Topological optomechanical amplifier with synthetic $\mathcal{PT}$-symmetry

• URL: http://arxiv.org/abs/2107.10421v2
• Date: Wed, 2 Feb 2022 04:38:54 GMT
• Title: Topological optomechanical amplifier with synthetic $\mathcal{PT}$-symmetry
• Authors: Jian-Qi Zhang, Jing-Xin Liu, Hui-Lai Zhang, Zhi-Rui Gong, Shuo Zhang, Lei-Lei Yan, Shi-Lei Su, Hui Jing, and Mang Feng
• Abstract summary: 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.
• Score: 8.22643506114197
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose how to achieve synthetic $\mathcal{PT}$ symmetry in optomechanics without using any active medium. We find that harnessing the Stokes process in such a system can lead to the emergence of exceptional point (EP), i.e., the coalescing of both the eigenvalues and the eigenvectors of the system. By encircling the EP, both non-reciprocal optical amplification and chiral mode switching can be achieved. As a result, our synthetic $\mathcal{PT}$-symmetric optomechanics works as a topological optomechanical amplifier. This provides a surprisingly simplified route to realize $\mathcal{PT}$-symmetric optomechanics, indicating that a wide range of EP devices can be created and utilized for various applications such as topological optical engineering and nanomechanical processing or sensing.

Related papers

• Oscillatory dissipative tunneling in an asymmetric double-well potential [32.65699367892846]
  Chemical research will benefit from a fully controllable, asymmetric double-well equipped with precise measurement capabilities of the tunneling rates. Our work paves the way for analog molecule simulators based on quantum superconducting circuits.
  arXiv  Detail & Related papers  (2024-09-19T22:43:07Z)
• Higher-Order Cellular Automata Generated Symmetry-Protected Topological Phases and Detection Through Multi-Point Strange Correlators [21.052345471463802]
  We introduce HOCA to quantum many-body physics and construct a series of symmetry-protected topological (SPT) phases of matter. We show that HOCA can generate not only well-understood SPTs with symmetries supported on either regular (e.g., line-like subsystems in the 2D cluster model) or fractal subsystems, but also a large class of unexplored SPTs with symmetries supported on more choices of subsystems.
  arXiv  Detail & Related papers  (2023-12-31T13:56:20Z)
• Single-Mode Squeezed Light Generation and Tomography with an Integrated Optical Parametric Oscillator [31.874825130479174]
  A key resource is squeezed light, where quantum noise is redistributed between optical quadratures. We introduce a monolithic, chip-scale platform that exploits the $chi(2)$ nonlinearity of a thin-film lithium niobate resonator device. Our work represents a substantial step toward compact and efficient quantum optical systems.
  arXiv  Detail & Related papers  (2023-10-19T17:53:36Z)
• Nonreciprocal slow or fast light in anti-$\mathcal{PT}$-symmetric optomechanics [2.5048156277578566]
  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.
  arXiv  Detail & Related papers  (2023-02-27T09:52:55Z)
• $\mathcal{PT}-$symmetry and chaos control via dissipative optomechanical coupling [0.0]
  We study a dissipative, mechanically coupled optomechanical system that accommodates gain and loss. The gain is engineered by driven a purely dispersive optomechanical cavity with a blue-detuned electromagnetic field.
  arXiv  Detail & Related papers  (2023-02-25T11:41:45Z)
• 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)
• Exact solutions of interacting dissipative systems via weak symmetries [77.34726150561087]
  We analytically diagonalize the Liouvillian of a class Markovian dissipative systems with arbitrary strong interactions or nonlinearity. This enables an exact description of the full dynamics and dissipative spectrum. Our method is applicable to a variety of other systems, and could provide a powerful new tool for the study of complex driven-dissipative quantum systems.
  arXiv  Detail & Related papers  (2021-09-27T17:45:42Z)
• Optomechanical dynamics in the $\mathcal{PT}$- and broken-$\mathcal{PT}$-symmetric regimes [0.36944296923226316]
  We study the dynamics of typical optomechanical systems in $mathcalPT$- and broken-$mathcalPT$-symmetric regimes. We find that by appropriately tuning either mechanical gain or optomechanical coupling, both phase transitions of the $mathcalPT$-symmetry and stability of the system can be flexibly controlled.
  arXiv  Detail & Related papers  (2021-07-29T10:54:00Z)
• $\mathcal{PT}$-symmetry breaking in a Kitaev chain with one pair of gain-loss potentials [0.0]
  Parity-time symmetric systems are governed by non-Hermitian Hamiltonians with exceptional-point (EP) degeneracies. Here, we obtain the $mathcalPT$-threshold for a one-dimensional, finite Kitaev chain. In particular, for an even chain with zero on-site potential, we find a re-entrant $mathcalPT$-symmetric phase bounded by second-order EP contours.
  arXiv  Detail & Related papers  (2021-03-12T03:10:45Z)
• QuTiP-BoFiN: A bosonic and fermionic numerical hierarchical-equations-of-motion library with applications in light-harvesting, quantum control, and single-molecule electronics [51.15339237964982]
  "hierarchical equations of motion" (HEOM) is a powerful exact numerical approach to solve the dynamics. It has been extended and applied to problems in solid-state physics, optics, single-molecule electronics, and biological physics. We present a numerical library in Python, integrated with the powerful QuTiP platform, which implements the HEOM for both bosonic and fermionic environments.
  arXiv  Detail & Related papers  (2020-10-21T07:54:56Z)
• Emergent $\mathcal{PT}$ symmetry in a double-quantum-dot circuit QED set-up [0.0]
  We show that a non-Hermitian Hamiltonian emerges naturally in a double-quantum-dot-circuit-QED set-up. Our results pave the way for an on-chip realization of a potentially scalable non-Hermitian system.
  arXiv  Detail & Related papers  (2020-04-16T09:08:31Z)

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.