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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Entanglement of linear cluster states in terms of averaged entropies
Ye Cao,Hui Li,Gui-Lu Long +2 more
TL;DR: In this article, the average subsystem von Neumann entropies of the linear cluster state and investigated the quantum entanglement of linear cluster states in terms of multiple entropy measures (MEMS) was proposed.
Journal ArticleDOI
Efficient parity-encoded optical quantum computing
TL;DR: In this article, a linear optics quantum computation scheme with a greatly reduced cost in resources compared to that proposed by Knill, Laflamme, and Milburn (KLM) is presented.
Journal ArticleDOI
Single-photon detection and cryogenic reconfigurability in lithium niobate nanophotonic circuits.
Emma Lomonte,Martin A. Wolff,Fabian Beutel,Simone Ferrari,Carsten Schuck,Wolfram H. P. Pernice,Francesco Lenzini +6 more
TL;DR: In this article, the authors demonstrate the combined operation of an electrically tunable Mach-Zehnder interferometer and two waveguide-integrated SNSPDs at its outputs.
Journal ArticleDOI
Entanglement in Valence-Bond-Solid States
Vladimir E. Korepin,Ying Xu +1 more
TL;DR: In this article, a self-contained and pedagogical review of entanglement in Valence-Bond-Solid (VBS) states defined on a lattice or a graph is presented.
Journal ArticleDOI
Quantum-Teleportation-Inspired Algorithm for Sampling Large Random Quantum Circuits.
TL;DR: In this article, the classical computation in the physical-qubit state space is converted to simulate teleportation in logical-qubits state space, resulting in a much smaller number of qubits involved in classical computing.
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.