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"Quantum computers Fiction."
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The new novel by Canada's top Science Fiction writer. In 2059 two very different groups have their minds uploaded into a quantum computer in Waterloo, Ontario. One group consists of astronauts preparing for Earth's first interstellar voyage. The other? Convicted murderers, serving their sentences in a virtual-reality prison. But when disaster strikes, the astronauts and the prisoners must download back into physical reality and find a way to work together to save Earth from destruction.
Book
Did physicists create a wormhole in a quantum computer?
An unusual teleportation experiment uses ordinary quantum physics, but was inspired by tunnels in an exotic ‘toy universe’.
An unusual teleportation experiment uses ordinary quantum physics, but was inspired by tunnels in an exotic ‘toy universe’.
Journal Article
Degree Distribution in Quantum Walks on Complex Networks
In this theoretical study, we analyze quantum walks on complex networks, which model network-based processes ranging from quantum computing to biology and even sociology. Specifically, we analytically relate the average long-time probability distribution for the location of a unitary quantum walker to that of a corresponding classical walker. The distribution of the classical walker is proportional to the distribution of degrees, which measures the connectivity of the network nodes and underlies many methods for analyzing classical networks, including website ranking. The quantum distribution becomes exactly equal to the classical distribution when the walk has zero energy, and at higher energies, the difference, the so-called quantumness, is bounded by the energy of the initial state. We give an example for which the quantumness equals a Rényi entropy of the normalized weighted degrees, guiding us to regimes for which the classical degree-dependent result is recovered and others for which quantum effects dominate.
Journal Article
Will recent advances in AI result in a paradigm shift in Astrobiology and SETI?
The steady advances in computer performance and in programming raise the concern that the ability of computers would overtake that of the human brain, an occurrence termed ‘the Singularity’. While comparing the size of the human brain and the advance in computer capacity, the Singularity has been estimated to occur within a few decades although the capacity of conventional computers may reach its limits in the near future. However, in the last few years, there have been rapid advances in artificial intelligence. There are already programs that carry out pattern recognition and self-learning which, at least in limited fields such as chess and other games, are superior to the best human players. Furthermore, the quantum computing revolution, which is expected to vastly increase computer capacities, is already on our doorstep. It now seems inevitable that the Singularity will arrive within the foreseeable future. Biological life, on Earth and on extraterrestrial planets and their satellites, may continue as before, but humanity could be ‘replaced’ by computers. Older and more advanced intelligent life forms, possibly evolved elsewhere in the Universe, may have passed their Singularity a long time ago. Post Singularity life would probably be based not on biochemical reactions but on electronics. Their communication may use effects such as quantum entanglement and be undetectable to us. This may explain the Fermi paradox or at least the ‘Big Silence’ problem in SETI.
Journal Article
How a quantum computer actually works
IBM’s System One is a quantum computer with its guts exposed, looking like a golden sci-fi chandelier. Everything else you can see is there to keep that chip cold, because the magic of the quantum machine, the qubits, will only work if they’re almost absolute zero, colder than outer space. Every single layer of this chandelier, as we call it, can interact with the individual qubits on the chip.
Trade Publication Article