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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Cluster state entanglement generation and concentration on nitrogen-vacancy centers in decoherence-free subspace
TL;DR: In this article, the authors proposed the cluster state entanglement generation and concentration schemes on nitrogen-vacancy centers in decoherence-free subspace, which is well suited for the systematic preparation of cluster states in one-way quantum computation due to the controllability and scalability.
Journal ArticleDOI
Controlled Bidirectional Quantum Secure Direct Communication Network Using Classical XOR Operation and Quantum Entanglement
TL;DR: In this letter, a multi-user controlled bidirectional quantum secure direct communication network protocol is suggested based on classical exclusive-or operation and quantum entanglement, which has higher efficiency than the previous ones.
Journal ArticleDOI
Thermal entanglement in a mixed-spin Heisenberg XXZ model under a nonuniform external magnetic field
TL;DR: In this article, the thermal entanglement in (1/2,1) mixed-spin Heisenberg XXZ model is investigated under an external non-uniform magnetic field.
Journal ArticleDOI
Dispersion-engineered χ(2) nanophotonics: a flexible tool for nonclassical light
TL;DR: Design rules for the bandwidth and interaction lengths of various nonlinear processes are established and examples for how these processes can be engineered in nanophotonic devices are provided, showing that dispersion-engineered devices can outperform their conventional counterparts.
Journal ArticleDOI
Asymmetric bidirectional controlled remote preparation of an arbitrary four-qubit cluster-type state and a single-qubit state
TL;DR: It is shown that only if the two senders and the controller collaborate with each other, the ABCRSP can be completed successfully, and the total success probability in this scheme can reach 1, that is, the scheme is deterministic.
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.