Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Hope, J. J."'
Publikováno v:
Phys. Rev. A 93, 042342 (2016)
Fast entangling gates have been proposed for trapped ions that are orders of magnitude faster than current implementations. We present here a detailed analysis of the challenges involved in performing a successful fast gate. We show that the RWA is a
Externí odkaz:
http://arxiv.org/abs/1601.03110
Autor:
Taylor, R. L., Bentley, C. D. B., Pedernales, J. S., Lamata, L., Solano, E., Carvalho, A. R. R., Hope, J. J.
Publikováno v:
Scientific Reports 7, 46197 (2017)
Large-scale digital quantum simulations require thousands of fundamental entangling gates to construct the simulated dynamics. Despite success in a variety of small-scale simulations, quantum information processing platforms have hitherto failed to d
Externí odkaz:
http://arxiv.org/abs/1601.00359
Autor:
Wigley, P. B., Everitt, P. J., Hengel, A. van den, Bastian, J. W., Sooriyabandara, M. A., McDonald, G. D., Hardman, K. S., Quinlivan, C. D., Manju, P., Kuhn, C. C. N., Petersen, I. R., Luiten, A., Hope, J. J., Robins, N. P., Hush, M. R.
Machine-designed control of complex devices or experiments can discover strategies superior to those developed via simplified models. We describe an online optimization algorithm based on Gaussian processes and apply it to optimization of the product
Externí odkaz:
http://arxiv.org/abs/1507.04964
Publikováno v:
2015 New J. Phys. 17 103025
Fast entangling gates for trapped ions offer vastly improved gate operation times relative to implemented gates, as well as approaches to trap scaling. Gates on neighbouring ions only involve local ions when performed sufficiently fast, and we find t
Externí odkaz:
http://arxiv.org/abs/1507.02783
Autor:
Wigley, P. B., Starkey, L. M., Szigeti, S. S., Jasperse, M., Hope, J. J., Turner, L. D., Anderson, R. P.
Publikováno v:
Phys. Rev. A 96, 013612 (2017)
Controlling quantum fluids at their fundamental length scale will yield superlative quantum simulators, precision sensors, and spintronic devices. This scale is typically below the optical diffraction limit, precluding precise wavefunction engineerin
Externí odkaz:
http://arxiv.org/abs/1412.6854
Publikováno v:
Phys. Rev. Lett. 113, 040501 (2014)
Driven dissipative steady state entanglement schemes take advantage of coupling to the environment to robustly prepare highly entangled states. We present a scheme for two trapped ions to generate a maximally entangled steady state with fidelity abov
Externí odkaz:
http://arxiv.org/abs/1403.2823
Publikováno v:
Phys. Rev. A 87, 062328 (2013)
We study the effects of diffusion on a $\Lambda$-gradient echo memory, which is a coherent optical quantum memory using thermal gases. The efficiency of this memory is high for short storage time, but decreases exponentially due to decoherence as the
Externí odkaz:
http://arxiv.org/abs/1303.4180
Off-resonant optical imaging is the most popular method for continuous monitoring of a Bose-Einstein condensate (BEC). However, the disturbance caused by scattered photons places a serious limitation on the lifetime of such continuously-monitored con
Externí odkaz:
http://arxiv.org/abs/1301.1963
Publikováno v:
New J. Phys. 15 (2013) 043006
We present a fast phase gate scheme that is experimentally achievable and has an operation time more than two orders of magnitude faster than current experimental schemes for low numbers of pulses. The gate time improves with the number of pulses fol
Externí odkaz:
http://arxiv.org/abs/1211.7156
We investigate the use of quantum-jump-based feedback to manipulate the stability of multipartite entangled dark states in an open quantum system. Using the model proposed in Phys. Rev. A 76, 010301(R) (2007) for a pair of atoms, we show a general st
Externí odkaz:
http://arxiv.org/abs/1106.2704