Revisiting the impact of dissipation on time-reversed one-axis-twist quantum-sensing protocols
Spin squeezing can increase the sensitivity of interferometric measurements of small signals in large spin ensembles beyond the standard quantum limit. In many practical settings, the ideal metrological gain is limited by imperfect readout of the sensor. To overcome this issue, protocols based on ti...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-12-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.043279 |
| _version_ | 1797210324254851072 |
|---|---|
| author | Martin Koppenhöfer A. A. Clerk |
| author_facet | Martin Koppenhöfer A. A. Clerk |
| author_sort | Martin Koppenhöfer |
| collection | DOAJ |
| description | Spin squeezing can increase the sensitivity of interferometric measurements of small signals in large spin ensembles beyond the standard quantum limit. In many practical settings, the ideal metrological gain is limited by imperfect readout of the sensor. To overcome this issue, protocols based on time reversal of unitary one-axis-twist (OAT) spin-squeezing dynamics have been proposed. Such protocols mitigate readout noise and, when implemented using cavity feedback, have been argued to also be robust against dissipation as long as the collective cooperativity of the system is sufficiently large [Davis et al., Phys. Rev. Lett. 116, 053601 (2016)0031-900710.1103/PhysRevLett.116.053601]. Here, we perform a careful systematic study of dissipative effects on three different implementations of a OAT twist-untwist sensing scheme (based on symmetric as well as asymmetric cavity feedback and on a Tavis-Cummings interaction). Our full treatment shows that the three approaches have markedly different properties and resilience when subject to dissipation. Moreover, the metrological gain for an implementation using symmetric cavity feedback is more sensitive to undesired dissipation than was previously appreciated. |
| first_indexed | 2024-04-24T10:08:47Z |
| format | Article |
| id | doaj.art-9c41cf1b2b304908b9675b4ca43e2894 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:08:47Z |
| publishDate | 2023-12-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-9c41cf1b2b304908b9675b4ca43e28942024-04-12T17:37:18ZengAmerican Physical SocietyPhysical Review Research2643-15642023-12-015404327910.1103/PhysRevResearch.5.043279Revisiting the impact of dissipation on time-reversed one-axis-twist quantum-sensing protocolsMartin KoppenhöferA. A. ClerkSpin squeezing can increase the sensitivity of interferometric measurements of small signals in large spin ensembles beyond the standard quantum limit. In many practical settings, the ideal metrological gain is limited by imperfect readout of the sensor. To overcome this issue, protocols based on time reversal of unitary one-axis-twist (OAT) spin-squeezing dynamics have been proposed. Such protocols mitigate readout noise and, when implemented using cavity feedback, have been argued to also be robust against dissipation as long as the collective cooperativity of the system is sufficiently large [Davis et al., Phys. Rev. Lett. 116, 053601 (2016)0031-900710.1103/PhysRevLett.116.053601]. Here, we perform a careful systematic study of dissipative effects on three different implementations of a OAT twist-untwist sensing scheme (based on symmetric as well as asymmetric cavity feedback and on a Tavis-Cummings interaction). Our full treatment shows that the three approaches have markedly different properties and resilience when subject to dissipation. Moreover, the metrological gain for an implementation using symmetric cavity feedback is more sensitive to undesired dissipation than was previously appreciated.http://doi.org/10.1103/PhysRevResearch.5.043279 |
| spellingShingle | Martin Koppenhöfer A. A. Clerk Revisiting the impact of dissipation on time-reversed one-axis-twist quantum-sensing protocols Physical Review Research |
| title | Revisiting the impact of dissipation on time-reversed one-axis-twist quantum-sensing protocols |
| title_full | Revisiting the impact of dissipation on time-reversed one-axis-twist quantum-sensing protocols |
| title_fullStr | Revisiting the impact of dissipation on time-reversed one-axis-twist quantum-sensing protocols |
| title_full_unstemmed | Revisiting the impact of dissipation on time-reversed one-axis-twist quantum-sensing protocols |
| title_short | Revisiting the impact of dissipation on time-reversed one-axis-twist quantum-sensing protocols |
| title_sort | revisiting the impact of dissipation on time reversed one axis twist quantum sensing protocols |
| url | http://doi.org/10.1103/PhysRevResearch.5.043279 |
| work_keys_str_mv | AT martinkoppenhofer revisitingtheimpactofdissipationontimereversedoneaxistwistquantumsensingprotocols AT aaclerk revisitingtheimpactofdissipationontimereversedoneaxistwistquantumsensingprotocols |