guest ::
| Home > Publications database > Coherent back action of quantum dot detectors: Qubit spin precession > print |
| Home > Publications database > Coherent back action of quantum dot detectors: Qubit spin precession > print |
| 001 | 171952 | ||
| 005 | 20230426083113.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevB.89.195405 |2 doi |
| 024 | 7 | _ | |a 2128/8049 |2 Handle |
| 024 | 7 | _ | |a WOS:000335560500004 |2 WOS |
| 024 | 7 | _ | |a altmetric:1816063 |2 altmetric |
| 037 | _ | _ | |a FZJ-2014-05506 |
| 082 | _ | _ | |a 530 |
| 100 | 1 | _ | |a Hell, Michael |0 P:(DE-Juel1)141753 |b 0 |e Corresponding Author |u fzj |
| 245 | _ | _ | |a Coherent back action of quantum dot detectors: Qubit spin precession |
| 260 | _ | _ | |a College Park, Md. |c 2014 |b APS |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 171952 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
| 336 | 7 | _ | |a JOURNAL_ARTICLE |2 ORCID |
| 336 | 7 | _ | |a article |2 DRIVER |
| 520 | _ | _ | |a A sensitive technique for the readout of the state of a qubit is based on the measurement of the conductance through a proximal sensor quantum dot (SQD). Here, we theoretically study the coherent backaction of such a measurement on a coupled SQD-charge-qubit system. We derive Markovian kinetic equations for the ensemble-averaged state of the SQD-qubit system, expressed in the coupled dynamics of two charge-state occupations of the SQD and two qubit isospin vectors, one for each SQD charge state. We find that aside from introducing dissipation, the detection also renormalizes the coherent evolution of the SQD-qubit system. Basically, if the electron on the detector has time to probe the qubit, then it also has time to fluctuate and thereby renormalize the system parameters. In particular, this induces torques on the qubit isospins, similar to the spin torque generated by the spintronic exchange field in noncollinear spin-valve structures. Second, we show that for a consistent description of the detection, one must also include the renormalization effects in the next-to-leading order in the electron tunneling rates, especially at the point of maximal sensitivity of the detector. Although we focus on a charge-qubit model, our findings are generic for qubit readout schemes that are based on spin-to-charge conversion using a quantum dot detector. Furthermore, our study of the stationary current through the SQD, a test measurement verifying that the qubit couples to the detector current, already reveals various significant effects of the isospin torques on the qubit. Our kinetic equations provide a starting point for further studies of the time evolution in charge-based qubit readout. Finally, we provide a rigorous sum rule that constrains such approximate descriptions of the qubit isospin dynamics and show that it is obeyed by our kinetic equations. |
| 536 | _ | _ | |a 422 - Spin-based and quantum information (POF2-422) |0 G:(DE-HGF)POF2-422 |c POF2-422 |f POF II |x 0 |
| 542 | _ | _ | |i 2014-05-07 |2 Crossref |u http://link.aps.org/licenses/aps-default-license |
| 700 | 1 | _ | |a Wegewijs, Maarten Rolf |0 P:(DE-Juel1)131026 |b 1 |u fzj |
| 700 | 1 | _ | |a DiVincenzo, David |0 P:(DE-Juel1)143759 |b 2 |u fzj |
| 773 | 1 | 8 | |a 10.1103/physrevb.89.195405 |b American Physical Society (APS) |d 2014-05-07 |n 19 |p 195405 |3 journal-article |2 Crossref |t Physical Review B |v 89 |y 2014 |x 1098-0121 |
| 773 | _ | _ | |a 10.1103/PhysRevB.89.195405 |0 PERI:(DE-600)2844160-6 |n 19 |p 195405 |t Physical review / B |v 89 |y 2014 |x 1098-0121 |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/171952/files/FZJ-2014-05506.pdf |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/171952/files/FZJ-2014-05506.jpg?subformat=icon-144 |x icon-144 |y OpenAccess |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/171952/files/FZJ-2014-05506.jpg?subformat=icon-180 |x icon-180 |y OpenAccess |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/171952/files/FZJ-2014-05506.jpg?subformat=icon-640 |x icon-640 |y OpenAccess |
| 909 | C | O | |o oai:juser.fz-juelich.de:171952 |p openaire |p open_access |p driver |p VDB |p dnbdelivery |
| 910 | 1 | _ | |a Forschungszentrum Jülich GmbH |0 I:(DE-588b)5008462-8 |k FZJ |b 0 |6 P:(DE-Juel1)141753 |
| 910 | 1 | _ | |a Forschungszentrum Jülich GmbH |0 I:(DE-588b)5008462-8 |k FZJ |b 1 |6 P:(DE-Juel1)131026 |
| 910 | 1 | _ | |a Forschungszentrum Jülich GmbH |0 I:(DE-588b)5008462-8 |k FZJ |b 2 |6 P:(DE-Juel1)143759 |
| 913 | 2 | _ | |a DE-HGF |b POF III |l Forschungsbereich Energie |1 G:(DE-HGF)POF3-140 |0 G:(DE-HGF)POF3-142 |2 G:(DE-HGF)POF3-100 |v Future Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT) |x 0 |
| 913 | 1 | _ | |a DE-HGF |b Schlüsseltechnologien |1 G:(DE-HGF)POF2-420 |0 G:(DE-HGF)POF2-422 |2 G:(DE-HGF)POF2-400 |v Spin-based and quantum information |x 0 |4 G:(DE-HGF)POF |3 G:(DE-HGF)POF2 |l Grundlagen zukünftiger Informationstechnologien |
| 914 | 1 | _ | |y 2014 |
| 915 | _ | _ | |a American Physical Society Transfer of Copyright Agreement |0 LIC:(DE-HGF)APS-112012 |2 HGFVOC |
| 915 | _ | _ | |a JCR |0 StatID:(DE-HGF)0100 |2 StatID |
| 915 | _ | _ | |a WoS |0 StatID:(DE-HGF)0110 |2 StatID |b Science Citation Index |
| 915 | _ | _ | |a WoS |0 StatID:(DE-HGF)0111 |2 StatID |b Science Citation Index Expanded |
| 915 | _ | _ | |a DBCoverage |0 StatID:(DE-HGF)0150 |2 StatID |b Web of Science Core Collection |
| 915 | _ | _ | |a DBCoverage |0 StatID:(DE-HGF)0199 |2 StatID |b Thomson Reuters Master Journal List |
| 915 | _ | _ | |a DBCoverage |0 StatID:(DE-HGF)0200 |2 StatID |b SCOPUS |
| 915 | _ | _ | |a DBCoverage |0 StatID:(DE-HGF)0300 |2 StatID |b Medline |
| 915 | _ | _ | |a Nationallizenz |0 StatID:(DE-HGF)0420 |2 StatID |
| 915 | _ | _ | |a OpenAccess |0 StatID:(DE-HGF)0510 |2 StatID |
| 915 | _ | _ | |a DBCoverage |0 StatID:(DE-HGF)1150 |2 StatID |b Current Contents - Physical, Chemical and Earth Sciences |
| 915 | _ | _ | |a IF < 5 |0 StatID:(DE-HGF)9900 |2 StatID |
| 920 | _ | _ | |l yes |
| 920 | 1 | _ | |0 I:(DE-Juel1)PGI-2-20110106 |k PGI-2 |l Theoretische Nanoelektronik |x 0 |
| 920 | 1 | _ | |0 I:(DE-82)080009_20140620 |k JARA-FIT |l JARA-FIT |x 1 |
| 980 | 1 | _ | |a FullTexts |
| 980 | _ | _ | |a journal |
| 980 | _ | _ | |a VDB |
| 980 | _ | _ | |a UNRESTRICTED |
| 980 | _ | _ | |a FullTexts |
| 980 | _ | _ | |a I:(DE-Juel1)PGI-2-20110106 |
| 980 | _ | _ | |a I:(DE-82)080009_20140620 |
| 999 | C | 5 | |a 10.1103/PhysRevLett.89.147902 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1126/science.1116955 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevLett.103.160503 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1063/1.2794995 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.81.161308 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1126/science.280.5367.1238 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1038/nature01642 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1063/1.1691491 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevLett.109.180601 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1038/36057 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.75.045309 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevLett.89.277901 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.77.155420 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.68.035309 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.75.045340 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevA.83.012304 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.70.195345 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevLett.90.166602 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.82.125451 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.85.205408 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.77.134513 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.87.014509 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1016/0370-2693(82)90169-1 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1016/S0370-2693(99)00659-0 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.72.073303 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.77.075325 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.57.15400 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/RevModPhys.73.357 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.78.235424 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.82.235307 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |1 H.-P. Breuer |y 2002 |2 Crossref |t The Theory of Open Quantum Systems |o H.-P. Breuer The Theory of Open Quantum Systems 2002 |
| 999 | C | 5 | |a 10.1080/00018730802218067 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevA.85.032110 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1038/nature02693 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.68.121402 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.50.18436 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1140/epjst/e2009-00962-3 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.72.205319 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevLett.107.087202 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevLett.91.127203 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1038/nphys931 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevLett.107.176808 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevA.61.022301 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1103/PhysRevB.77.195416 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1007/BF01608389 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |1 E. B. Davies |y 1975 |2 Crossref |o E. B. Davies 1975 |
| 999 | C | 5 | |a 10.1016/0378-4371(89)90490-1 |9 -- missing cx lookup -- |2 Crossref |
| 999 | C | 5 | |a 10.1088/1751-8113/43/40/405304 |9 -- missing cx lookup -- |2 Crossref |
| Library | Collection | CLSMajor | CLSMinor | Language | Author |
|---|