Spontaneous PT-symmetry breaking transitions under the influence of noise in an optomechanical system

• URL: http://arxiv.org/abs/2408.04881v1
• Date: Fri, 9 Aug 2024 06:05:59 GMT
• Title: Spontaneous PT-symmetry breaking transitions under the influence of noise in an optomechanical system
• Authors: A. R. Mukhamedyanov, E. S. Andrianov, A. A. Zyablovsky,
• Abstract summary: Spontaneous symmetry breaking is a phenomenon of an alteration of a state symmetry without a change in the system symmetry. In this letter, we consider the behavior of an optomechanical system with an exceptional point under the influence of noise.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Spontaneous symmetry breaking is a phenomenon of an alteration of a state symmetry without a change in the system symmetry. A transition from a state with unbroken symmetry to a state with broken symmetry leads to a qualitative change in system properties, and respective states are called as symmetric and non-symmetric phases of the system. Usually, the change in the system parameters is necessary for the transition between symmetric and non-symmetric phases. In this letter, we consider the behavior of an optomechanical system with an exceptional point under the influence of noise. We demonstrate that below the exceptional point, PT-symmetric and non-PT-symmetric phases can coexist. In this regime, a noise can lead to random transitions between the symmetric and non-symmetric phases. These transitions are accompanied by the abrupt changes in the intensities of photon and phonon modes. The predicted phenomenon opens up the possibility of studying the kinetics of phase transitions caused by spontaneous breaking of PT symmetry.

Related papers

• Diagnosing Strong-to-Weak Symmetry Breaking via Wightman Correlators [20.572965801171225]
  Recent developments have extended the discussion of symmetry and its breaking to mixed states. We propose the Wightman correlator as an alternative diagnostic tool.
  arXiv  Detail & Related papers  (2024-10-12T02:04:40Z)
• Measurement-induced entanglement transition in chaotic quantum Ising chain [42.87502453001109]
  We study perturbations that break the integrability and/or the symmetry of the model, as well as modifications in the measurement protocol, characterizing the resulting chaos and lack of integrability through the Dissipative Spectral Form Factor (DSFF) We show that while the measurement-induced phase transition and its properties appear broadly insensitive to lack of integrability and breaking of the $bbZ$ symmetry, a modification of the measurement basis from the transverse to the longitudinal direction makes the phase transition disappear altogether.
  arXiv  Detail & Related papers  (2024-07-11T17:39:29Z)
• Spontaneous symmetry breaking in open quantum systems: strong, weak, and strong-to-weak [4.41737598556146]
  We show that strong symmetry always spontaneously breaks into the corresponding weak symmetry. We conjecture that this relation among strong-to-weak symmetry breaking, gapless modes, and symmetry-charge diffusion is general for continuous symmetries.
  arXiv  Detail & Related papers  (2024-06-27T17:55:36Z)
• Three perspectives on entropy dynamics in a non-Hermitian two-state system [41.94295877935867]
  entropy dynamics as an indicator of physical behavior in an open two-state system with balanced gain and loss is presented. We distinguish the perspective taken in utilizing the conventional framework of Hermitian-adjoint states from an approach that is based on biorthogonal-adjoint states and a third case based on an isospectral mapping.
  arXiv  Detail & Related papers  (2024-04-04T14:45:28Z)
• Symmetry restoration and quantum Mpemba effect in symmetric random circuits [3.326868738829707]
  Entanglement asymmetry serves as a diagnostic tool for symmetry breaking and a proxy for thermalization. In this Letter, we investigate symmetry restoration in various symmetric random quantum circuits.
  arXiv  Detail & Related papers  (2024-03-13T12:20:03Z)
• Phases of Matrix Product States with Symmetric Quantum Circuits and Symmetric Measurements with Feedforward [0.2010986461330016]
  Two matrix product states (MPS) are in the same phase in the presence of symmetries. We consider how symmetry-preserving measurements with feedforward alter the phase classification of MPS in the presence of global on-site symmetries.
  arXiv  Detail & Related papers  (2023-12-21T13:38:46Z)
• Asymmetry activation and its relation to coherence under permutation operation [53.64687146666141]
  A Dicke state and its decohered state are invariant for permutation. When another qubits state to each of them is attached, the whole state is not invariant for permutation, and has a certain asymmetry for permutation.
  arXiv  Detail & Related papers  (2023-11-17T03:33:40Z)
• Spontaneous symmetry emergence in a Hermitian system without symmetry [0.0]
  We show that the system state can acquire symmetry, which is not inherent to the system Hamiltonian. The emergence of symmetry manifests itself in a change of the system dynamics, which can be interpreted as a phase transition in a Hermitian system without symmetry.
  arXiv  Detail & Related papers  (2022-09-26T08:11:10Z)
• Approximately Equivariant Networks for Imperfectly Symmetric Dynamics [24.363954435050264]
  We find that our models can outperform both baselines with no symmetry bias and baselines with overly strict symmetry in both simulated turbulence domains and real-world multi-stream jet flow.
  arXiv  Detail & Related papers  (2022-01-28T07:31:28Z)
• 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)
• Symmetry-Protected Scattering in Non-Hermitian Linear Systems [0.0]
  The symmetry-protected scattering in non-Hermitian linear systems is investigated by employing the discrete symmetries that classify the random matrices. The odd-parity symmetries including the particle-hole symmetry, chiral symmetry, and sublattice symmetry cannot ensure the scattering to be symmetric. Our findings provide fundamental insights into symmetry and scattering ranging from condensed matter physics to quantum physics and optics.
  arXiv  Detail & Related papers  (2021-01-04T10:30:00Z)

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.