dc.identifier.uri |
http://dx.doi.org/10.15488/9960 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/10018 |
|
dc.contributor.author |
Schulte, Marius
|
|
dc.contributor.author |
Martínez-Lahuerta, Victor J.
|
|
dc.date.accessioned |
2020-08-03T15:49:16Z |
|
dc.date.available |
2020-08-03T15:49:16Z |
|
dc.date.issued |
2020 |
|
dc.identifier.citation |
Schulte, Marius; Martínez-Lahuerta, Victor J.: Ramsey interferometry with generalized one-axis twisting echoes. In: Quantum 4 (2020), 268. DOI: https://doi.org/10.22331/q-2020-05-15-268 |
|
dc.description.abstract |
We consider a large class of Ramsey interferometry protocols which are enhanced by squeezing and un-squeezing operations before and after a phase signal is imprinted on the collective spin of N particles. We report an analytical optimization for any given particle number and strengths of (un-)squeezing. These results can be applied even when experimentally relevant decoherence processes during the squeezing and un-squeezing interactions are included. Noise between the two interactions is however not considered in this work. This provides a generalized characterization of squeezing echo protocols, recovering a number of known quantum metrological protocols as local sensitivity maxima, thereby proving their optimality. We discover a single new protocol. Its sensitivity enhancement relies on a double inversion of squeezing. In the general class of echo protocols, the newly found over-un-twisting protocol is singled out due to its Heisenberg scaling even at strong collective dephasing. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Wien : Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften |
|
dc.relation.ispartofseries |
Quantum 4 (2020) |
|
dc.rights |
CC BY 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
|
dc.subject |
Ramsey interferometry |
eng |
dc.subject |
optimization |
eng |
dc.subject |
squeezing |
eng |
dc.subject |
un-squeezing |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
Ramsey interferometry with generalized one-axis twisting echoes |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.doi |
https://doi.org/10.22331/q-2020-05-15-268 |
|
dc.bibliographicCitation.volume |
4 |
|
dc.bibliographicCitation.firstPage |
268 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|