Related papers: Indistinguishability of single Raman photons from single atoms

Indistinguishability of single Raman photons from single atoms

URL: http://arxiv.org/abs/2609.17009v1
Date: Tue, 15 Sep 2026 11:20:54 GMT
Title: Indistinguishability of single Raman photons from single atoms
Abstract summary: We theoretically investigate the indistinguishability of single photons generated from single trapped $40$Ca$+$ ions in a Raman scattering process.<n>Of particular interest is how spontaneous decay back to the initial state affects Hong-Ou-Mandel (HOM) photon interference.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: We theoretically investigate the indistinguishability of single photons generated from single trapped $^{40}$Ca$^+$ ions in a Raman scattering process driven by few-nanosecond excitation pulses. Of particular interest is how spontaneous decay back to the initial state affects Hong-Ou-Mandel (HOM) photon interference. Numerical simulations identify the mean number of back-decays as a measurable quantity that correlates with achievable HOM visibility. Optimization of the excitation pulse with respect to a trade-off between photon yield and indistinguishability is analyzed. Finally, we compare the performance of different trapped-ion species for long-range dual-rail entanglement swapping via HOM photon interference.

Related papers

Indistinguishability of photonic qubits emitted from trapped $^{40}$Ca$^+$ ions via pulsed excitation [0.0]
We investigate the indistinguishability of Raman photons generated from two trapped $40$Ca$+$ ions using few-nanosecond excitation pulses.<n>We elucidate how spontaneous scattering back to the initial state affects Hong-Ou-Mandel interference.
arXiv Detail & Related papers (2026-05-28T12:06:27Z)
Quantum Interference in Two-Atom Resonant X-ray Scattering of an Intense Attosecond Pulse [0.0]
We theoretically investigate resonant x-ray scattering from two non-interacting Ne+ ions driven by an intense attosecond pulse.<n>Our model includes Rabi oscillations, photoionization, Auger decay, and quantum interference among elastic scattering and resonance fluorescence pathways.
arXiv Detail & Related papers (2025-06-06T23:33:20Z)
Second-order correlations and purity of unheralded single photons from spontaneous parametric down-conversion [1.7396274240172125]
Various quantum technology applications require high-purity single photons with high generation rate. We present a revised expression to calculate second-order temporal correlation function, $g(2)$ for any fixed time window (bin)
arXiv Detail & Related papers (2022-07-14T15:09:58Z)
Direct observation of photon bound states using a single artificial atom [0.45507178426690204]
We report the direct observation of a photon-number-dependent time delay in the scattering off a single semiconductor quantum dot coupled to an optical cavity. The reduced time delay of the two-photon bound state is a fingerprint of the celebrated example of stimulated emission, where the arrival of two photons within the lifetime of an emitter causes one photon to stimulate the emission of the other from the atom.
arXiv Detail & Related papers (2022-05-06T15:41:59Z)
Single Photon Scattering Can Account for the Discrepancies Between Entangled Two-Photon Measurement Techniques [0.0]
Entangled photon pairs are predicted to linearize and increase the efficiency of two-photon absorption. Despite a range of theoretical studies and experimental measurements, inconsistencies persist about the value of the entanglement enhanced interaction cross section. A spectrometer is constructed that can temporally and spectrally characterize the entangled photon state.
arXiv Detail & Related papers (2022-02-23T20:14:11Z)
Observation-dependent suppression and enhancement of two-photon coincidences by tailored losses [68.8204255655161]
Hong-Ou-Mandel (HOM) effect can lead to a perfect suppression of two-particle coincidences between the output ports of a balanced beam splitter. In this work, we demonstrate experimentally that the two-particle coincidence statistics of two bosons can instead be seamlessly tuned to substantial enhancement. Our findings reveal a new approach to harnessing non-Hermitian settings for the manipulation of multi-particle quantum states.
arXiv Detail & Related papers (2021-05-12T06:47:35Z)
Investigating the coherent state detection probability of InGaAs/InP SPAD-based single-photon detectors [55.41644538483948]
We investigate the probabilities of detecting single- and multi-photon coherent states on InGaAs/InP sine-gated and free-run avalanche diodes. We conclude that multi-photon state detection cannot be regarded as independent events of absorption of individual single-photon states.
arXiv Detail & Related papers (2021-04-16T08:08:48Z)
Symmetry allows for distinguishability in totally destructive many-particle interference [52.77024349608834]
We investigate, in a four photon interference experiment in a laser-written waveguide structure, how symmetries control the suppression of many-body output events of a $J_x$ unitary. We show that totally destructive interference does not require mutual indistinguishability between all, but only between symmetrically paired particles.
arXiv Detail & Related papers (2021-02-19T16:37:19Z)
Auto-heterodyne characterization of narrow-band photon pairs [68.8204255655161]
We describe a technique to measure photon pair joint spectra by detecting the time-correlation beat note when non-degenerate photon pairs interfere at a beamsplitter. The technique is well suited to characterize pairs of photons, each of which can interact with a single atomic species.
arXiv Detail & Related papers (2021-01-08T18:21:30Z)
Light-matter interactions near photonic Weyl points [68.8204255655161]
Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point. We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
arXiv Detail & Related papers (2020-12-23T18:51:13Z)
Entanglement dynamics in dissipative photonic Mott insulators [62.997667081978825]
In spite of particle losses the quantum entanglement propagation exhibits a ballistic character with propagation speeds related to the differerent quasiparticles that are involved in the dynamics. Our analysis reveals that photon dissipation has a strikingly asymmetric behavior in the two configurations with a much more dramatic role on the holon entanglement propagation than for the doublon case.
arXiv Detail & Related papers (2020-04-27T15:48:24Z)

This list is automatically generated from the titles and abstracts of the papers in this site.