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Meadowlark Optics - Wave Plates 6/24 LB 2024

Scattered Photons Transfer Quantum Coherence in Free Space

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Researchers at the University of Waterloo report the first successful transfer and recovery of quantum coherence using photons scattered in free space. The work points toward research opportunities and applications in fields ranging from quantum communication to imaging and beyond. Quantum coherence, while fundamental to applications of quantum technology, has been difficult to transfer in free space. It has so far been limited to direct line-of-sight channels as quality degrades severely with atmospheric turbulence and scattering. “The ability to transfer quantum coherence...Read full article

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    Published: June 2021
    Glossary
    quantum
    The term quantum refers to the fundamental unit or discrete amount of a physical quantity involved in interactions at the atomic and subatomic scales. It originates from quantum theory, a branch of physics that emerged in the early 20th century to explain phenomena observed on very small scales, where classical physics fails to provide accurate explanations. In the context of quantum theory, several key concepts are associated with the term quantum: Quantum mechanics: This is the branch of...
    photodetector
    A photodetector, also known as a photosensor or photodiode, is a device that detects and converts light into an electrical signal. Photodetectors are widely used in various applications, ranging from simple light sensing to more complex tasks such as imaging and communication. Key features and principles of photodetectors include: Light sensing: The primary function of a photodetector is to sense or detect light. When photons (particles of light) strike the active area of the photodetector,...
    phase
    In optics and photonics, "phase" refers to a property of electromagnetic waves, such as light, that describes the position of a wave at a given point in time within its oscillation cycle. More specifically, it indicates the position of a wave relative to a reference point, typically the starting point of a cycle. When discussing phase in optics, it's often described in terms of the phase difference between two waves or the phase of a single wave. The phase difference between two waves is the...
    Research & Technologyquantumquantum coherenceSensors & Detectorsphotodetectorsingle-photonsingle-photon countingsingle-photon detectorLasersUniversity of WaterlooShihan SajeedThomas JenneweincoherencephaseTech Pulse

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