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
Experimental synchronization of independent entangled photon sources.
Tao Yang,Qiang Zhang,Teng-Yun Chen,Shan Lu,Juan Yin,Jian-Wei Pan,Zhiyi Wei,Jing-Rong Tian,Jie Zhang +8 more
TL;DR: The techniques developed in this experiment are not only important for realistic linear optical quantum-information processing, but also enable new tests of local realism.
Proceedings ArticleDOI
New Limits on Fault-Tolerant Quantum Computation
TL;DR: In this paper, it was shown that quantum circuits cannot be made fault-tolerant against a depolarizing noise level of (6 − 2 ϵ 2π 2 )/7 \approx 45% for arbitrary (even classical) computation.
Journal ArticleDOI
Device-independent tomography of multipartite quantum states
TL;DR: In this paper, a self-test method to characterize quantum states based on observed statistics and without knowing any detail of the inner mechanism or the physical dimension of the Hilbert space of the system is presented.
Journal ArticleDOI
Experimental entanglement distribution by separable states.
Christina E. Vollmer,Daniela Schulze,Tobias Eberle,Vitus Händchen,Jaromír Fiurášek,Roman Schnabel +5 more
TL;DR: This work experimentally distribute entanglement and successfully proves that the transmitted light beam is indeed not entangled with the parties' local systems.
ReportDOI
Cluster State Quantum Computation
TL;DR: The final report of the AFRL/RI in-house project Cluster State Quantum Computation (CSQC) is presented in this article, which includes the development and characterization of a new multipli-entangled photon source that increased the usable number of photon pairs by a factor of six over conventional entangled photon sources, design of multi-layer superconducting number-resolving photon detector, and experimental investigation into the requirements of imperfect (non-unit fidelity) two-qubit linear optical photonic gates.
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.