Geometric phase for mixed squeezed-coherent states

• URL: http://arxiv.org/abs/2410.15482v1
• Date: Sun, 20 Oct 2024 19:37:14 GMT
• Title: Geometric phase for mixed squeezed-coherent states
• Authors: Sanaz Mohammadi Almas, Ghader Najarbashi,
• Abstract summary: We investigate the geometric phase acquired by two-mode mixed squeezed-coherent states (SCSs) during unitary cyclic evolution. We analyze the GP for three distinct mixed states characterized by different configurations of the SCSs.
• Score: 0.0
• License:
• Abstract: In this paper, we investigate the geometric phase (GP) acquired by two-mode mixed squeezed-coherent states (SCSs) during unitary cyclic evolution, focusing on the influence of squeezing parameters and classical weight. We analyze the GP for three distinct mixed states characterized by different configurations of the SCSs. Our results reveal that increasing the squeezing parameters of individual modes compresses the GP contours in different patterns: linearly, hyperbolically, and elliptically, depending on the mixed-state configuration. This behavior highlights the precision enhancement in squeezed states through uncertainty adjustment, aligning with theoretical predictions.

Related papers

• Spontaneous Strong Symmetry Breaking in Open Systems: Purification Perspective [0.0]
  We analyze the spontaneous strong-to-weak symmetry breaking in mixed states triggered by local quantum channels. We map this decoherence process to unitary operations in the purified state within an extended Hilbert space. This purification perspective is further extended to explore intrinsic mixed-state topological order and decoherent symmetry-protected topological phases.
  arXiv  Detail & Related papers  (2024-05-03T18:00:04Z)
• Dynamics of inhomogeneous spin ensembles with all-to-all interactions: breaking permutational invariance [49.1574468325115]
  We investigate the consequences of introducing non-uniform initial conditions in the dynamics of spin ensembles characterized by all-to-all interactions. We find that the dynamics of the spin ensemble now spans a more expansive effective Hilbert space.
  arXiv  Detail & Related papers  (2023-09-19T16:44:14Z)
• Geometric phase for two-mode entangled squeezed-coherent states [0.0]
  We study the geometric phase of two-mode entangled squeezed-coherent states (ESCSs) We suggest a theoretical scheme for the physical generation of the balanced ESCS.
  arXiv  Detail & Related papers  (2023-04-17T11:08:23Z)
• Collective dynamics of the unbalanced three-level Dicke model [1.6621646421302865]
  We study a three-level Dicke model in V-configuration under both closed and open conditions. With independently tunable co- and counter-rotating coupling strength of the interaction Hamiltonian, this model is a generalization of the standard Dicke model. It is found that the system exhibits rich quantum phase behaviours, including distinct superradiant fixed points, multi-phase coexistence and limit cycle oscillation.
  arXiv  Detail & Related papers  (2022-11-14T11:58:54Z)
• Observation of dynamical topology in 1D [0.0]
  We realize the 1D bipartite Rice-Mele (RM) lattice using ultracold $87$Rb and focus on lattice configurations possessing various combinations of chiral, time-reversal and particle-hole symmetries. We quenched between configurations and used a form of quantum state tomography, enabled by diabatically tuning lattice parameters, to directly follow the time evolution of the Zak phase as well as a chiral winding number.
  arXiv  Detail & Related papers  (2022-03-14T19:07:43Z)
• Three-fold way of entanglement dynamics in monitored quantum circuits [68.8204255655161]
  We investigate the measurement-induced entanglement transition in quantum circuits built upon Dyson's three circular ensembles. We obtain insights into the interplay between the local entanglement generation by the gates and the entanglement reduction by the measurements.
  arXiv  Detail & Related papers  (2022-01-28T17:21:15Z)
• Phase diagram of Rydberg-dressed atoms on two-leg square ladders: Coupling supersymmetric conformal field theories on the lattice [52.77024349608834]
  We investigate the phase diagram of hard-core bosons in two-leg ladders in the presence of soft-shoulder potentials. We show how the competition between local and non-local terms gives rise to a phase diagram with liquid phases with dominant cluster, spin, and density-wave quasi-long-range ordering.
  arXiv  Detail & Related papers  (2021-12-20T09:46:08Z)
• Topological transitions with continuously monitored free fermions [68.8204255655161]
  We show the presence of a topological phase transition that is of a different universality class than that observed in stroboscopic projective circuits. We find that this entanglement transition is well identified by a combination of the bipartite entanglement entropy and the topological entanglement entropy.
  arXiv  Detail & Related papers  (2021-12-17T22:01:54Z)
• Geometric phase in a dissipative Jaynes-Cummings model: theoretical explanation for resonance robustness [68.8204255655161]
  We compute the geometric phases acquired in both unitary and dissipative Jaynes-Cummings models. In the dissipative model, the non-unitary effects arise from the outflow of photons through the cavity walls. We show the geometric phase is robust, exhibiting a vanishing correction under a non-unitary evolution.
  arXiv  Detail & Related papers  (2021-10-27T15:27:54Z)
• Effects of symmetry breaking of the structurally-disordered Hamiltonian ensembles on the anisotropic decoherence of qubits [0.6853165736531939]
  We show that a new approach of average over disordered Hamiltonian ensemble is capable of describing the nonclassicality of incoherent dynamics. Under the variable separation of the probability distribution within the Hamiltonian ensemble, the geometrical structure is easily visualized. We demonstrate four degrees and investigate the effects of different types of symmetry breaking on the incoherent dynamics.
  arXiv  Detail & Related papers  (2021-04-27T14:43:03Z)
• SU$(3)_1$ Chiral Spin Liquid on the Square Lattice: a View from Symmetric PEPS [55.41644538483948]
  Quantum spin liquids can be faithfully represented and efficiently characterized within the framework of Projectedangled Pair States (PEPS) Characteristic features are revealed by the entanglement spectrum (ES) on an infinitely long cylinder. Special features in the ES are shown to be in correspondence with bulk anyonic correlations, indicating a fine structure in the holographic bulk-edge correspondence.
  arXiv  Detail & Related papers  (2019-12-31T16:30:25Z)

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.