Temporal quantum eraser: Fusion gates with distinguishable photons

• URL: http://arxiv.org/abs/2404.01516v3
• Date: Thu, 18 Apr 2024 07:48:09 GMT
• Title: Temporal quantum eraser: Fusion gates with distinguishable photons
• Authors: Ziv Aqua, Barak Dayan,
• Abstract summary: We show that the ideal operation of two-photon gates can be recovered from distinguishable photons. We introduce a temporal quantum eraser between a pair of modally-impure single-photon sources. The ability to lift the requirement for identical photons bears considerable potential in linear-optics quantum information processing.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Linear-optics gates, the enabling tool of photonic quantum information processing, depend on indistinguishable photons, as they harness quantum interference to achieve nonlinear operations. Traditionally, meeting this criterion involves generating pure identical photons, a task that remains a significant challenge in the field. Yet, the required indistinguishability is linked to the spatial exchange symmetry of the multiphoton wavefunction and does not strictly necessitate identical photons. Here, we show that the ideal operation of two-photon gates, particularly fusion gates, can be recovered from distinguishable photons by ensuring the exchange symmetry of the input photonic state. To this end, we introduce a temporal quantum eraser between a pair of modally-impure single-photon sources, which heralds the symmetry of the generated two-photon state. We demonstrate this mechanism in two relevant platforms: parametric photon pair generation and single-photon extraction by a single quantum emitter. The ability to lift the requirement for identical photons bears considerable potential in linear-optics quantum information processing.

Related papers

• Non-classical excitation of a solid-state quantum emitter [0.0]
  We show that a single photon is sufficient to change the state of a solid-state quantum emitter. These results suggest future possibilities ranging from enabling quantum information transfer in a quantum network to building deterministic entangling gates for photonic quantum computing.
  arXiv  Detail & Related papers  (2024-07-30T16:16:58Z)
• Harnessing spontaneous emission of correlated photon pairs from ladder-type giant atoms [5.498509152557573]
  We show that a ladder-type three-level giant atom spontaneously emits strongly correlated photon pairs with high efficiency. By encoding local phases into the optimal coupling sequence, directional two-photon correlated transfer can be achieved. Such correlated photon pairs have great potential applications for quantum information processing.
  arXiv  Detail & Related papers  (2024-06-18T09:03:00Z)
• 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)
• On-chip quantum information processing with distinguishable photons [55.41644538483948]
  Multi-photon interference is at the heart of photonic quantum technologies. Here, we experimentally demonstrate that detection can be implemented with a temporal resolution sufficient to interfere photons detuned on the scales necessary for cavity-based integrated photon sources. We show how time-resolved detection of non-ideal photons can be used to improve the fidelity of an entangling operation and to mitigate the reduction of computational complexity in boson sampling experiments.
  arXiv  Detail & Related papers  (2022-10-14T18:16:49Z)
• Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
  We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems. Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
  arXiv  Detail & Related papers  (2022-06-03T14:52:34Z)
• A multipair-free source of entangled photons in the solid state [0.0]
  Multiphoton emission commonly reduces the degree of entanglement of photons generated by non-classical light sources. Quantum emitters have the potential to overcome this hurdle but, so far, the effect of multiphoton emission on the quality of entanglement has never been addressed in detail.
  arXiv  Detail & Related papers  (2022-03-31T14:50:16Z)
• Fundamental resolution limit of quantum imaging with undetected photons [0.0]
  Quantum imaging with undetected photons relies on the principle of induced coherence without induced emission. We investigate the transverse resolution of this non-local imaging scheme through a general formalism. We conclude that this result is also valid for other non-local two-photon imaging schemes.
  arXiv  Detail & Related papers  (2022-03-11T17:28:09Z)
• Two-photon resonance fluorescence of two interacting non-identical quantum emitters [77.34726150561087]
  We study a system of two interacting, non-indentical quantum emitters driven by a coherent field. We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters. This can be exploited for applications such as superresolution imaging of point-like sources.
  arXiv  Detail & Related papers  (2021-06-04T16:13:01Z)
• Tunable quantum interference using a topological source of indistinguishable photon pairs [0.0]
  We demonstrate the use of a two-dimensional array of ring resonators to generate indistinguishable photon pairs. We show that the linear dispersion of the edge states over a broad bandwidth allows us to tune the correlations. Our results pave the way for scalable and tunable sources of squeezed light.
  arXiv  Detail & Related papers  (2020-06-04T18:11:30Z)
• 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)
• Near-ideal spontaneous photon sources in silicon quantum photonics [55.41644538483948]
  Integrated photonics is a robust platform for quantum information processing. Sources of single photons that are highly indistinguishable and pure, that are either near-deterministic or heralded with high efficiency, have been elusive. Here, we demonstrate on-chip photon sources that simultaneously meet each of these requirements.
  arXiv  Detail & Related papers  (2020-05-19T16:46:44Z)

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.