Results 21 to 30 of about 49,915 (309)
Generalized Flow and Determinism in Measurement-based Quantum Computation [PDF]
, 2007 We extend the notion of quantum information flow defined by Danos and Kashefi for the one-way model and present a necessary and sufficient condition for the deterministic computation in this model.
Kashefi, E. +3 more
core +1 more source
Many Worlds, the Cluster-state Quantum Computer, and the Problem of the Preferred Basis [PDF]
, 2011 I argue that the many worlds explanation of quantum computation is not licensed by, and in fact is conceptually inferior to, the many worlds interpretation of quantum mechanics from which it is derived. I argue that the many worlds explanation of quantum
Cuffaro, Michael, Michael Cuffaro
core +1 more source
Nature Communications, 2021 Operating donor-based quantum computers in silicon is hindered by the dependence of inter-qubit coupling on the precise donor position. Here, the authors show controlled rotation operation on exchange-coupled electron spins in the weak-exchange regime ...
Mateusz T. Ma̧dzik +8 more
doaj +1 more source
Multiparameter Estimation with Two-Qubit Probes in Noisy Channels
Entropy, 2023 This work compares the performance of single- and two-qubit probes for estimating several phase rotations simultaneously under the action of different noisy channels.
Lorcán O. Conlon +2 more
doaj +1 more source
npj Quantum Information, 2021 Finding the optimal attainable precisions in quantum multiparameter metrology is a non-trivial problem. One approach to tackling this problem involves the computation of bounds which impose limits on how accurately we can estimate certain physical ...
Lorcán O. Conlon +3 more
doaj +1 more source
Quantum Hypercomputation - Hype or Computation? [PDF]
, 2007 A recent attempt to compute a (recursion--theoretic) non--computable function using the quantum adiabatic algorithm is criticized and found wanting.
Amit Hagar +3 more
core +1 more source
Quantum computing for quantum tunneling [PDF]
Physical Review D, 2021 We demonstrate how quantum field theory problems can be embedded on quantum annealers. The general method we use is a discretisation of the field theory problem into a general Ising model, with the continuous field values being encoded into Ising spin chains.
Steven Abel +2 more
openaire +4 more sources
Enhancing quantum teleportation efficacy with noiseless linear amplification
Nature Communications, 2023 Quantum teleportation constitutes a fundamental tool for various applications in quantum communication and computation. However, state-of-the-art continuous-variable quantum teleportation is restricted to moderate fidelities and short-distance ...
Jie Zhao +8 more
doaj +1 more source
Scholarpedia, 2018 A quantum computer is a machine that exploits quantum phenomena to store information and perform computations. The chief goal of this article is to provide a brief but comprehensive introduction to quantum computing. It overviews some mathematical underpinnings of quantum computation for readers with only a basic knowledge of linear algebra and ...
Pieper, Jaden K., Lladser, Manuel E.
openaire +1 more source
Communications of the ACM, 2008 Researchers are optimistic, but a practical device is years away.
Michael Ross, Mark Oskin
openaire +1 more source