Open AccessJournal Article
Quantum computers
TLDR
The author describes how such a quantum computer-a computer based on the rules of quantum mechanics-may work, and how it is going to give incredible speed and problem-solving power.Abstract:
Using atoms as digital bits will start a completely new era in computer design. Atoms cannot be simply manipulated and used like the bits built with transistors. The behavior of matter on the atomic scale follows the rules of modern physics. This behavior cannot be understood in terms of our classical description of the world (i. e. Newtonian mechanics or Maxwell's equations in electromagnetics). The physical theory dealing with such behavior is called quantum mechanics. Its use in the computer industry will most probably cause a revolution in the way we use and understand computers. The author describes how such a quantum computer-a computer based on the rules of quantum mechanics-may work, and how it is going to give incredible speed and problem-solving power.read more
Citations
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Journal ArticleDOI
Probing many-body dynamics on a 51-atom quantum simulator.
Hannes Bernien,Sylvain Schwartz,Sylvain Schwartz,Alexander Keesling,Harry Levine,Ahmed Omran,Hannes Pichler,Soonwon Choi,Alexander S. Zibrov,Manuel Endres,Markus Greiner,Vladan Vuletic,Mikhail D. Lukin +12 more
TL;DR: This work demonstrates a method for creating controlled many-body quantum matter that combines deterministically prepared, reconfigurable arrays of individually trapped cold atoms with strong, coherent interactions enabled by excitation to Rydberg states, and realizes a programmable Ising-type quantum spin model with tunable interactions and system sizes of up to 51 qubits.
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Heralded entanglement between solid-state qubits separated by three metres
Hannes Bernien,Bas Hensen,Wolfgang Pfaff,Gerwin Koolstra,Machiel Blok,L. Robledo,Tim H. Taminiau,Matthew Markham,Daniel J. Twitchen,Lilian Childress,Ronald Hanson +10 more
TL;DR: Long-distance entanglement of two electron spin qubits in diamond with a spatial separation of three metres is established using a robust protocol based on creation of spin–photonEntanglement at each location and a subsequent joint measurement of the photons.
Journal ArticleDOI
Electric-field sensing using single diamond spins
Florian Dolde,Helmut Fedder,Marcus W. Doherty,Tobias Nöbauer,F. Rempp,Gopalakrishnan Balasubramanian,Thomas Wolf,Friedemann Reinhard,Lloyd C. L. Hollenberg,Fedor Jelezko,Joerg Wrachtrup +10 more
TL;DR: In this paper, point defects in diamond known as nitrogen-vacancy centres have been shown to be sensitive to minute magnetic fields, even at room temperature, and a demonstration that the spin associated with these defect centres is also sensitive to electric fields holds out the prospect of a sensor that can resolve single spins and single elementary charges at the nanoscale.
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Superconducting nanowire single-photon detectors: physics and applications
TL;DR: In this article, a review of the evolution of single-photon detectors based on superconducting nanowires (SSPDs) is presented, and a detailed snapshot of an emerging superconducted detector technology on the threshold of maturity is presented.
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An open-system quantum simulator with trapped ions
Julio T. Barreiro,Markus Müller,Philipp Schindler,Daniel Nigg,Thomas Monz,M. Chwalla,M. Chwalla,Markus Hennrich,Christian F. Roos,Christian F. Roos,Peter Zoller,Rainer Blatt,Rainer Blatt +12 more
TL;DR: This work combines multi-qubit gates with optical pumping to implement coherent operations and dissipative processes and illustrates the ability to engineer the open-system dynamics through the dissipative preparation of entangled states, the simulation of coherent many-body spin interactions, and the quantum non-demolition measurement of multi- qubit observables.
References
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Quantum theory, the Church-Turing principle and the universal quantum computer
TL;DR: In this paper, it is argued that underlying the Church-Turing hypothesis there is an implicit physical assertion: every finitely realizable physical system can be perfectly simulated by a universal model computing machine operating by finite means.
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The Feynman Lectures on Physics; Vol. I
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Quantum Computing: Pro and Con
TL;DR: The potential of quantum computation is assessed, some of the known quantum algorithms and the prospects for finding new ones are reviewed, and the specifications that should be met by future hardware are commented on.
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The topsy turvy world of quantum computing
TL;DR: The principles of quantum computing including quantum information, algorithms, entanglement and error correction are described, which are no longer seen as weird curiosities but as the powerful future of the computer industry.