Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics
Exploring non-Hermitian phenomenology is an exciting frontier of modern physics. However, the demonstration of a non-Hermitian phenomenon that is quantum in nature has remained elusive. Here, we predict quantum non-Hermitian phenomena: the fractional quantum Zeno (FQZ) effect and FQZ-induced photon...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-07-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.13.031009 |
| _version_ | 1797773420886228992 |
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| author | Yue Sun Tao Shi Zhiyong Liu Zhidong Zhang Liantuan Xiao Suotang Jia Ying Hu |
| author_facet | Yue Sun Tao Shi Zhiyong Liu Zhidong Zhang Liantuan Xiao Suotang Jia Ying Hu |
| author_sort | Yue Sun |
| collection | DOAJ |
| description | Exploring non-Hermitian phenomenology is an exciting frontier of modern physics. However, the demonstration of a non-Hermitian phenomenon that is quantum in nature has remained elusive. Here, we predict quantum non-Hermitian phenomena: the fractional quantum Zeno (FQZ) effect and FQZ-induced photon antibunching. We consider a quantum optics platform with reservoir engineering, where nonlinear emitters are coupled to a bath of decaying bosonic modes whose own decay rates form band structures. By engineering the dissipation band, the spontaneous emission of emitters can be suppressed by strong dissipation through an algebraic scaling with fractional exponents—the FQZ effect. This fractional scaling originates uniquely from the divergent dissipative density of states near the dissipation band edge, different from the traditional closed-bath context. We find FQZ-induced strong photon antibunching in the steady state of a driven emitter even for weak nonlinearities. Remarkably, we identify that the sub-Poissonian quantum statistics of photons, which has no classical analogs, stems here from the key role of non-Hermiticity. Our setup is experimentally feasible with the techniques used to design lattice models with dissipative couplings. |
| first_indexed | 2024-03-12T22:06:14Z |
| format | Article |
| id | doaj.art-9988c96b5c274bdb8e97dc46ac2e0bb9 |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-03-12T22:06:14Z |
| publishDate | 2023-07-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-9988c96b5c274bdb8e97dc46ac2e0bb92023-07-24T14:30:59ZengAmerican Physical SocietyPhysical Review X2160-33082023-07-0113303100910.1103/PhysRevX.13.031009Fractional Quantum Zeno Effect Emerging from Non-Hermitian PhysicsYue SunTao ShiZhiyong LiuZhidong ZhangLiantuan XiaoSuotang JiaYing HuExploring non-Hermitian phenomenology is an exciting frontier of modern physics. However, the demonstration of a non-Hermitian phenomenon that is quantum in nature has remained elusive. Here, we predict quantum non-Hermitian phenomena: the fractional quantum Zeno (FQZ) effect and FQZ-induced photon antibunching. We consider a quantum optics platform with reservoir engineering, where nonlinear emitters are coupled to a bath of decaying bosonic modes whose own decay rates form band structures. By engineering the dissipation band, the spontaneous emission of emitters can be suppressed by strong dissipation through an algebraic scaling with fractional exponents—the FQZ effect. This fractional scaling originates uniquely from the divergent dissipative density of states near the dissipation band edge, different from the traditional closed-bath context. We find FQZ-induced strong photon antibunching in the steady state of a driven emitter even for weak nonlinearities. Remarkably, we identify that the sub-Poissonian quantum statistics of photons, which has no classical analogs, stems here from the key role of non-Hermiticity. Our setup is experimentally feasible with the techniques used to design lattice models with dissipative couplings.http://doi.org/10.1103/PhysRevX.13.031009 |
| spellingShingle | Yue Sun Tao Shi Zhiyong Liu Zhidong Zhang Liantuan Xiao Suotang Jia Ying Hu Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics Physical Review X |
| title | Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics |
| title_full | Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics |
| title_fullStr | Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics |
| title_full_unstemmed | Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics |
| title_short | Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics |
| title_sort | fractional quantum zeno effect emerging from non hermitian physics |
| url | http://doi.org/10.1103/PhysRevX.13.031009 |
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