Compound beams for direct experimental comparison of quantum operations

• URL: http://arxiv.org/abs/2608.09518v1
• Date: Mon, 10 Aug 2026 12:16:57 GMT
• Title: Compound beams for direct experimental comparison of quantum operations
• Abstract summary: Compound beams composed of simple experimental blocks are suggested for simulating the properties of different quantum operations.<n>Adding and subtracting up to twenty photocounts, optimal conditions for the generation of experimental nonclassical states are identified.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Compound beams composed of simple experimental blocks (detected in simultaneous detection windows) that form specific quantum-correlated structures are suggested for simulating the properties of different quantum operations used for creating highly nonclassical and entangled multi-mode states needed in quantum communication, metrology, and information protocols. Qualitative and quantitative comparison of multi-photon addition and subtraction in compound multi-mode thermal as well as sub-Poissonian beams and multi-mode twin beams with their intensities extending over two orders in magnitude is provided. Adding and subtracting up to twenty photocounts, optimal conditions for the generation of experimental nonclassical states are identified. In general, photon addition is identified as advantageous over photon subtraction for the multi-mode thermal and sub-Poissonian beams: It induces (enhances) the nonclassicality in the former (latter) state. Contrary to this, photon subtraction outperforms photon addition in the multi-mode twin beams. Moreover, exploiting temporal photon-pair correlations in compound twin beams when post-selecting, nearly ideal experimental photon(s) addition is demonstrated.

Related papers

• Multi-Photon Lasing Phenomena in Quantum Dot-Cavity QED [0.0]
  Coherence between the internal states of a quantum emitter, or among multiple emitters, plays a key role.<n>This thesis explores the multi-photon lasing phenomena in various quantum dot-photonic crystal cavity quantum electrodynamic setups.
  arXiv  Detail & Related papers  (2025-12-15T16:44:08Z)
• Photon-mediated interactions and dynamics of coherently driven quantum emitters in complex photonic environments [41.94295877935867]
  Born-Markov master equations have been extensively employed in the description of quantum optical phenomena.<n>We benchmark this modeling approach for the quantum dynamics of the emitter pair against exact calculations based on a macroscopic field quantization formalism.<n>Our analysis reveals four distinct regimes of laser driving and frequency splitting that lead to markedly different levels of accuracy in the effective model.
  arXiv  Detail & Related papers  (2025-08-01T09:38:07Z)
• Experimental photon addition and subtraction in multi-mode and entangled optical fields [0.0]
  Multiple photon addition and subtraction is mutually compared using one experimental setup. Twin beams with tight spatial correlations detected by an intensified CCD camera with high spatial resolution are used. Up to three photons are added or subtracted to arrive at the nonclassical and non-Gaussian states.
  arXiv  Detail & Related papers  (2024-07-12T13:52:46Z)
• Experimental preparation of multiphoton-added coherent states of light [0.0]
  Conditional addition of photons is a crucial tool for optical quantum state engineering. We demonstrate the addition of one, two, and three photons to input coherent states with various amplitudes. Results pave the way towards the experimental realization of complex optical quantum operations.
  arXiv  Detail & Related papers  (2024-05-16T19:06:52Z)
• Strong coupling between a single-photon and a two-photon Fock state [44.00303450801203]
  We report an experimental observation of the strong coupling between a single-photon and a two-photon Fock state in an ultrastrongly-coupled circuit-QED system.<n>Results represent a key step towards a new regime of quantum nonlinear optics.
  arXiv  Detail & Related papers  (2024-01-05T10:23:14Z)
• Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
  Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols. We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
  arXiv  Detail & Related papers  (2023-04-24T15:43:08Z)
• 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)
• 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)
• Nonclassical correlated deterministic single-photon pairs for a trapped atom in bimodal cavities [0.0]
  Single photons and single-photon pairs, inherently nonclassical in their nature, are fundamental elements of quantum sciences and technologies. We propose to realize the nonclassical correlated deterministic photon pairs at the single-photon level for a single atom trapped in bimodal cavities.
  arXiv  Detail & Related papers  (2022-04-15T08:05:26Z)
• Compound twin beams without the need of genuine photon-number-resolving detection [0.0]
  The non-classicality of compound twin beams is analyzed for intensities up to hundreds of photon pairs. The use of such compound twin beams for the generation of sub-Poissonian light absorption and measurement of with sub-shot-noise precision is analyzed. A suitable theoretical model for the compound twin beams is developed to interpret the experimental data.
  arXiv  Detail & Related papers  (2021-08-27T18:16:34Z)
• 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)

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.