Date

2015-06-04

First Compliant Deposit (FCD) Date

2015-06-04

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