Non-Hermitian physics of levitated nanoparticle array
The ability to control levitated nanoparticles allows one to explore various fields of physics, including quantum optics, quantum metrology, and nonequilibrium physics. It has been recently demonstrated that the arrangement of two levitated nanoparticles naturally realizes the tunable nonreciprocal...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-09-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.033217 |
| _version_ | 1797210409699115008 |
|---|---|
| author | Kazuki Yokomizo Yuto Ashida |
| author_facet | Kazuki Yokomizo Yuto Ashida |
| author_sort | Kazuki Yokomizo |
| collection | DOAJ |
| description | The ability to control levitated nanoparticles allows one to explore various fields of physics, including quantum optics, quantum metrology, and nonequilibrium physics. It has been recently demonstrated that the arrangement of two levitated nanoparticles naturally realizes the tunable nonreciprocal dipole-dipole interaction. Motivated by this development, we here propose and analyze an array of levitated nanoparticles as an ideal platform to study non-Hermitian physics in a highly controlled manner. We employ the non-Bloch band theory to determine the continuum bands of the proposed setup and investigate the non-Hermitian skin effect therein. In particular, we point out that the levitated nanoparticle array exhibits rich dynamical phases, including the dynamically unstable phase and the unconventional critical phase where the spectral singularity persists over a broad region of the controllable parameters. We also show that the long-range nature of the dipole-dipole interaction gives rise to the unique self-crossing point of the continuum band. |
| first_indexed | 2024-04-24T10:10:08Z |
| format | Article |
| id | doaj.art-e23693faa9a3416eb35b7912a9fe98fb |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:10:08Z |
| publishDate | 2023-09-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-e23693faa9a3416eb35b7912a9fe98fb2024-04-12T17:34:27ZengAmerican Physical SocietyPhysical Review Research2643-15642023-09-015303321710.1103/PhysRevResearch.5.033217Non-Hermitian physics of levitated nanoparticle arrayKazuki YokomizoYuto AshidaThe ability to control levitated nanoparticles allows one to explore various fields of physics, including quantum optics, quantum metrology, and nonequilibrium physics. It has been recently demonstrated that the arrangement of two levitated nanoparticles naturally realizes the tunable nonreciprocal dipole-dipole interaction. Motivated by this development, we here propose and analyze an array of levitated nanoparticles as an ideal platform to study non-Hermitian physics in a highly controlled manner. We employ the non-Bloch band theory to determine the continuum bands of the proposed setup and investigate the non-Hermitian skin effect therein. In particular, we point out that the levitated nanoparticle array exhibits rich dynamical phases, including the dynamically unstable phase and the unconventional critical phase where the spectral singularity persists over a broad region of the controllable parameters. We also show that the long-range nature of the dipole-dipole interaction gives rise to the unique self-crossing point of the continuum band.http://doi.org/10.1103/PhysRevResearch.5.033217 |
| spellingShingle | Kazuki Yokomizo Yuto Ashida Non-Hermitian physics of levitated nanoparticle array Physical Review Research |
| title | Non-Hermitian physics of levitated nanoparticle array |
| title_full | Non-Hermitian physics of levitated nanoparticle array |
| title_fullStr | Non-Hermitian physics of levitated nanoparticle array |
| title_full_unstemmed | Non-Hermitian physics of levitated nanoparticle array |
| title_short | Non-Hermitian physics of levitated nanoparticle array |
| title_sort | non hermitian physics of levitated nanoparticle array |
| url | http://doi.org/10.1103/PhysRevResearch.5.033217 |
| work_keys_str_mv | AT kazukiyokomizo nonhermitianphysicsoflevitatednanoparticlearray AT yutoashida nonhermitianphysicsoflevitatednanoparticlearray |