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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Ultracompact generation of continuous-variable cluster states
TL;DR: In this article, the authors propose an experimental scheme that has the potential for large-scale realization of continuous-variable (CV) cluster states for universal quantum computation, by mapping CV cluster-state graphs onto two-mode squeezing graphs, which can be engineered into a single optical parametric oscillator.
Journal ArticleDOI
Quantum Autoencoders to Denoise Quantum Data.
Dmytro Bondarenko,P. Feldmann +1 more
TL;DR: A novel quantum autoencoder is developed that successfully denoises Greenberger-Horne-Zeilinger, W, Dicke, and cluster states subject to spin-flip errors and random unitary noise.
Journal ArticleDOI
Optical quantum memory based on electromagnetically induced transparency.
TL;DR: Details of the physical principle and theory of quantum memory based specifically on EIT are provided and important milestones from the first experimental demonstration to current applications in quantum information systems are reviewed.
Journal ArticleDOI
Fault-tolerant, high-level quantum circuits: form, compilation and description
TL;DR: This work introduces a package that converts high level quantum circuits consisting of commonly used gates into a form employing all decompositions and ancillary protocols needed for fault-tolerant error correction and outputs a standard circuit or a canonical geometric description.
Journal ArticleDOI
Entangling the spatial properties of laser beams.
Katherine Wagner,Jiri Janousek,Vincent Delaubert,Vincent Delaubert,Hongxin Zou,Charles C. Harb,Nicolas Treps,Jean-Francois Morizur,Jean-Francois Morizur,Ping Koy Lam,Hans-A. Bachor +10 more
TL;DR: These results are a conclusive optical demonstration of macroscopic position and momentum quantum entanglement and also confirm that the resources for spatial multimode protocols are available.
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.