Temporal-order-driven asymmetric quantum interference and temporal coherence enhancement in spontaneous six-wave mixing

• URL: http://arxiv.org/abs/2510.16521v1
• Date: Sat, 18 Oct 2025 14:38:04 GMT
• Title: Temporal-order-driven asymmetric quantum interference and temporal coherence enhancement in spontaneous six-wave mixing
• Abstract summary: We analytically investigate the generation mechanism of energy-time entangled triphotons in transparency-assisted five-level cold atomic system.<n>Results establish a rigorous physical framework for spontaneous six-wave mixing-generated triphotons.
• Score: 3.8074821083626547
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Narrow-band multiphoton entanglement sources serve as a core enabling resource for advanced quantum information technologies. Recently, researchers have directly generated energy-time entangled triphoton W states in a hot atomic medium via spontaneous six-wave mixing for the first time. However, a rigorous theoretical framework for this process remains lacking to date, confining our understanding to a mere extension of the biphoton model. Here, we analytically investigate the generation mechanism of energy-time entangled triphotons and their classically controllable optical properties in an electromagnetically induced transparency-assisted five-level cold atomic system. Notably, triphoton generation follows strict temporal ordering, resulting in asymmetric quantum interference in triple coincidence counts--unreplicable and unexplainable by the inherently symmetric biphoton model. These results establish a rigorous physical framework for spontaneous six-wave mixing-generated triphotons, clarify their distinctions from states produced via cascaded nonlinear models, and substantially advance their utility in quantum information protocols.

Related papers

• Generation of energy-time entangled triphotons in a six-level cold atomic system [1.6026980464879068]
  We investigate the generation of energy-time-entangled triphotons in a six-level cold atomic ensemble.<n>Results lay the groundwork for the experimental preparation of triphotons using six-level systems.
  arXiv  Detail & Related papers  (2026-04-20T11:27:26Z)
• 3D imaging of the biphoton spatiotemporal wave packet [3.0148398217181445]
  Photons are among the most important carriers of quantum information owing to their rich degrees of freedom (DoFs)<n>The ability to characterize these DoFs as well as the hidden correlations determines whether they can be exploited for quantum tasks.<n>Here, we experimentally demonstrate a self-referenced, high-efficiency, and all-optical method, termed 3D photonic wave packets, for comprehensive characterization of a quantum light field.
  arXiv  Detail & Related papers  (2026-01-29T04:16:09Z)
• Triphoton generation near atomic resonance via SSWM: Harmonic expansion for accurate optical response [0.0]
  Quantum correlations of time-frequency-entangled photon pairs generated via parametric processes are critically influenced by the linear and nonlinear optical responses of the medium.<n>We generalize the harmonic expansion method originally introduced by Wen for biphoton generation near atomic resonance.<n>Our results demonstrate the method's superior accuracy and self-consistency, offering clear advantages over traditional calculation techniques.
  arXiv  Detail & Related papers  (2025-10-18T14:28:26Z)
• Nonclassical Driven-Dissipative Dynamics in Collective Quantum Optics [51.56484100374058]
  We study ensembles of interacting quantum emitters coherently driven by a laser field and coupled to photonic structures.<n>We find that off-resonant virtual states may gain population through dissipation, redefining their role in open systems.<n>Our models address challenges like inhomogeneous broadening and decoherence, demonstrating the feasibility of harnessing cooperative light-matter effects for quantum technologies.
  arXiv  Detail & Related papers  (2025-09-12T20:01:55Z)
• 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.<n>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)
• On Chip Quantum States Generation by Incoherent Light [6.377947324487696]
  Incoherent light is rarely used in quantum information processing.<n>We show that pumped temporal incoherence of light can improve pumping utilization efficiency.<n>We successfully generate a polarization-entangled state with Bell inequality violation of S = 2.64 and a fidelity of 95.7%.
  arXiv  Detail & Related papers  (2024-12-05T01:45:27Z)
• Correlated relaxation and emerging entanglement in arrays of $Λ$-type atoms [83.88591755871734]
  We show that the atomic entanglement emerges in the course of relaxation and persists in the final steady state of the system. Our findings open a new way to engineer dissipation-induced entanglement.
  arXiv  Detail & Related papers  (2024-11-11T08:39:32Z)
• Direct generation of time-energy-entangled W triphotons in atomic vapor [11.25178484013512]
  We report continuous-mode time-energy-entangled W-class triphotons with an unprecedented generation rate. Our work paves a way for the development of a reliable and efficient genuine triphoton source.
  arXiv  Detail & Related papers  (2023-03-14T15:32:07Z)
• Quantum vortices of strongly interacting photons [52.131490211964014]
  Vortices are hallmark of nontrivial dynamics in nonlinear physics. We report on the realization of quantum vortices resulting from a strong photon-photon interaction in a quantum nonlinear optical medium. For three photons, the formation of vortex lines and a central vortex ring attests to a genuine three-photon interaction.
  arXiv  Detail & Related papers  (2023-02-12T18:11:04Z)
• Correlated steady states and Raman lasing in continuously pumped and probed atomic ensembles [68.8204255655161]
  We consider an ensemble of Alkali atoms that are continuously optically pumped and probed. Due to the collective scattering of photons at large optical depth, the steady state of atoms does not correspond to an uncorrelated tensor-product state. We find and characterize regimes of Raman lasing, akin to the model of a superradiant laser.
  arXiv  Detail & Related papers  (2022-05-10T06:54:54Z)
• Hyperentanglement in structured quantum light [50.591267188664666]
  Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes. We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
  arXiv  Detail & Related papers  (2020-06-02T18:00:04Z)
• 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.