Subdiffusive dynamics in photonic random walks probed with classical light

• URL: http://arxiv.org/abs/2410.02287v1
• Date: Thu, 3 Oct 2024 08:12:54 GMT
• Title: Subdiffusive dynamics in photonic random walks probed with classical light
• Abstract summary: We show that the random walk of intense classical light under dephasing dynamics can disentangle quantum and ensemble averaging. We propose photonic random walks in synthetic temporal lattices, based on pulse dynamics in coupled fiber loops.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The random walk of photons in a tight-binding lattice is known to exhibit diffusive motion similar to classical random walks under decoherence, clearly illustrating the quantum-to-classical transition. In this study, we reveal that the random walk of intense classical light under dephasing dynamics can disentangle quantum and ensemble averaging, making it possible to observe a subdiffusive walker dynamics, i.e. a behavior very distinct from both a classical and a quantum walker. These findings are demonstrated through proposing photonic random walks in synthetic temporal lattices, based on pulse dynamics in coupled fiber loops.

Related papers

• High-Order Harmonic Generation with Beyond-Semiclassical Emitter Dynamics: A Strong-Field Quantum Optical Heisenberg Picture Approach [0.0]
  We develop an accurately controlled perturbative expansion of the time-evolution operator in the Heisenberg picture.<n>We derive beyond-semiclassical corrections to the emitter dynamics due to the coupling to the quantized electromagnetic field.<n>We find that the degree of squeezing increases with the number of emitters, whereas the photon statistics approaches a classical Poissonian distribution in the many-emitter limit.
  arXiv  Detail & Related papers  (2025-12-16T08:06:57Z)
• Quantum Signatures of Strange Attractors [0.0]
  In classical mechanics, driven systems with dissipation often exhibit complex, fractal dynamics known as strange attractors.<n>This paper addresses the fundamental question of how such structures manifest in the quantum realm.<n>By employing the Husimi distribution to represent the quantum state in phase space, we present the first visualization of a quantum strange attractor within this model.
  arXiv  Detail & Related papers  (2025-10-01T19:52:16Z)
• Constructive interference at the edge of quantum ergodic dynamics [116.94795372054381]
  We characterize ergodic dynamics using the second-order out-of-time-order correlators, OTOC$(2)$.<n>In contrast to dynamics without time reversal, OTOC$(2)$ are observed to remain sensitive to the underlying dynamics at long time scales.
  arXiv  Detail & Related papers  (2025-06-11T21:29:23Z)
• Classical representation of the dynamics of quantum spin chains [0.0]
  A notable issue arises with the emergence of negative probabilities when attempting to define the joint probability of non-commutative observables.<n>We propose a resolution to this dilemma by introducing an exact representation of their dynamics in terms of classical continuous-time Markov chains.
  arXiv  Detail & Related papers  (2025-02-14T19:00:11Z)
• How to seed ergodic dynamics of interacting bosons under conditions of many-body quantum chaos [0.0]
  We demonstrate how the initial state of ultracold atoms in an optical lattice controls the emergence of ergodic dynamics. Distinct initial states' chaos threshold values in terms of tunneling as compared to interaction strength are identified.
  arXiv  Detail & Related papers  (2025-01-23T10:59:57Z)
• Cavity quantum electrodynamics of photonic temporal crystals [11.957592902904516]
  Photonic temporal crystals host a variety of intriguing phenomena, from wave amplification and mixing to exotic band structures. We introduce a quantum electrodynamical model of PTCs that reveals a deeper connection between classical and quantum pictures.
  arXiv  Detail & Related papers  (2025-01-06T16:13:03Z)
• Wave packet dynamics in parabolic optical lattices: From Bloch oscillations to long-range dynamical tunneling [0.8648069350164062]
  We show that quantum states can exhibit mixed dynamics by straddling the separatrix. A slight energy mismatch between nearly-degenerate states results in controlled long-range dynamical tunneling.
  arXiv  Detail & Related papers  (2024-10-14T17:08:05Z)
• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• Photon Squeezing in Photonic Time Crystals [0.0]
  Time-varying media offer a platform to realize novel and exotic wave effects. We focus on the quantum electrodynamical properties of time-varying media, in particular vacuum amplification and squeezing.
  arXiv  Detail & Related papers  (2024-05-08T13:28:01Z)
• A pseudoclassical theory for the wavepacket dynamics of the kicked rotor model [9.999639052868234]
  The proposed theory is applicable in the neighborhoods of all quantum resonances in principle. The application of the generalized pseudoclassical theory to the $mathcalPT$-symmetric kicked rotor is also discussed.
  arXiv  Detail & Related papers  (2024-01-29T01:13:17Z)
• The role of fluctuations in quantum and classical time crystals [58.720142291102135]
  We study the role of fluctuations on the stability of the system and find no distinction between quantum and classical DTCs. This allows us to probe the fluctuations in an experiment using two strongly coupled parametric resonators subject to classical noise.
  arXiv  Detail & Related papers  (2022-03-10T19:00:01Z)
• Floquet engineering of optical nonlinearities: a quantum many-body approach [0.0]
  Floquet-engineering has been extensively applied to a wide range of classical and quantum settings. We show that effective optical nonlinearities can be created by subjecting the light field to a repeated pulse sequence.
  arXiv  Detail & Related papers  (2022-03-10T18:58:35Z)
• Unification of Random Dynamical Decoupling and the Quantum Zeno Effect [68.8204255655161]
  We show that the system dynamics under random dynamical decoupling converges to a unitary with a decoupling error that characteristically depends on the convergence speed of the Zeno limit. This reveals a unification of the random dynamical decoupling and the quantum Zeno effect.
  arXiv  Detail & Related papers  (2021-12-08T11:41:38Z)
• Entanglement dynamics of spins using a few complex trajectories [77.34726150561087]
  We consider two spins initially prepared in a product of coherent states and study their entanglement dynamics. We adopt an approach that allowed the derivation of a semiclassical formula for the linear entropy of the reduced density operator.
  arXiv  Detail & Related papers  (2021-08-13T01:44:24Z)
• Bloch-Landau-Zener dynamics induced by a synthetic field in a photonic quantum walk [52.77024349608834]
  We realize a photonic quantum walk in the presence of a synthetic gauge field. We investigate intriguing system dynamics characterized by the interplay between Bloch oscillations and Landau-Zener transitions.
  arXiv  Detail & Related papers  (2020-11-11T16:35:41Z)
• Classical and quantum dynamical manifestations of index-2 saddles: concerted versus sequential reaction mechanisms [0.0]
  We study the presence of higher index saddles on a multidimensional potential energy surface. We show that the ultrafast shift of the mechanism from a concerted to a stepwise one is essentially a classical dynamical effect.
  arXiv  Detail & Related papers  (2020-09-16T14:39:20Z)
• Theory of waveguide-QED with moving emitters [68.8204255655161]
  We study a system composed by a waveguide and a moving quantum emitter in the single excitation subspace. We first characterize single-photon scattering off a single moving quantum emitter, showing both nonreciprocal transmission and recoil-induced reduction of the quantum emitter motional energy.
  arXiv  Detail & Related papers  (2020-03-20T12:14:10Z)

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.