Journal ArticleDOI
A one-way quantum computer.
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A scheme of quantum computation that consists entirely of one-qubit measurements on a particular class of entangled states, the cluster states, which are thus one-way quantum computers and the measurements form the program.Abstract:
We present a scheme of quantum computation that consists entirely of one-qubit measurements on a particular class of entangled states, the cluster states. The measurements are used to imprint a quantum logic circuit on the state, thereby destroying its entanglement at the same time. Cluster states are thus one-way quantum computers and the measurements form the program.read more
Citations
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Qubit entanglement between ring-resonator photon-pair sources on a silicon chip
Joshua W. Silverstone,Raffaele Santagati,Damien Bonneau,Michael J. Strain,Marc Sorel,Jeremy L. O'Brien,Mark G. Thompson +6 more
TL;DR: A silicon photonic chip that uses resonant-enhanced photon-pair sources, spectral demultiplexers and reconfigurable optics to generate a path-entangled two-qubit state and analyse its entanglement and shows that ring-resonator-based spontaneous four-wave mixing photon- Pair sources can be made highly indistinguishable and their spectral correlations are small.
Journal Article
High-speed linear optics quantum computing via active feed-forward
Robert Prevedel,Philip Walther,F. Tiefenbacher,Pascal Boehi,Rainer Kaltenbaek,Thomas Jennewein,Anton Zeilinger +6 more
TL;DR: In this article, a concatenated scheme of measurement and active feed-forward in a one-way quantum computing experiment is presented, and the authors demonstrate that, for a perfect cluster state and no photon loss, their quantum computation scheme would operate with good fidelity and that their feedforward components function with very high speed and low error for detected photons.
Journal ArticleDOI
Quantum Error Correction for Beginners
TL;DR: In this article, the basic aspects of quantum error correction and fault-tolerant quantum computation are summarized, but not as a detailed guide, but rather as a basic introduction.
Journal ArticleDOI
Deterministic generation of a two-dimensional cluster state
TL;DR: In this paper, a scalable scheme for the generation of photonic cluster states suitable for universal measurement-based quantum computation is proposed and demonstrated, which exploits temporal multiplexing of squeezed light modes, delay loops, and beam-splitter transformations to deterministically generate a cylindrical cluster state with a 2D topological structure.
Journal ArticleDOI
Nonlinear and quantum optics with whispering gallery resonators
TL;DR: Optical Whispering Gallery Modes (WGMs) derive their name from a famous acoustic phenomenon of guiding a wave by a curved boundary observed nearly a century ago as mentioned in this paper, which enables resonators of unique properties attractive both in science and engineering.
References
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Journal ArticleDOI
Elementary gates for quantum computation.
Adriano Barenco,Charles H. Bennett,Richard Cleve,David P. DiVincenzo,Norman Margolus,Peter W. Shor,Tycho Sleator,John A. Smolin,Harald Weinfurter +8 more
TL;DR: U(2) gates are derived, which derive upper and lower bounds on the exact number of elementary gates required to build up a variety of two- and three-bit quantum gates, the asymptotic number required for n-bit Deutsch-Toffoli gates, and make some observations about the number of unitary operations on arbitrarily many bits.
Journal ArticleDOI
Quantum information and computation
TL;DR: In information processing, as in physics, the classical world view provides an incomplete approximation to an underlying quantum reality that can be harnessed to break codes, create unbreakable codes, and speed up otherwise intractable computations.
Journal ArticleDOI
Good quantum error-correcting codes exist
A. R. Calderbank,Peter W. Shor +1 more
TL;DR: The techniques investigated in this paper can be extended so as to reduce the accuracy required for factorization of numbers large enough to be difficult on conventional computers appears to be closer to one part in billions.
Journal ArticleDOI
Error Correcting Codes in Quantum Theory.
TL;DR: It is shown that a pair of states which are, in a certain sense, “macroscopically different,” can form a superposition in which the interference phase between the two parts is measurable, providing a highly stabilized “Schrodinger cat” state.
Journal ArticleDOI
Demonstrating the viability of universal quantum computation using teleportation and single-qubit operations
TL;DR: It is shown that single quantum bit operations, Bell-basis measurements and certain entangled quantum states such as Greenberger–Horne–Zeilinger (GHZ) states are sufficient to construct a universal quantum computer.