Journal ArticleDOI
A one-way quantum computer.
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TLDR
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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Journal ArticleDOI
Integrated sources of photon quantum states based on nonlinear optics
Lucia Caspani,Chunle Xiong,Benjamin J. Eggleton,Daniele Bajoni,Marco Liscidini,Matteo Galli,Roberto Morandotti,David J. Moss +7 more
TL;DR: Recent advances in the realisation of integrated sources of photonic quantum states are reviewed, focusing on approaches based on nonlinear optics that are compatible with contemporary optical fibre telecommunications and quantum memory platforms as well as with chip-scale semiconductor technology.
Journal ArticleDOI
Novel Schemes for Measurement-Based Quantum Computation
David Gross,Jens Eisert +1 more
TL;DR: It is shown that there exist resource states which are locally arbitrarily close to a pure state, and comment on the possibility of tailoring computational models to specific physical systems.
Journal ArticleDOI
Entanglement purification and quantum error correction
Wolfgang Dür,Hans J. Briegel +1 more
TL;DR: A review on entanglement purification for bipartite and multipartite quantum states, with the main focus on the theoretical work carried out by our group in the last couple of years, is given in this paper.
Proceedings ArticleDOI
Photonic quantum technologies
Kanin Aungskunsiri,Damien Bonneau,Jacques Carolan,Daniel Fry,J. P. Hadden,S. Ho,Jake E. Kennard,Sebastian Knauer,Enrique Martin-Lopez,Jasmin D. A. Meinecke,Gabriel J. Mendoza,Jack Munns,Mateusz Piekarek,Konstantinos Poulios,Xiaogang Qiang,Nicholas Russell,Raffaele Santagati,Alberto Santamato,Peter Shadbolt,Philip Sibson,Joshua W. Silverstone,O. Snowdon,Nicola A. Tyler,Jianwei Wang,Callum M. Wilkes,S. R. Whittaker,Jorge Barreto,Daryl M. Beggs,Xinlun Cai,Pisu Jiang,Anthony Laing,Jonathan C. F. Matthews,Graham D. Marshall,Alberto Peruzzo,Xiao-Qi Zhou,J. G. Rarity,Mark G. Thompson,Jeremy L. O'Brien +37 more
TL;DR: In this article, an integrated waveguide approach to photonic quantum circuits for high performance, miniaturization and scalability is presented. But the authors do not address the challenges of scaling up quantum circuits using new insights into how controlled operations can be efficiently realized.
Posted Content
Categorical quantum mechanics
Samson Abramsky,Bob Coecke +1 more
TL;DR: This invited chapter in the Handbook of Quantum Logic and Quantum Structures consists of a substantially updated version of quant-ph/0402130 by the same authors, which initiated the area of categorical quantum mechanics, but had not yet been published in full length.
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.