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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Journal ArticleDOI
Computer-Inspired Concept for High-Dimensional Multipartite Quantum Gates.
Xiaoqin Gao,Xiaoqin Gao,Xiaoqin Gao,Manuel Erhard,Manuel Erhard,Anton Zeilinger,Anton Zeilinger,Mario Krenn +7 more
TL;DR: Concepts for transformations of high-dimensional multiphotonic quantum systems are presented using the computer algorithm melvin for designing computer-inspired quantum experiments and demonstrate that computer algorithms can inspire new ideas in science.
Journal ArticleDOI
Flexible resources for quantum metrology
Nicolai Friis,Nicolai Friis,Davide Orsucci,Michalis Skotiniotis,Michalis Skotiniotis,Pavel Sekatski,Vedran Dunjko,Hans J. Briegel,Hans J. Briegel,Wolfgang Dür +9 more
TL;DR: In this article, the authors show that 2D cluster states (a particular family of states useful for measurement-based quantum computation) can serve as flexible resources that allow one to efficiently prepare any required state for sensing, and perform appropriate entangled measurements using only single qubit operations.
Journal ArticleDOI
Generation of non-classical states of light and their application in deterministic quantum teleportation
TL;DR: The quantum teleportation distance was recently extended to the order of kilometers, which paves the way for constructing a practical quantum information network as discussed by the authors, which is the foundation of quantum computation and quantum communication networks.
Journal ArticleDOI
Universal quantum computation on the power of quantum non-demolition measurements
TL;DR: In this paper, the authors investigate the linear and nonlinear models of optical quantum computation and discuss their scalability and efficiency, and show how there are significantly different scaling properties in single photon computation when weak cross-Kerr nonlinearities are allowed to supplement the usual linear optical set.
Journal ArticleDOI
Rydberg Atom Entanglements in the Weak Coupling Regime.
TL;DR: This scheme realizes not only controlled phase operations between atoms at a distance larger than Rydberg blockade distance, but also various counterintuitive entanglement examples, including two-atom entanglements in the presence of a closer third atom and W-state generation for three partially blockaded atoms.
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.