File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1103/PhysRevLett.127.060501
- Scopus: eid_2-s2.0-85112383727
- PMID: 34420310
- WOS: WOS:000680454100002
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Quantum Metrology for Non-Markovian Processes
Title | Quantum Metrology for Non-Markovian Processes |
---|---|
Authors | |
Issue Date | 2021 |
Citation | Physical Review Letters, 2021, v. 127, n. 6, article no. 060501 How to Cite? |
Abstract | Quantum metrology is a rapidly developing branch of quantum technologies. While various theories have been established on quantum metrology for Markovian processes, i.e., quantum channel estimation, quantum metrology for non-Markovian processes is much less explored. In this Letter, we establish a general framework of non-Markovian quantum metrology. For any parametrized non-Markovian process on a finite-dimensional system, we derive a formula for the maximal amount of quantum Fisher information that can be extracted from it by an optimally controlled probe state. In addition, we design an algorithm that evaluates this quantum Fisher information via semidefinite programming. We apply our framework to noisy frequency estimation, where we find that the optimal performance of quantum metrology is better in the non-Markovian scenario than in the Markovian scenario and explore the possibility of efficient sensing via simple variational circuits. |
Persistent Identifier | http://hdl.handle.net/10722/303815 |
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 3.040 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Altherr, Anian | - |
dc.contributor.author | Yang, Yuxiang | - |
dc.date.accessioned | 2021-09-15T08:26:04Z | - |
dc.date.available | 2021-09-15T08:26:04Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Physical Review Letters, 2021, v. 127, n. 6, article no. 060501 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10722/303815 | - |
dc.description.abstract | Quantum metrology is a rapidly developing branch of quantum technologies. While various theories have been established on quantum metrology for Markovian processes, i.e., quantum channel estimation, quantum metrology for non-Markovian processes is much less explored. In this Letter, we establish a general framework of non-Markovian quantum metrology. For any parametrized non-Markovian process on a finite-dimensional system, we derive a formula for the maximal amount of quantum Fisher information that can be extracted from it by an optimally controlled probe state. In addition, we design an algorithm that evaluates this quantum Fisher information via semidefinite programming. We apply our framework to noisy frequency estimation, where we find that the optimal performance of quantum metrology is better in the non-Markovian scenario than in the Markovian scenario and explore the possibility of efficient sensing via simple variational circuits. | - |
dc.language | eng | - |
dc.relation.ispartof | Physical Review Letters | - |
dc.title | Quantum Metrology for Non-Markovian Processes | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1103/PhysRevLett.127.060501 | - |
dc.identifier.pmid | 34420310 | - |
dc.identifier.scopus | eid_2-s2.0-85112383727 | - |
dc.identifier.volume | 127 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | article no. 060501 | - |
dc.identifier.epage | article no. 060501 | - |
dc.identifier.eissn | 1079-7114 | - |
dc.identifier.isi | WOS:000680454100002 | - |