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
Fiber-connectorized micropillar cavities
Florian Haupt,S. S. R. Oemrawsingh,Susanna M. Thon,Hyochul Kim,Dustin Kleckner,Dapeng Ding,Donald J. Suntrup,Pierre Petroff,Dirk Bouwmeester +8 more
TL;DR: In this paper, the authors present a method for permanently connecting and coupling a single mode fiber to a singlemode of a micropillar cavity with embedded quantum dots (QDs).
Journal ArticleDOI
Optimizing Scheme for Remote Preparation of Four-particle Cluster-like Entangled States
Dong Wang,Liu Ye +1 more
TL;DR: The results show that the new and optimal scheme to realize the remote preparation for this class of cluster-like states with the aid of two bipartite partially entangled channels is more economic and feasible compared with the previous.
Journal ArticleDOI
Thermal entanglement of a two-qutrit Ising system with Dzialoshinski–Moriya interaction
TL;DR: In this paper, the influence of magnetic field, temperature, and Dzialoshinski-Moriya (DM) interaction on the entanglement of a two-qutrit Ising system was investigated in terms of negativity for a wide range of parameters.
Journal ArticleDOI
Multiscale entanglement renormalization ansatz for spin chains with continuously varying criticality
TL;DR: In this article, the authors used multiscale entanglement renormalization ansatz (MERA) to numerically investigate three critical quantum spin chains with onsite symmetry: a staggered XXZ model, a transverse field cluster model, and the quantum Ashkin-Teller model.
Journal ArticleDOI
Building of one-way Hadamard gate for squeezed coherent states
TL;DR: In this paper, an optical scheme to conditionally generate even or odd squeezed superpositions of coherent states (SSCSs) is presented, which consists of an unbalanced beam splitter whose transmittance tends to unity and additional balanced beam splitters and photodetectors in auxiliary modes.
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.