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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The computational power of the W And GHZ States
Ellie D'Hondt,Prakash Panangaden +1 more
TL;DR: In this article, it was shown that the W-state is the only pure state that can be used to exactly solve the problem of leader election in anonymous quantum networks, while the GHZ-state cannot be used for distributed consensus when no classical post-processing is considered.
Journal ArticleDOI
Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer
J. Eli Bourassa,Rafael N. Alexander,Rafael N. Alexander,Michael Vasmer,Michael Vasmer,Ashlesha Patil,Ilan Tzitrin,Takaya Matsuura,Daiqin Su,Ben Q. Baragiola,Saikat Guha,Guillaume Dauphinais,Krishna Kumar Sabapathy,Nicolas C. Menicucci,Ish Dhand +14 more
TL;DR: In this paper, a scalable and fault-tolerant photonic quantum computer informed by the latest developments in theory and technology is presented. But the architecture is based on two-dimensional integrated photonic chips used to produce a qubit cluster state in one temporal and two spatial dimensions.
Journal ArticleDOI
Critical components for diamond-based quantum coherent devices
Andrew D. Greentree,Paolo Olivero,Martin Draganski,E. Trajkov,James R. Rabeau,Patrick Reichart,Brant C. Gibson,Sergey Rubanov,Shane T Huntington,David N. Jamieson,Steven Prawer +10 more
TL;DR: The necessary elements for practical devices exploiting quantum coherence in diamond materials are summarized and progress towards their realization documented in this article, and a brief review of future prospects for diamond-based devices is also provided.
Journal ArticleDOI
Transformation of quantum states using uniformly controlled rotations
TL;DR: A unitary transformation which maps any given state of an n-qubit quantum register into another one is considered, which has applications in the initialization of a quantum computer, and also in some quantum algorithms.
Journal ArticleDOI
Heralded quantum gate between remote quantum memories.
TL;DR: A probabilistic entangling quantum gate between two distant trapped ytterbium ions is demonstrated, sufficient to generate large entangled cluster states for scalable quantum computing.
References
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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.
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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.