Tag Archives: Photonics

Unpolarized Light Could Separate Chiral Molecules

Posted on May 4, 2022 by rberkowitz

Numerical simulations suggest that unpolarized light with a twisted phase could help sort left- and right-handed molecules into separate ring-shaped traps. Continue reading →

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Quantum Metasurfaces Entangle Photons on Demand

Posted on July 21, 2021 by rberkowitz

When it’s modulated by laser beams, a surface made of polarizable meta-atoms can entangle a photon’s properties in multiple, controllable ways. Continue reading →

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Optical Fiber Modes Resist Deformations

Posted on June 21, 2021 by rberkowitz

A machine-learning approach quickly characterizes an optical fiber, identifying transmission channels that aren’t affected by deformation. Continue reading →

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An Optical System Defies Conventional Band Theory

Posted on June 11, 2021 by rberkowitz

Squeezed wave functions reshape an open quantum system’s
bulk-boundary properties and generate a new class of parity-time
symmetry. Continue reading →

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Light Pulses Change Speed in a Plasma

Posted on May 24, 2021 by rberkowitz

Interactions between two laser beams in a plasma allow for precise
control over the light’s velocity. Continue reading →

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Ultrabright Photons for Single-Chip Quantum Devices

Posted on January 1, 2021 by rberkowitz

A microcavity-based source of photon pairs achieves one hundred times the efficiency of state-of-the-art devices. Read more in APS Physics…

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Pulses of Light Accelerate in Free Space

Posted on December 6, 2020 by rberkowitz

A recipe for greatly accelerating a light pulse involves sculpting its
spectrum in space and time. Continue reading →

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Toward a Perfect Single-Photon Source

Posted on October 15, 2020 by rberkowitz

Semiconductor quantum dot emits photons that are squeezed below the fundamental noise limit. Continue reading →

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An Electrical Trigger Fires Single, Identical Photons

Posted on October 8, 2020 by rberkowitz

The precisely controlled photon source, made from an atomically thin semiconducting material, could aid the development of advanced quantum communication. Read more at Berkeley Lab…

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Coldest Electrons Ever from Photocathodes

Posted on August 6, 2020 by rberkowitz

Researchers have generated the coldest electrons to date from solid-state photocathodes, an achievement that could improve electron sources for particle accelerators and ultrafast electron microscopy applications.  Continue reading →

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