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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Compact Cavity-Enhanced Single-Photon Generation with Hexagonal Boron Nitride
TL;DR: In this paper, color centers hosted by two-dimensional hexagonal boron nitride (hBN) have been used for near-future optical quantum technologies, and the color centers have been shown to be pure and indistinguishable single photons.
Journal ArticleDOI
Tavis-Cummings model and collective multiqubit entanglement in trapped ions
TL;DR: In this article, a method of generating collective multiqubit entanglement via global addressing of an ion chain performing blue and red Tavis-Cummings interactions was presented, where several qubits were coupled to a collective motional mode.
Journal ArticleDOI
Path-polarization hyperentangled and cluster states of photons on a chip
Mario A. Ciampini,Adeline Orieux,Stefano Paesani,Fabio Sciarrino,Giacomo Corrielli,Andrea Crespi,Roberta Ramponi,Roberto Osellame,Paolo Mataloni +8 more
TL;DR: In this paper, the authors demonstrate the contextual use of path and polarization qubits propagating within an integrated quantum circuit, and exploit them to perform the Grover's search algorithm according to the one-way quantum computation model, paving the way toward the full integration on a chip of hybrid multi-qubit multiphoton states.
Journal ArticleDOI
Experimental quantum coding against qubit loss error
TL;DR: This work experimentally demonstrates the feasibility of overcoming the qubit loss error by quantum codes, both in the quantum circuit model and in the one-way quantum computer model, with the smallest nontrivial quantum codes to tackle this problem.
Journal ArticleDOI
Non-Maximally Entangled Controlled Teleportation Using Four Particles Cluster States
TL;DR: In this paper, a new scheme for controlled teleportation with the help of a four-qubit cluster state is proposed, where the receiver introduces an auxiliary qubit and performs some appropriate unitary transformations on his qubits.
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.