Quantum optical coherence: From linear to nonlinear interferometers
- URL: http://arxiv.org/abs/2104.02641v2
- Date: Fri, 22 Oct 2021 07:45:26 GMT
- Title: Quantum optical coherence: From linear to nonlinear interferometers
- Authors: K.-H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A.
Ferreri, P. R. Sharapova, H. Herrmann, and C. Silberhorn
- Abstract summary: We introduce a classification scheme that characterizes any interferometer based on the number of involved nonlinear elements.
We show that our experimental design can be useful in gaining insight into the properties of the various interferometeric setups containing different degrees of nonlinearity.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Interferometers provide a highly sensitive means to investigate and exploit
the coherence properties of light in metrology applications. However,
interferometers come in various forms and exploit different properties of the
optical states within. In this paper, we introduce a classification scheme that
characterizes any interferometer based on the number of involved nonlinear
elements by studying their influence on single-photon and photon-pair states.
Several examples of specific interferometers from these more general classes
are discussed, and the theory describing the expected first-order and
second-order coherence measurements for single-photon and single-photon-pair
input states is summarized and compared. These theoretical predictions are then
tested in an innovative experimental setup that is easily able to switch
between implementing an interferometer consisting of only one or two nonlinear
elements. The resulting singles and coincidence rates are measured in both
configurations and the results are seen to fit well with the presented theory.
The measured results of coherence are tied back to the presented classification
scheme, revealing that our experimental design can be useful in gaining insight
into the properties of the various interferometeric setups containing different
degrees of nonlinearity.
Related papers
- Entanglement-induced collective many-body interference [62.22849132943891]
We propose an interferometric setting through which N-particle interference can be observed, while any interference of lower orders is strictly suppressed.
We experimentally demonstrate this effect in a four-photon interferometer, where the interference is nonlocal, in principle.
A joint detection of all four photons identifies a high-visibility interference pattern varying as a function of their collective four-particle phase, a genuine four-body property.
arXiv Detail & Related papers (2023-10-12T18:00:02Z) - Quantum Optical Induced-Coherence Tomography by a Hybrid Interferometer [5.3053404447552275]
This work demonstrates for the first time a hybrid-type induced-coherence interferometer that incorporates a Mach-Zehnder-type interferometer for visible photons and a Michelson-type interferometer for infrared photons.
The results verify that the induced-coherence interference visibility is approximately the same as the heralding efficiencies between twin photons along the relevant spatial modes.
arXiv Detail & Related papers (2023-09-13T07:54:31Z) - Order-invariant two-photon quantum correlations in PT-symmetric
interferometers [62.997667081978825]
Multiphoton correlations in linear photonic quantum networks are governed by matrix permanents.
We show that the overall multiphoton behavior of a network from its individual building blocks typically defies intuition.
Our results underline new ways in which quantum correlations may be preserved in counterintuitive ways even in small-scale non-Hermitian networks.
arXiv Detail & Related papers (2023-02-23T09:43:49Z) - 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) - Interference fringes in a nonlinear Michelson interferometer based on
spontaneous parametric down-conversion [5.0903384958409585]
Quantum nonlinear interferometers (QNIs) can measure the infrared physical quantities of a sample by detecting visible photons.
A QNI with Michelson geometry based on the spontaneous parametric down-conversion in a second-order nonlinear crystal is studied systematically.
arXiv Detail & Related papers (2021-09-16T02:12:54Z) - 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) - Hong-Ou-Mandel interferometry and spectroscopy using entangled photons [0.0]
We show how interferometric detection of nonlinear spectroscopic signals may be used to improve the measurement accuracy of matter susceptibilities.
Application is made to the Hong-Ou-Mandel two-photon interferometer that reveals entanglement-enhanced resolution.
arXiv Detail & Related papers (2021-03-03T13:59:16Z) - 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) - 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)
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.