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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Quantum experiments and graphs. III. High-dimensional and multiparticle entanglement
TL;DR: In this paper, the authors exploit a connection between quantum experiments and graph theory and answer the question for a plethora of classes of entangled states, including Greenberger-Horne-Zeilinger states, W states, general Dicke states, and asymmetrically high-dimensional multipartite entangled states.
Journal ArticleDOI
Entanglement in eight-qubit graph states
TL;DR: In this paper, the Schmidt measure for the 8-partite split, and the Schmidt ranks for all bipartite splits were calculated for each 8-qubit graph state, which is an extension of the classification of graph states proposed by Hein, Eisert, and Briegel.
Journal ArticleDOI
Necessary and sufficient conditions for local manipulation of multipartite pure quantum states
Gilad Gour,Nolan R. Wallach +1 more
TL;DR: In this paper, the authors generalize the Nielsen majorization theorem to the multipartite case, and find necessary and sufficient conditions for the existence of a local separable transformation between two multipartitite states in the same stochastic LOCC class.
Journal ArticleDOI
Detecting itinerant microwave photons with engineered non-linear dissipation
Raphaël Lescanne,Samuel Deléglise,Emanuele Albertinale,Ulysse Reglade,Thibault Capelle,Edouard Ivanov,Thibaut Jacqmin,Zaki Leghtas,Emmanuel Flurin +8 more
TL;DR: In this article, a two-level system (qubit) and a microwave resonator were observed to share a common dissipative mechanism to a cold bath, where the qubit irreversibly switches to its excited state if and only if a photon enters the resonator.
Journal ArticleDOI
Nondestructive discrimination of a new family of highly entangled states in IBM quantum computer
TL;DR: In this article, the authors considered Z-states as a type of highly entangled states like cluster states, which can be used for one-way or measurement-based quantum computation, and designed new quantum circuits to nondestructively discriminate these highly entangled Z-state.
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.