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Quantum Communications
Quantum Communications news and technical articles from Laser Focus World. Search Quantum Communications latest and archived news and articles
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QUANTUM COMMUNICATIONS : Single-photon exchange advances Earth-to-space quantum link
A quantum communications link in space is one step closer ..... is the basis for ultrasecure quantum communications , experiments in quantum mechanics ..... feasibility of space-to-Earth quantum communications with existing technology,” said …
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Aiming for practical quantum communications , physicists entangle photons and solid-state materials
Cambridge, MA --A team of Harvard physicists has entangled photons and solid-state materials, showing how solid-state quantum bits, or "qubits," can communicate with one another over long distances.
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Quantum entanglement discovery promises to smooth the way to quantum communications
June 22, 2009 --A team led by researchers at The Australian National University (ANU; Canberra, Australia) report development of a breakthrough approach to generating quantum entanglement, wherein information is coded in the physical relationship between two objects. The discovery, which has ...
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Phase-encoded photons enable secret Sagnac communications
Though significant progress has been made in quantum communications using polarization-entangled photons (see ..... optical communications. Similar problems apply to quantum communications using Sagnac-interferometer-based systems …
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QUANTUM COMPUTING: Atomic storage of photons may hold key to quantum cryptography
… have demonstrated elementary operations for quantum communications . The Georgia Tech researchers observed that ..... essential operations for eventual construction of a quantum - communications network, rendered ultrasecure by a quantum …
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Physicists take first step for quantum networking
… team of physicists at the Georgia Institute of Technology has taken a significant step toward the development of quantum communications systems by successfully transferring quantum information from two different groups of atoms onto a single photon …
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CLEO 2008: An Earth-to-Space quantum link? Session/interview
Laser Focus World editor Valerie Coffey interviews Professor Paolo Villoresi, University of Padua, Italy, at CLEO/QELS 2008 in San Jose, on his technical paper and research on a quantum communications link from Earth to space, detecting single photons from a low-earth-orbit (LEO) satellite Ajisai ...
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AVALANCHE PHOTODIODES: Near-IR APDs expand photon-counting applications
A variety of new technologies provide efficient single-photon detection in near-IR wavelengths, enabling new applications in trace-gas analysis, photodynamic therapy, and quantum communications .
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Single-photon exchange advances Earth-to-space quantum link
May 30, 2008--A quantum communications link in space is one step ..... basis for ultra-secure quantum communications , experiments in quantum ..... feasibility of space-to-Earth quantum communications with existing technology …
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NIST researchers create "quantum cats" from photons
… contribute to quantum computing--which may someday solve some problems that are intractable today--and quantum communications , the most secure method known for protecting the privacy of a communications channel. Larger quantum cats of …
