Quantum

Highlights

(Photo credit: Volker Lannert/University of Bonn)
Researchers at the University of Bonn’s Institute of Applied Physics—shown here (from left) Niels Wolf, Prof. Dr. Martin Weitz, Andreas Redmann, Dr. Frank Vewinger, and Dr. Julian Schmitt—have designed an approach that generates complex states of light.
Optics

‘Super photon’ enables tap-proof communications

Jan. 23, 2025
A new ability to generate complex states of light could hold the key to significantly more secure communications.
(Image credit: Francesco Tani)
This schematic shows the differences between classical optics vs. quantum optics for the team’s work.
Quantum

Bright squeezed vacuum pulses generate high harmonics

Dec. 20, 2024
Using a bright squeezed vacuum to generate high harmonics enhances their yields—compared to classical coherent light—and provides a route to probe material properties beyond the...
(Image credit: K. Arjas et al., Nat. Commun., 15, 9544 [2024]; https://doi.org/10.1038/s41467-024-53952-5)
Vortex laser pattern from 12-fold rotationally symmetric quasicrystal structure.
Quantum

Novel quasicrystal design further ‘green lights’ topological study of light

Dec. 16, 2024
A new quasicrystal design process—that enabled a structure with a 12-fold rotational symmetry—may prove useful for many photonic applications beyond plasmonics.
(Image credit: Benjamin Yuen)
The “shape” (expected intensity distribution) of a single photon emitted by an atom on the surface of a silicon nanoparticle.
Quantum

Quantum electrodynamics theory unveils precise ‘shape’ of a single photon

Dec. 2, 2024
New theory developed by Angela Demetriadou and Benjamin Yuen at the University of Birmingham in the U.K. explains how light and matter interact at the quantum level—at last!
FIGURE 1. A misaligned lens inserted into a Bessel beam pre-aligned to an ASM.
Optics

Tabletop optical alignment: A nightmare for QED scientists (with a solution)

Nov. 27, 2024
Precision optical alignment is currently used for centering lenses within cells, but a call from a quantum computing company made us realize it would be more helpful to quantum...

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Quantum

eBook: A journey of quantum photonics

Dec. 10, 2024
Laser Focus World invites you to join us on a quantum journey as we share the work of researchers around the globe pushing quantum mechanics closer to real-world applications ...
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(Photo credit: Quanscient)
Executive Forum

Build the future of quantum computing with Quanscient

June 21, 2024
Juha Riippi, CEO of Quanscient, shares his professional journey, the importance of a talented team, and the possibilities ahead in multiphysics quantum computing.
(Photo credit: LightSolver)
Lasers & Sources

LightSolver rolls out quantum-inspired LPU100

May 31, 2024
Ruti Ben-Shlomi, CEO and cofounder of LightSolver, a startup that developed a quantum-inspired laser-based processing unit, talks to us about their disruptive computing paradigm...
(Photo credit: Besim Mazhiqi, PHoQS, Paderborn University)
Test & Measurement

New tool determines characteristics of light-based quantum states

May 6, 2024
Researchers develop a technique to measure the quantum mechanical properties of electromagnetic fields at the single-photon level.
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Quantum

Quantum Research & Innovation: Welcome!

April 16, 2024
I’m thrilled to welcome you to the first issue of Quantum Research & Innovation!