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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Quantum-dot-based deterministic photon-emitter interfaces for scalable photonic quantum technology.
TL;DR: In this article, the authors present the physics of deterministic photon-emitter interfaces, including the main photonic building blocks required to scale up, and discuss quantitative performance benchmarks.
Journal ArticleDOI
Manipulation of single neutral atoms in optical lattices
TL;DR: In this article, a scheme to manipulate quantum states of neutral atoms at individual sites of optical lattices using focused laser beams is presented, where position-dependent energy shifts of hyperfine states, combined with microwave radiation, allow selective manipulation of individual target atoms.
Journal ArticleDOI
Measurement of the Entanglement Spectrum of a Symmetry-Protected Topological State Using the IBM Quantum Computer.
TL;DR: In this paper, the authors used the IBM quantum computer to make the first measurement of the entanglement spectrum of a symmetry-protected topological state, which is known as the reduced density matrix (RDM).
Journal ArticleDOI
Long-Range Big Quantum-Data Transmission.
TL;DR: By employing hashing, a deterministic entanglement distillation protocol with one-way communication, one obtains a scalable scheme that allows one to reach arbitrary distances, with constant overhead in resources per repeater station, and ultrahigh rates.
Journal ArticleDOI
Multiparty Delegated Quantum Computing
Elham Kashefi,Anna Pappa +1 more
TL;DR: This work develops the idea of computing over encrypted data, and proposes a multiparty delegated quantum computing protocol in the measurement-based quantum computing framework, and proves the security of the protocol against a dishonest server and against dishonest clients, under the assumption of common classical cryptographic constructions.
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.
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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.