Efficient compressive and Bayesian characterization of biphoton frequency spectra

• URL: http://arxiv.org/abs/2003.04391v1
• Date: Mon, 9 Mar 2020 20:12:04 GMT
• Title: Efficient compressive and Bayesian characterization of biphoton frequency spectra
• Abstract summary: We introduce and compare compressive sensing and Bayesian mean estimation for recovering the spectral correlations of entangled photon pairs. We reconstruct joint spectra with up to a 26-fold reduction in measurement time compared to the equivalent scan.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Frequency-bin qudits constitute a promising tool for quantum information processing, but their high dimensionality can make for tedious characterization measurements. Here we introduce and compare compressive sensing and Bayesian mean estimation for recovering the spectral correlations of entangled photon pairs. Using a conventional compressive sensing algorithm, we reconstruct joint spectra with up to a 26-fold reduction in measurement time compared to the equivalent raster scan. Applying a custom Bayesian model to the same data, we then additionally realize reliable and consistent quantification of uncertainty. These efficient methods of biphoton characterization should advance our ability to use the high degree of parallelism and complexity afforded by frequency-bin encoding.

Related papers

• Efficient imaging of quantum emitters using compressive sensing [36.39787379495167]
  We demonstrate a sensing-based imaging approach, where spatially structured wide-field excitation replaces scanning, enabling reconstruction of sparse emitters.<n>In addition to intensity reconstruction, we extend this framework to reconstruct spatial maps of the second-order correlation function $g(2)$ from measurements.<n>This enables identification of single-photon emitters through antibunching signatures using significantly reduced data.
  arXiv  Detail & Related papers  (2026-04-12T05:13:44Z)
• Gaussian mode coupling of spectrally broadband photons from bulk spontaneous parametric down-conversion: A spatial-spectral mode analysis of fiber coupling [0.0]
  Photon sources based on spontaneous parametric down-conversion are central to experimental quantum optics and quantum technologies.<n>We show how spectral-spatial non-separability impacts collection probability, heralding efficiency, and purity in SPDC emission.<n>This framework provides a quantitative and predictive framework for understanding and engineering bulk-crystal photon sources.
  arXiv  Detail & Related papers  (2026-02-26T17:13:11Z)
• Zero-added-loss entanglement multiplexing using time-bin spectral shearing [1.685485565763117]
  We propose a scheme for heralded-multiplexed generation of quasi-deterministic entangled photon pairs, called zero-added-loss multiplexing (ZALM)<n>We experimentally verify the compatibility of time-bin pulses and spectral shearing, as supported by observation of no phase shift when the same shearing is applied to both time bins.
  arXiv  Detail & Related papers  (2025-12-19T00:53:29Z)
• Spectral truncation of out-of-time-ordered correlators in dissipative system [44.99833362998488]
  Out-of-time-ordered correlators (OTOCs) have emerged as powerful tools for diagnosing quantum chaos and information scrambling. We investigate the spectral decomposition of OTOCs in open quantum systems using the dissipative modified kicked rotator (DMKR) as a paradigmatic model. Our results provide a quantitative framework for understanding OTOCs in dissipative quantum systems and suggest new avenues for experimental exploration in open quantum platforms.
  arXiv  Detail & Related papers  (2025-03-05T17:22:25Z)
• Estimation of the frequency-shift between two photons by time-sampling measurements [0.0]
  We present a sensing scheme for estimating the frequency difference of two non-entangled photons. We show that, already with $sim 1000$ sampling measurements, the Cram'er-Rao bound is saturated independently of the value of the difference in frequency.
  arXiv  Detail & Related papers  (2024-12-20T19:35:17Z)
• Classification of quantum states of light using random measurements through a multimode fiber [42.5342379899288]
  We present an optical scheme based on sending unknown input states through a multimode fiber. A short multimode fiber implements effectively a random projection in the spatial domain. A long-dispersive multimode fiber performs a spatial and spectral projection.
  arXiv  Detail & Related papers  (2023-10-20T15:48:06Z)
• High-speed photon correlation monitoring of amplified quantum noise by chaos using deep-learning balanced homodyne detection [0.0]
  Precision experimental determination of photon correlation requires massive amounts of data and extensive measurement time. We present a technique to monitor second-order photon correlation $g(2)(0)$ of amplified quantum noise based on wideband balanced homodyne detection and deep-learning acceleration. The quantum noise is effectively amplified by an injection of weak chaotic laser and the $g(2)(0)$ of the amplified quantum noise is measured with a real-time sample rate of 1.4 GHz.
  arXiv  Detail & Related papers  (2023-07-06T09:11:25Z)
• Towards Accurate Post-training Quantization for Diffusion Models [73.19871905102545]
  We propose an accurate data-free post-training quantization framework of diffusion models (ADP-DM) for efficient image generation. Our method outperforms the state-of-the-art post-training quantization of diffusion model by a sizable margin with similar computational cost.
  arXiv  Detail & Related papers  (2023-05-30T04:00:35Z)
• 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)
• 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)
• Quantum-enhanced absorption spectroscopy with bright squeezed frequency combs [91.3755431537592]
  We propose a strategy combining the advantages of frequency modulation spectroscopy with the reduced noise properties accessible by squeezing the probe state. A homodyne detection scheme allows the simultaneous measurement of the absorption at multiple frequencies. We predict a significant enhancement of the signal-to-noise ratio that scales exponentially with the squeezing factor.
  arXiv  Detail & Related papers  (2022-09-30T17:57:05Z)
• Quantum Wiener-Khinchin theorem for spectral-domain optical coherence tomography [9.107095800991337]
  We use a quantum Wiener-Khinchin theorem (QWKT) to state that two-photon joint spectral intensity and the cross-correlation of two-photon temporal signal can be connected. The mathematically-defined QWKT is experimentally demonstrated in frequency-entangled two-photon Hong-Ou-Mandel interference with the assistance of spectrally-resolved detection.
  arXiv  Detail & Related papers  (2022-05-23T13:38:25Z)
• Two-Photon Interference of Single Photons from Dissimilar Sources [0.0]
  Entanglement swapping and heralding are at the heart of many protocols for distributed quantum information. We develop a theoretical description of pulsed two-photon interference of photons from dissimilar sources. We study their dependence on critical system parameters such as quantum state lifetime and frequency detuning.
  arXiv  Detail & Related papers  (2022-02-10T07:51:27Z)
• Parameter estimation of time and frequency shifts with generalized HOM interferometry [0.0]
  Hong-Ou-Mandel interferometry takes advantage of the quantum nature of two-photon interference to increase the resolution of precision measurements of time-delays. We analyze how the precision of Hong-Ou-Mandel interferometers can be significantly improved by engineering the spectral distribution of two-photon probe states.
  arXiv  Detail & Related papers  (2021-06-01T17:38:13Z)
• Regularization by Denoising Sub-sampled Newton Method for Spectral CT Multi-Material Decomposition [78.37855832568569]
  We propose to solve a model-based maximum-a-posterior problem to reconstruct multi-materials images with application to spectral CT. In particular, we propose to solve a regularized optimization problem based on a plug-in image-denoising function. We show numerical and experimental results for spectral CT materials decomposition.
  arXiv  Detail & Related papers  (2021-03-25T15:20:10Z)
• 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)
• Spectral characterization of photon-pair sources via classical sum-frequency generation [0.0]
  High-resolution spectral measurement is a key technique for engineering spectral properties of photons. We demonstrate spectral measurements and optimization of frequency-entangled photon pairs produced via spontaneous parametric downconversion (SPDC) A joint phase-matching spectrum of a nonlinear crystal around 1580 nm is captured with a 40 pm resolution and a > 40 dB signal-to-noise ratio.
  arXiv  Detail & Related papers  (2020-10-15T11:52:12Z)
• Spectrally reconfigurable quantum emitters enabled by optimized fast modulation [42.39394379814941]
  Spectral control in solid state platforms such as color centers, rare earth ions, and quantum dots is attractive for realizing such applications on-chip. We propose the use of frequency-modulated optical transitions for spectral engineering of single photon emission. Our results suggest that frequency modulation is a powerful technique for the generation of new light states with unprecedented control over the spectral and temporal properties of single photons.
  arXiv  Detail & Related papers  (2020-03-27T18:24:35Z)

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.