Nonreciprocal slow or fast light in anti-$\mathcal{PT}$-symmetric optomechanics

• URL: http://arxiv.org/abs/2302.13627v1
• Date: Mon, 27 Feb 2023 09:52:55 GMT
• Title: Nonreciprocal slow or fast light in anti-$\mathcal{PT}$-symmetric optomechanics
• Authors: Meiyu Peng, Huilai Zhang, Qian Zhang, Tian-Xiang Lu, Imran M. Mirza and Hui Jing
• Abstract summary: We study optomechanics in an $mathcalAPT$-symmetric spinning resonator. Nonreciprocal light transmission with a high isolation ratio can be realized. Our work sheds new light on manipulating laser propagation with optomechanical EP devices.
• Score: 2.5048156277578566
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Non-Hermitian systems with anti-parity-time ($\mathcal{APT}$) symmetry have revealed rich physics beyond conventional systems. Here, we study optomechanics in an $\mathcal{APT}$-symmetric spinning resonator and show that, by tuning the rotating speed to approach the exceptional point (EP) or the non-Hermitian spectral degeneracy, nonreciprocal light transmission with a high isolation ratio can be realized. Accompanying this process, nonreciprocal group delay or advance is also identified in the vicinity of EP. Our work sheds new light on manipulating laser propagation with optomechanical EP devices and, in a broader view, can be extended to explore a wide range of $\mathcal{APT}$-symmetric effects, such as $\mathcal{APT}$-symmetric phonon lasers, $\mathcal{APT}$-symmetric topological effects, and $\mathcal{APT}$-symmetric force sensing or accelerator.

Related papers

• Anti-parity-time symmetry hidden in a damping linear resonator [0.5461938536945723]
  Phase transition from the over-damping to under-damping states is a ubiquitous phenomenon in physical systems. Here, we discover that this phase transition is determined by an anti-parity-time symmetry hidden in a single damping linear resonator. We show that the breaking of the anti-$mathcalPT$ symmetry yields the phase transition from the over-damping to under-damping states.
  arXiv  Detail & Related papers  (2022-08-17T09:46:31Z)
• Lopsided optical diffraction in loop electromagnetically induced grating [5.965907404258522]
  We propose a theoretical scheme in a cold Rubidium-87 ($87$Rb) atomic ensemble with a non-Hermitian optical structure. A lopsided optical diffraction grating can be realized just with the combination of single spatially periodic modulation and loop-phase. Our work will benefit the development of versatile non-Hermitian/asymmetric optical devices.
  arXiv  Detail & Related papers  (2022-07-30T16:32:40Z)
• Noise-resilient Edge Modes on a Chain of Superconducting Qubits [103.93329374521808]
  Inherent symmetry of a quantum system may protect its otherwise fragile states. We implement the one-dimensional kicked Ising model which exhibits non-local Majorana edge modes (MEMs) with $mathbbZ$ parity symmetry. MEMs are found to be resilient against certain symmetry-breaking noise owing to a prethermalization mechanism.
  arXiv  Detail & Related papers  (2022-04-24T22:34:15Z)
• Non-Hermitian $C_{NH} = 2$ Chern insulator protected by generalized rotational symmetry [85.36456486475119]
  A non-Hermitian system is protected by the generalized rotational symmetry $H+=UHU+$ of the system. Our finding paves the way towards novel non-Hermitian topological systems characterized by large values of topological invariants.
  arXiv  Detail & Related papers  (2021-11-24T15:50:22Z)
• Information retrieval and eigenstates coalescence in a non-Hermitian quantum system with anti-$\mathcal{PT}$ symmetry [15.273168396747495]
  Non-Hermitian systems with parity-time reversal ($mathcalPT$) or anti-$mathcalPT$ symmetry have attracted a wide range of interest owing to their unique characteristics and counterintuitive phenomena. We implement a Floquet Hamiltonian of a single qubit with anti-$mathcalPT$ symmetry by periodically driving a dissipative quantum system of a single trapped ion.
  arXiv  Detail & Related papers  (2021-07-27T07:11:32Z)
• Topological optomechanical amplifier with synthetic $\mathcal{PT}$-symmetry [8.22643506114197]
  We find that harnessing the Stokes process in such a system can lead to the emergence of exceptional point. Our synthetic $mathcalPT$-symmetric optomechanics works as a topological optomechanical amplifier.
  arXiv  Detail & Related papers  (2021-07-22T02:10:15Z)
• SYK meets non-Hermiticity II: measurement-induced phase transition [16.533265279392772]
  We analytically derive the effective action in the large-$N$ limit and show that an entanglement transition is caused by the symmetry breaking in the enlarged replica space. We also verify the large-$N$ critical exponents by numerically solving the Schwinger-Dyson equation.
  arXiv  Detail & Related papers  (2021-04-16T17:55:08Z)
• Fermion and meson mass generation in non-Hermitian Nambu--Jona-Lasinio models [77.34726150561087]
  We investigate the effects of non-Hermiticity on interacting fermionic systems. We do this by including non-Hermitian bilinear terms into the 3+1 dimensional Nambu--Jona-Lasinio (NJL) model.
  arXiv  Detail & Related papers  (2021-02-02T13:56:11Z)
• Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics [77.34726150561087]
  We show that certain asymmetric non-Hermitian tight-binding models with a $mathbbZ$ symmetry yield a pronounced sensing advantage. Our setup is directly compatible with a variety of quantum optical and superconducting circuit platforms.
  arXiv  Detail & Related papers  (2020-04-01T17:14:14Z)
• Breaking Anti-$\mathcal{PT}$ Symmetry by Spinning a Resonator [4.12540043197439]
  We show how to achieve anti-$mathcalPT$ symmetry and its spontaneous breaking in a linear device by spinning a lossy resonator. Our work provides a new tool to study anti-$mathcalPT$ physics, with such a wide range of applications as anti-$mathcalPT$ lasers, anti-$mathcalPT$ gyroscopes, and anti-$mathcalPT$ topological photonics or optomechanics.
  arXiv  Detail & Related papers  (2020-03-09T16:38:44Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.