Quantum computers, which use light particles (photons) instead of electrons to transmit and process data, hold the promise of a new era of research in which the time needed to realize lifesaving drugs and new technologies ...
Optics & Photonics
14 hours ago
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4
When you hear the word 'quantum," you may imagine physicists working on a new ground breaking theory. Or perhaps you've read about quantum computers and how they might change the world. But one lesser-known field is also ...
Quantum Physics
Jun 24, 2019
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In classical computing, debugging programs is one of the most time-consuming tasks in software development. Successful debugging relies on software development tools and also on the experience of the programmer. In quantum ...
Quantum Physics
Jun 21, 2019
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Researchers at the University of Chicago published a novel technique for improving the reliability of quantum computers by accessing higher energy levels than traditionally considered. Most prior work in quantum computation ...
Quantum Physics
Jun 21, 2019
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Physicists at the National Institute of Standards and Technology (NIST) have harnessed the phenomenon of "quantum squeezing" to amplify and measure trillionths-of-a-meter motions of a lone trapped magnesium ion (electrically ...
Quantum Physics
Jun 20, 2019
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A team at the University of Tsukuba studied a novel process for creating coherent lattice waves inside silicon crystals using ultrashort laser pulses. Using theoretical calculations combined with experimental results that ...
Quantum Physics
Jun 19, 2019
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Mikel Sanz, of the Physical Chemistry Department of UPV/EHU, leads the theoretical group for an experiment published by the prestigious journal, Nature Communications. The experiment has managed to prepare a remote quantum ...
Quantum Physics
Jun 19, 2019
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As mysterious as the Italian scientist for which it is named, the Majorana particle is one of the most compelling quests in physics.
Quantum Physics
Jun 13, 2019
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Quantum computers pose a big threat to the security of modern communications, deciphering cryptographic codes that would take regular computers forever to crack. But drawing on the properties of quantum behaviour could also ...
Quantum Physics
Jun 11, 2019
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177
A team of researchers with members affiliated with several institutions in the U.S. and Japan reports that connectivity is more important than thought when building specialized optimizing machines. In their paper published ...
A quantum computer is a device for computation that makes direct use of quantum mechanical phenomena, such as superposition and entanglement, to perform operations on data. The basic principle behind quantum computation is that quantum properties can be used to represent data and perform operations on these data.
Although quantum computing is still in its infancy, experiments have been carried out in which quantum computational operations were executed on a very small number of qubits (quantum binary digits). Both practical and theoretical research continues with interest, and many national government and military funding agencies support quantum computing research to develop quantum computers for both civilian and national security purposes, such as cryptanalysis.
If large-scale quantum computers can be built, they will be able to solve certain problems much faster than any of our current classical computers (for example Shor's algorithm). Quantum computers are different from other computers such as DNA computers and traditional computers based on transistors. Some computing architectures such as optical computers may use classical superposition of electromagnetic waves. Without some specifically quantum mechanical resources such as entanglement, it is conjectured that an exponential advantage over classical computers is not possible.
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