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Enhancing sensitivity to rotations with quantum solitonic currents

by P. Naldesi, J. Polo, V. Dunjko, H. Perrin, M. Olshanii, L. Amico and A. Minguzzi

Submission summary

As Contributors: Anna Minguzzi · Piero Naldesi · Maxim Olshanii · Juan Polo
Preprint link: scipost_202010_00006v2
Date submitted: 2021-11-25 09:33
Submitted by: Naldesi, Piero
Submitted to: SciPost Physics
Academic field: Physics
  • Quantum Physics
Approach: Theoretical


We study a gas of attracting bosons confined in a ring shape potential pierced by an artificial magnetic field. Because of attractive interactions, quantum analogs of bright solitons are formed. As a genuine quantum-many-body feature, we demonstrate that angular momentum fractionalization occurs and that such effect manifests on time of flight measurements. As a consequence, the matter-wave current in our system can react to very small changes of rotation or other artificial gauge fields. We work out a protocol to entangle such quantum solitonic currents, allowing to operate rotation sensors and gyroscopes to Heisenberg-limited sensitivity. Therefore, we demonstrate that the specific coherence and entanglement properties of the system can induce an enhancement of sensitivity to an external rotation.

Current status:
Editor-in-charge assigned

Author comments upon resubmission

Dear Editors,

We are grateful to all the referees for their careful reading and assessment of our paper.
We have addressed all the comments/criticisms made by the Referees in this response and in the revised version of the manuscript.
We hope that the paper can now be considered for publication.

Yours sincerely,
Piero Naldesi on behalf of the authors.

Reports on this Submission

Anonymous Report 1 on 2021-12-10 (Invited Report)


The authors have revised the manuscript, and significantly improved the presentation, in particular the discussion on the quench scheme. While it is still a bit disappointing that the large system limit is not discussed in detail, I do think that this paper should be published in SciPost in its current form.

  • validity: good
  • significance: high
  • originality: good
  • clarity: good
  • formatting: good
  • grammar: good

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Anonymous on 2022-01-07  [id 2075]

I still feel that the paper is borderline for SciPost: not all the criticism of my previous report have been overcome, especially I think the scientific discussion is still too brief and should be expanded more to be sufficiently clear to the reader. My other (but less important) unaddressed comment is to give a more complete overview about alternative methods to create NOON states with Bose-Einstein condensate, which is a long-standing topic in the literature to which this paper contributes. I suggest the authors to include at least a reference to reviews in this topic, RMP 90, 025004 (2018), RMP 90, 035005 (2018) and Journal of Physics A 47, 424006 (2014), the last two also being relevant for quantum metrology in general.

I do not want to see this manuscript again and I leave the revision to the authors. At this point, I may follow the other Referees and accept this manuscript for publication.