Observation of Non-Hermitian Topology with Nonunitary Dynamics of Solid-State Spins
Non-Hermitian topological phases exhibit a number of exotic features that have no Hermitian counterparts, including the skin effect and breakdown of the conventional bulk-boundary correspondence. Here, we implement the non-Hermitian Su-Schrieffer-Heeger Hamiltonian, which is a prototypical model for studying non-Hermitian topological phases, with a solid-state quantum simulator consisting of an electron spin and a ^{13}C nuclear spin in a nitrogen-vacancy center in a diamond. By employing a dilation method, we realize the desired nonunitary dynamics for the electron spin and map out its spin texture in the momentum space, from which the corresponding topological invariant can be obtained directly. From the measured spin textures with varying parameters, we observe both integer and fractional winding numbers. The non-Hermitian topological phase with fractional winding number cannot be continuously deformed to any Hermitian topological phase and is intrinsic to non-Hermitian systems. Our result paves the way for further exploiting and understanding the intriguing properties of non-Hermitian topological phases with solid-state spins or other quantum simulation platforms.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2021 |
|---|---|
| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:127 |
|---|---|
| Enthalten in: |
Physical review letters - 127(2021), 9 vom: 27. Aug., Seite 090501 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Zhang, Wengang [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Revised 14.09.2021 published: Print Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1103/PhysRevLett.127.090501 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM330484109 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM330484109 | ||
| 003 | DE-627 | ||
| 005 | 20231225211400.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2021 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1103/PhysRevLett.127.090501 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1101.xml |
| 035 | |a (DE-627)NLM330484109 | ||
| 035 | |a (NLM)34506190 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Zhang, Wengang |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Observation of Non-Hermitian Topology with Nonunitary Dynamics of Solid-State Spins |
| 264 | 1 | |c 2021 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 14.09.2021 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Non-Hermitian topological phases exhibit a number of exotic features that have no Hermitian counterparts, including the skin effect and breakdown of the conventional bulk-boundary correspondence. Here, we implement the non-Hermitian Su-Schrieffer-Heeger Hamiltonian, which is a prototypical model for studying non-Hermitian topological phases, with a solid-state quantum simulator consisting of an electron spin and a ^{13}C nuclear spin in a nitrogen-vacancy center in a diamond. By employing a dilation method, we realize the desired nonunitary dynamics for the electron spin and map out its spin texture in the momentum space, from which the corresponding topological invariant can be obtained directly. From the measured spin textures with varying parameters, we observe both integer and fractional winding numbers. The non-Hermitian topological phase with fractional winding number cannot be continuously deformed to any Hermitian topological phase and is intrinsic to non-Hermitian systems. Our result paves the way for further exploiting and understanding the intriguing properties of non-Hermitian topological phases with solid-state spins or other quantum simulation platforms | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Ouyang, Xiaolong |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Xianzhi |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xin |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Huili |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Yefei |e verfasserin |4 aut | |
| 700 | 1 | |a Chang, Xiuying |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Yanqing |e verfasserin |4 aut | |
| 700 | 1 | |a Deng, Dong-Ling |e verfasserin |4 aut | |
| 700 | 1 | |a Duan, L-M |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Physical review letters |d 1985 |g 127(2021), 9 vom: 27. Aug., Seite 090501 |w (DE-627)NLM099656183 |x 1079-7114 |7 nnns |
| 773 | 1 | 8 | |g volume:127 |g year:2021 |g number:9 |g day:27 |g month:08 |g pages:090501 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1103/PhysRevLett.127.090501 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 127 |j 2021 |e 9 |b 27 |c 08 |h 090501 | ||