Related papers: Detecting Entanglement Between Modes of Light

Detecting Entanglement Between Modes of Light

URL: http://arxiv.org/abs/2201.06249v2
Date: Thu, 27 Jan 2022 05:13:44 GMT
Title: Detecting Entanglement Between Modes of Light
Authors: Madhura Ghosh Dastidar, Gniewomir Sarbicki
Abstract summary: We consider a subgroup of unitary transformations on a mode of light induced by a Mach-Zehnder Interferometer. We show which local settings of the interferometers lead to a maximal violation of the CHSH inequality.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We consider a subgroup of unitary transformations on a mode of light induced by a Mach-Zehnder Interferometer and an algebra of observables describing a photon-number detector proceeded by an interferometer. We explore the uncertainty principles between such observables and their usefulness in performing a Bell-like experiment to show a violation of the CHSH inequality, under physical assumption that the detector distinguishes only zero from non-zero number of photons. We show which local settings of the interferometers lead to a maximal violation of the CHSH inequality.

Related papers

Quantum fluctuations in the small Fabry-Perot interferometer [77.34726150561087]
We study the small, of the size of the order of the wavelength, interferometer with the main mode excited by a quantum field from a nano-LED or a laser. We find the field and the photon number fluctuation spectra inside and outside the interferometer. Results help the study, design, manufacture, and use small elements of quantum optical integrated circuits.
arXiv Detail & Related papers (2022-12-27T10:02:25Z)
Entanglement of annihilation photons [141.5628276096321]
We present the results of a new experimental study of the quantum entanglement of photon pairs produced in positron-electron annihilation at rest. Despite numerous measurements, there is still no experimental proof of the entanglement of photons.
arXiv Detail & Related papers (2022-10-14T08:21:55Z)
Enhanced nonlinear interferometry via seeding [0.5760489824496111]
We analyse a nonlinear interferometer in the presence of internal losses and inefficient detectors. We derive analytical expressions for the interference visibility, contrast, phase sensitivity, and signal-to-noise ratio. Our results expand the nonlinear interferometry capabilities in the field of quantum imaging, metrology, and spectroscopy.
arXiv Detail & Related papers (2022-09-14T16:13:14Z)
Nonlinear quantum interferometric spectroscopy with entangled photon pairs [0.0]
We develop expressions for a time-resolved photon counting signal induced by an entangled photon pair in an interferometric spectroscopy setup. Superoperator expressions in Liouville-space are derived that can account for relaxation and dephasing induced by coupling to a bath.
arXiv Detail & Related papers (2022-01-26T19:00:18Z)
Photon number resolving detectors as evidence for the corpuscular nature of light [0.0]
We consider whether photon-number-resolving (PNR) detectors provide compelling evidence for the discrete nature of light. We propose an alternative interpretation for the analysis of PNR detector output that is consistent with a wave picture of light. We find that results from low SNR PNR detectors are able to be described by classical descriptions.
arXiv Detail & Related papers (2021-10-08T16:52:52Z)
Mirror-assisted backscattering interferometry to measure the first-order correlation function of the light emitted by quantum scatterers [0.0]
We present a new method to obtain the first-order temporal correlation function, $g(1) (tau)$, of the light scattered by an assembly of point-like quantum scatterers. This new method has direct application to obtain the saturated spectrum of quantum systems.
arXiv Detail & Related papers (2021-08-03T12:34:41Z)
Quantum asymmetry and noisy multi-mode interferometry [55.41644538483948]
Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator. We show that the asymmetry may emphincrease as a result of a emphdecrease of coherence inside a degenerate subspace.
arXiv Detail & Related papers (2021-07-23T07:30:57Z)
Towards probing for hypercomplex quantum mechanics in a waveguide interferometer [55.41644538483948]
We experimentally investigate the suitability of a multi-path waveguide interferometer with mechanical shutters for performing a test for hypercomplex quantum mechanics. We systematically analyse the influence of experimental imperfections that could lead to a false-positive test result.
arXiv Detail & Related papers (2021-04-23T13:20:07Z)
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)

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