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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Journal ArticleDOI
Fault-tolerant interface between quantum memories and quantum processors.
TL;DR: In this article, the authors propose a subsystem lattice surgery, which requires only two-body nearest-neighbor interactions in a fixed layout in addition to the indispensable error correction.
Journal ArticleDOI
Creating and concentrating quantum resource states in noisy environments using a quantum neural network.
TL;DR: In this paper, a unified state preparation scheme based on a driven quantum network composed of randomly-coupled fermionic nodes is proposed to obtain almost perfect maximally entangled, NOON, W, cluster, and discorded states.
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High Speed Travelling Wave Single-Photon Detectors With Near-Unity Quantum Efficiency
Wolfram P. H. Pernice,Carsten Schuck,Olga Minaeva,Mo Li,G.N. Gol'tsman,Alexander V. Sergienko,Hong X. Tang +6 more
TL;DR: In this article, a superconducting nanowire detector atop nanophotonic waveguides is proposed to achieve high quantum efficiency, high detection speed and low jitter time on chip.
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Coherent Spin-Photon Interface with Waveguide Induced Cycling Transitions.
Martin Hayhurst Appel,Alexey Tiranov,Alisa Javadi,Matthias C. Löbl,Ying Wang,Sven Scholz,Andreas D. Wieck,Arne Ludwig,Richard J. Warburton,Peter Lodahl +9 more
TL;DR: A photonic crystal waveguide is used to demonstrate optical cyclicity up to ≈15 through photonic state engineering while achieving high fidelity spin initialization and coherent optical spin control, paving the way towards scalable multiphoton entanglement generation and on-chip spin-photon gates.
Journal ArticleDOI
Controlled dense coding using a five-atom cluster state in cavity QED
TL;DR: A simple scheme for implementing controlled dense coding by using a five-atom cluster state in cavity QED systems and demonstrating that the four-atom entangled states can be exactly distinguished is presented.
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.