Related papers: Quantum non-Gaussian Photon Coincidences

Quantum non-Gaussian Photon Coincidences

URL: http://arxiv.org/abs/2009.04184v2
Date: Mon, 1 Mar 2021 16:03:03 GMT
Title: Quantum non-Gaussian Photon Coincidences
Authors: Luk\'a\v{s} Lachman and Radim Filip
Abstract summary: We derive criteria for quantum non-Gaussian two-photon coincidences that certify a new quality of photon sources. We analyse the robustness of the quantum non-Gaussian coincidences and compare with the heralded quantum non-Gaussianity of single-photons based on them.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Photon coincidences represent an important resource for quantum technologies. They expose nonlinear quantum processes in matter and are essential for sources of entanglement. We derive broadly applicable criteria for quantum non-Gaussian two-photon coincidences that certify a new quality of photon sources. The criteria reject states emerging from Gaussian parametric processes, which often limit applications in quantum technologies. We also analyse the robustness of the quantum non-Gaussian coincidences and compare with the heralded quantum non-Gaussianity of single-photons based on them.

Related papers

Entanglement of photonic modes from a continuously driven two-level system [34.50067763557076]
We experimentally generate entangled photonic modes by continuously exciting a quantum emitter, a superconducting qubit, with a coherent drive. We show that entanglement is generated between modes extracted from the two sidebands of the resonance fluorescence spectrum. Our approach can be utilized to distribute entanglement at a high rate in various physical platforms.
arXiv Detail & Related papers (2024-07-10T18:48:41Z)
On-chip quantum interference between independent lithium niobate-on-insulator photon-pair sources [35.310629519009204]
A lithium niobate-on-insulator (LNOI) integrated photonic circuit generates a two-photon path-entangled state, and a programmable interferometer for quantum interference. We generate entangled photons with $sim2.3times108$ pairs/s/mW brightness and perform quantum interference experiments on the chip with $96.8pm3.6%$ visibility. Our results provide a path towards large-scale integrated quantum photonics including efficient photon-pair generation and programmable circuits for applications such as boson sampling and quantum communications.
arXiv Detail & Related papers (2024-04-12T10:24:43Z)
Power Characterization of Noisy Quantum Kernels [52.47151453259434]
We show that noise may make quantum kernel methods to only have poor prediction capability, even when the generalization error is small. We provide a crucial warning to employ noisy quantum kernel methods for quantum computation.
arXiv Detail & Related papers (2024-01-31T01:02:16Z)
Experimental quantum non-Gaussian coincidences of entangled photons [6.108449124807509]
We conclusively test quantum non-Gaussian coincidences of entangled photon pairs with the CHSH-Bell factor. Our work experimentally certifies the exclusive quantum non-Gaussianity properties highly relevant for optical sensing, communication and computation.
arXiv Detail & Related papers (2023-07-10T12:57:24Z)
Quantum non-Gaussianity of light and atoms [0.0]
Quantum non-Gaussian states of photons and phonons are conclusive witnesses of higher-than-quadratic nonlinearities in optical and mechanical processes. This review introduces theoretical analyses of nonclassical and quantum non-Gaussian states of photons and phonons.
arXiv Detail & Related papers (2022-06-05T19:48:41Z)
Theory of Quantum Generative Learning Models with Maximum Mean Discrepancy [67.02951777522547]
We study learnability of quantum circuit Born machines (QCBMs) and quantum generative adversarial networks (QGANs) We first analyze the generalization ability of QCBMs and identify their superiorities when the quantum devices can directly access the target distribution. Next, we prove how the generalization error bound of QGANs depends on the employed Ansatz, the number of qudits, and input states.
arXiv Detail & Related papers (2022-05-10T08:05:59Z)
Efficient criteria of quantumness for a large system of qubits [58.720142291102135]
We discuss the dimensionless combinations of basic parameters of large, partially quantum coherent systems. Based on analytical and numerical calculations, we suggest one such number for a system of qubits undergoing adiabatic evolution.
arXiv Detail & Related papers (2021-08-30T23:50:05Z)
Quantum non-Gaussianity criteria based on vacuum probabilities of original and attenuated state [0.0]
Quantum non-Gaussian states represent an important class of highly non-classical states. We derive criteria for certification of quantum non-Gaussianity based on probability of vacuum in the original quantum state.
arXiv Detail & Related papers (2021-07-20T09:56:04Z)
Observations of on-demand quantum correlation using Poisson-distributed photon pairs [12.507208769851653]
We experimentally demonstrate the secrete of quantumness using the wave nature of single photons. No clear answer exists for what quantum entanglement should be and how to generate it.
arXiv Detail & Related papers (2020-12-16T02:13:06Z)
Quantum Correlations beyond Entanglement and Discord [0.0]
We experimentally realize a form of quantum correlation that exists even in the absence of entanglement and discord. We implement a robust kind of nonclassical photon-photon correlated state with useful applications in quantum information processing.
arXiv Detail & Related papers (2020-10-07T15:52:20Z)
Quantum Random Number Generation using a Solid-State Single-Photon Source [89.24951036534168]
Quantum random number generation (QRNG) harnesses the intrinsic randomness of quantum mechanical phenomena. We demonstrate QRNG with a quantum emitter in hexagonal boron nitride. Our results open a new avenue to the fabrication of on-chip deterministic random number generators.
arXiv Detail & Related papers (2020-01-28T22:47:43Z)

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