Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Carteret, H."'
Autor:
Carteret, H. A.
We show how to find families of infima and suprema for the entanglement negativity using only a few, low-order moments of the partially transposed density matrix $\rho^{T_2}.$ These moments can be measured using the multi-copy quantum circuits previo
Externí odkaz:
http://arxiv.org/abs/1605.08751
Random Threshold Networks (RTNs) are an idealized model of diluted, non symmetric spin glasses, neural networks or gene regulatory networks. RTNs also serve as an interesting general example of any coordinated causal system. Here we study the conditi
Externí odkaz:
http://arxiv.org/abs/0901.1675
Autor:
Anwar, M. S., Xiao, L., Short, A. J., Jones, J. A., Blazina, D., Duckett, S. B., Carteret, H. A.
Publikováno v:
Phys. Rev. A 71, 032327 (2005)
Twirl operations, which convert impure singlet states into Werner states, play an important role in many schemes for entanglement purification. In this paper we describe strategies for implementing twirl operations, with an emphasis on methods suitab
Externí odkaz:
http://arxiv.org/abs/quant-ph/0409142
Publikováno v:
Chem. Phys. Lett. 400, 94-97 (2004)
We demonstrate the implementation of Grover's quantum search algorithm on a liquid state nuclear magnetic resonance (NMR) quantum computer using essentially pure states. This was achieved using a two qubit device where the initial state is an essenti
Externí odkaz:
http://arxiv.org/abs/quant-ph/0407091
Publikováno v:
Phys. Rev. A 70, 032324 (2004)
We demonstrate the first implementation of a quantum algorithm on a liquid state nuclear magnetic resonance (NMR) quantum computer using almost pure states. This was achieved using a two qubit device where the initial state is an almost pure singlet
Externí odkaz:
http://arxiv.org/abs/quant-ph/0406044
Autor:
Anwar, M. S., Blazina, D., Carteret, H., Duckett, S. B., Halstead, T. K., Jones, J. A., Kozak, C. M., Taylor, R. J. K.
Publikováno v:
Phys. Rev. Lett. 93, 040501 (2004)
Here we demonstrate how para-hydrogen can be used to prepare a two-spin system in an almost pure state which is suitable for implementing nuclear magnetic resonance (NMR) quantum computation. A 12ns laser pulse is used to initiate a chemical reaction
Externí odkaz:
http://arxiv.org/abs/quant-ph/0312014
Publikováno v:
J. Math. Phys. 41, 7932-7939 (2000)
We find a canonical form for pure states of a general multipartite system, in which the constraints on the coordinates (with respect to a factorisable orthonormal basis) are simply that certain ones vanish and certain others are real. For identical p
Externí odkaz:
http://arxiv.org/abs/quant-ph/0006125
Autor:
Carteret, H A, Sudbery, A
Publikováno v:
J. Phys. A 33 (2000), 4981-5002
Entanglement types of pure states of 3 qubits are classified by means of their stabilisers in the group of local unitary operations. It is shown that the stabiliser is generically discrete, and that a larger stabiliser indicates a stationary value fo
Externí odkaz:
http://arxiv.org/abs/quant-ph/0001091
Autor:
Blazina, D., Duckett, S. B., Halstead, T. K., Kozak, C. M., Taylor, R. J. K., Anwar, M. S., Jones, J. A., Carteret, H. A.
Publikováno v:
Magnetic Resonance in Chemistry; Mar2005, Vol. 43 Issue 3, p200-208, 9p
Publikováno v:
Foundations of Physics; Apr1999, Vol. 29 Issue 4, p527-552, 26p