Journal ArticleDOI
A one-way quantum computer.
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
How to Manipulate Cold Atoms
J. I. Cirac,Peter Zoller +1 more
TL;DR: Cirac and Zoller as mentioned in this paper used optical lattices to tune the interactions between cold atoms and constructed a quantum simulator to enable the first quantum computers that can outperform ordinary computers for nontrivial problems.
Journal ArticleDOI
Towards On-Chip Integrated Optical Quantum Frequency Combs
Lucia Caspani,Christian Reimer,Michael Kues,Piotr Roztocki,Matteo Clerici,Benjamin Wetzel,Yoann Jestin,Marcello Ferrera,Marco Peccianti,Alessia Pasquazi,Luca Razzari,Brent E. Little,Sai T. Chu,David J. Moss,Roberto Morandotti +14 more
TL;DR: In this article, optical microcavities have been used for the generation of quantum states of light on chip, which can offer a solution to the issue of low efficiency (low number of photons generated) typical of the materials mostly used in integrated platforms.
Journal ArticleDOI
Typical entanglement in multi-qubit systems
TL;DR: In this article, it was shown that typical pure states of N qubits are highly entangled but have decreasing amounts of pairwise entanglement (measured using the Wootter's concurrence formula) as N increases.
Journal ArticleDOI
Renormalization-group approach to quantum Fisher information in an XY model with staggered Dzyaloshinskii-Moriya interaction
TL;DR: It is revealed that the scaling exponent for quantum Fisher information at the critical point can be used to describe the correlation length of this model, addressing the substantial role of staggered Dzyaloshinskii-Moriya interaction in modulating quantum phase transitions.
Posted Content
Many-body quantum magic
Zi-Wen Liu,Andreas Winter +1 more
TL;DR: In this paper, it was shown that the maximum and typical magic of a many-body state is essentially $n, simultaneously for a range of natural resource measures, and that the resource theory of magic with stabilizer-preserving free operations is asymptotically reversible.
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.