Quantum computing and nuclear magnetic resonance by Jones, J

Nuclear magnetic resonance quantum computation by Jones, J

“…Nuclear Magnetic Resonance (NMR) is arguably both the best and the worst technology we have for the implementation of small quantum computers. …”

Approximate quantum cloning with nuclear magnetic resonance. by Cummins, H, Jones, C, Furze, A, Soffe, N, Mosca, M, Peach, J, Jones, J

“…Here we describe a nuclear magnetic resonance (NMR) experiment that uses a three qubit NMR device to implement the one-to-two approximate quantum cloning network of Buzek et al. …”

Nuclear magnetic resonance data processing methods by Jones, J, Jonathan A. Jones

“…This thesis describes the application of a wide variety of data processing methods, in particular the Maximum Entropy Method (MEM), to data from Nuclear Magnetic Resonance (NMR) experiments. Chapter 1 provides a brief introduction to NMR and to data processing, which is developed in chapter 2. …”

Geometric quantum computation using nuclear magnetic resonance by Jones, J, Vedral, V, Ekert, A, Castagnoli, G

“…Here we combine these ideas by performing a nuclear magnetic resonance experiment in which a conditional Berry phase is implemented, demonstrating a controlled phase shift gate.…”

Quantum logic gates and nuclear magnetic resonance pulse sequences. by Jones, J, Hansen, R, Mosca, M

“…There has recently been considerable interest in the use of nuclear magnetic resonance (NMR) as a technology for the implementation of small quantum computers. …”

Nuclear magnetic resonance: a quantum technology for computation and spectroscopy by Cummins, H, Jones, J

Quantum computing - Fast searches with nuclear magnetic resonance computers by Jones, J

Implementation of a quantum algorithm on a nuclear magnetic resonance quantum computer by Jones, J, Mosca, M

Preparing high purity initial states for nuclear magnetic resonance quantum computing. by Anwar, MS, Blazina, D, Carteret, H, Duckett, S, Halstead, T, Jones, J, Kozak, C, Taylor, R

“…Here we demonstrate how parahydrogen can be used to prepare a two-spin system in an almost pure state which is suitable for implementing nuclear magnetic resonance quantum computation. A 12 ns laser pulse is used to initiate a chemical reaction involving pure parahydrogen (the nuclear spin singlet of H2). …”

Implementing quantum logic gates with gradient ascent pulse engineering: principles and practicalities. by Rowland, B, Jones, J

“…We briefly describe the use of gradient ascent pulse engineering (GRAPE) pulses to implement quantum logic gates in nuclear magnetic resonance quantum computers, and discuss a range of simple extensions to the core technique. …”

Resonance offset tailored composite pulses. by Cummins, H, Jones, J

“…We describe novel composite pulse sequences which act as general rotors and thus are particularly suitable for nuclear magnetic resonance quantum computation. The resonance offset tailoring to enhance nutations approach permits perfect compensation of off-resonance errors at two selected frequencies placed symmetrically around the frequency of the radiofrequency source.…”

Robust quantum information processing with techniques from liquid-state NMR. by Jones, J

“…While nuclear-magnetic-resonance (NMR) techniques are unlikely to lead to a large-scale quantum computer, they are well suited to investigating basic phenomena and developing new techniques. …”

Drive-noise tolerant optical switching inspired by composite pulses by Bulmer, J, Jones, J, Walmsley, I

“…Express 17(26), 23793 (2009).] and techniques from the field of Nuclear Magnetic Resonance known as composite pulses, we present switches which offer protection against drive-noise in both the on and off state of the switch for both the phase and intensity information encoded in the switched optical mode.…”

Practical pulse engineering: Gradient ascent without matrix exponentiation by Bhole, G, Jones, J

“…Since 2005, there has been a huge growth in the use of engineered control pulses to perform desired quantum operations in systems such as nuclear magnetic resonance quantum information processors. These approaches, which build on the original gradient ascent pulse engineering algorithm, remain computationally intensive because of the need to calculate matrix exponentials for each time step in the control pulse. …”

Further analysis of some symmetric and antisymmetric composite pulses for tackling pulse strength errors. by Husain, S, Kawamura, M, Jones, J

“…Composite pulses have found widespread use in both conventional Nuclear Magnetic Resonance experiments and in experimental quantum information processing to reduce the effects of systematic errors. …”

Coherent control of spin systems for quantum information processing by Rowland, B, Ben Rowland

“…<p>Over the last few years, the GRAPE algorithm has become of central importance in the development of general purpose control sequences for several branches of Nuclear Magnetic Resonance. In this thesis, the application of the GRAPE algorithm to quantum information processing tasks is considered. …”

Rapid sample-mixing technique for transient NMR and photo-CIDNP spectroscopy: applications to real-time protein folding. by Mok, K, Nagashima, T, Day, I, Jones, J, Jones, C, Dobson, C, Hore, P

“…We describe the development and application of a novel rapid sample-mixing technique for real-time NMR (nuclear magnetic resonance) spectroscopy. The apparatus consists of an insert inside a conventional NMR tube coupled to a rapid injection syringe outside the NMR magnet. …”