Twisted photons

G Molina-Terriza, JP Torres, L Torner - Nature physics, 2007‏ - nature.com
The orbital angular momentum of light represents a fundamentally new optical degree of
freedom. Unlike linear momentum, or spin angular momentum, which is associated with the …

Spatial correlations in parametric down-conversion

SP Walborn, CH Monken, S Pádua, PHS Ribeiro - Physics Reports, 2010‏ - Elsevier
The transverse spatial effects observed in photon pairs produced by parametric down-
conversion provide a robust and fertile testing ground for studies of quantum mechanics …

Spatially entangled photon pairs from lithium niobate nonlocal metasurfaces

J Zhang, J Ma, M Parry, M Cai, R Camacho-Morales… - Science …, 2022‏ - science.org
Metasurfaces consisting of nanoscale structures are underpinning new physical principles
for the creation and sha** of quantum states of light. Multiphoton states that are entangled …

Microscopy with undetected photons in the mid-infrared

I Kviatkovsky, HM Chrzanowski, EG Avery… - Science …, 2020‏ - science.org
Owing to its capacity for unique (bio)-chemical specificity, microscopy with mid–infrared (IR)
illumination holds tremendous promise for a wide range of biomedical and industrial …

Polarization entanglement-enabled quantum holography

H Defienne, B Ndagano, A Lyons, D Faccio - Nature Physics, 2021‏ - nature.com
Holography is a cornerstone characterization and imaging technique that can be applied to
the full electromagnetic spectrum, from X-rays to radio waves or even particles such as …

Imaging high-dimensional spatial entanglement with a camera

MP Edgar, DS Tasca, F Izdebski, RE Warburton… - Nature …, 2012‏ - nature.com
The light produced by parametric down-conversion shows strong spatial entanglement that
leads to violations of EPR criteria for separability. Historically, such studies have been …

Distinguishing modified gravity from dark energy

E Bertschinger, P Zukin - Physical Review D—Particles, Fields, Gravitation …, 2008‏ - APS
The acceleration of the Universe can be explained either through dark energy or through the
modification of gravity on large scales. In this paper we investigate modified gravity models …

Photon-sparse microscopy: visible light imaging using infrared illumination

RS Aspden, NR Gemmell, PA Morris, DS Tasca… - Optica, 2015‏ - opg.optica.org
Conventional imaging systems rely upon illumination light that is scattered or transmitted by
the object and subsequently imaged. Ghost-imaging systems based on parametric down …

Introduction to the transverse spatial correlations in spontaneous parametric down-conversion through the biphoton birth zone

J Schneeloch, JC Howell - Journal of Optics, 2016‏ - iopscience.iop.org
As a tutorial to the spatial aspects of spontaneous parametric downconversion (SPDC), we
present a detailed first-principles derivation of the transverse correlation width of photon …

Pixel super-resolution with spatially entangled photons

H Defienne, P Cameron, B Ndagano, A Lyons… - Nature …, 2022‏ - nature.com
Pixelation occurs in many imaging systems and limits the spatial resolution of the acquired
images. This effect is notably present in quantum imaging experiments with correlated …