Quantum Information Processing, Vol. 4, No. 6, December 2005 (© 2006)
Multiple RF Coil Nuclear Magnetic Resonance
Lisa C. Siskind,
Bruce E. Hammer,
Nelson L. Christensen,
and Jeffrey Yepez
Received July 7, 2005; accepted December 5, 2005; publishedonline February 24, 2006
Recent work has demonstrated the feasibility of using an array of quantum infor-
mation processors connected via classical channels (type II quantum computer)
to implement a quantum lattice-gas algorithm. This paper describes work towards
constructing a new experimental set-up for a type II quantum computer. This set-
up has new hardware and software speciﬁcations but does follow previously pub-
lished approaches of operation encoding the initial mass density onto a twoqubit
processor and using standard pulse techniques to step through the algorithm. New
hardware for this system includes the ability to read both qubits at once, effec-
tively reducing the processing time by twofold. Hardware changes also include the
use of multiple coils controlled by a single spectrometer and a hardware switch.
New software includes a top level control system for the spectrometer for quick
experimental conﬁguration as well as conﬁgurable modeling software to verify
results. Results are presented here from a system with the ﬁnal software imple-
mentations and the two channel spectrometer conﬁguration run on a single proto-
type coil. Progress towards the ﬁnal multi-coil implementation is described.
KEY WORDS: Quantum information processing; nuclear magnetic resonance;
quantum lattice gas; diffusion equation; quantum computing.
PACS: 03.67.Lx; 82.56.-b.
Researchers in the newly emerging ﬁeld of quantum information process-
ing have made great strides both in its theoretical development and exper-
imental practice during the last several years but progress is still strongly
Center for Interdisciplinary Applications in Magnetic Resonance, University of Minnesota,
Minneapolis, MN 55455, USA.
Carleton College, Northﬁeld, MN 55057, USA.
Air Force Research Laboratory, Hanscom Field, MA 01731, USA.
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1570-0755/05/1200-0433/0 © 2006 Springer Science+Business Media, Inc.