Office: CHB 111
Phone: (405) 325-3092
Email: bmfung@ou.edu
Full Publications List
|
Bing M. Fung
- George Lynn Cross Research Professor.
- Diploma (Chung Chi College, Hong Kong) 1963
- Ph.D. (California Institute of Technology)
1967
- University of Oklahoma Sigma Xi Faculty Research
Award, 1974.
- NIH Research Career Development Award, 1975-1980.
- University of Oklahoma Regents' Award for
Superior Accomplishment in Research, 1985.
- American Chemical Society Oklahoma Chemist
of the Year, 1993.
- George Lynn Cross Research Professor, 1995.
|
Division:
Research Interests
- Nuclear magnetic resonance spectroscopy
|
(1) NMR quantum computing
Quantum information processing has been a very active
area of research in the past few years. At the present
stage of development in quantum computing, nuclear magnetic
resonance (NMR) spectroscopy is considerably ahead of
other techniques, and has been used in prototype quantum
computers to implement different kinds of quantum algorithms
and simulate other quantum systems. NMR quantum computing
requires the preparation and manipulation of pseudopure
quantum states. The existing methods use elaborate pulse
sequences with many steps to create these pseudopure
states. We have developed two new approaches aiming
at overcoming this problem: the first method involves
multi-frequency irradiation, and the second method uses
pairs of pseudopure states instead of individual pseudopure
states (POPS) as the basis for NMR quantum computing.
These methods have been applied to study several special
liquid crystal systems, including the implementation
of some quantum algorithms. The following 1H
spectra (left column) and 19F spectra (right
column) show 16 POPS in a 5-qubit system, 2,4,5-trifluorobenzonitrile
in a liquid crystal solution.
Publications on this
topic
A. K. Khitrin and B. M. Fung,
"Nuclear Magnetic Resonance Quantum Logic Gates
Using Quadrupolar Nuclei," J. Chem. Phys.,
112, 6963-6965 (2000).
A. Khitrin, H. Sun, and B.
M. Fung, "The Method of Multi-Frequency Excitation
for Creating Pseudopure States for NMR Quantum Computing,"
Phys. Rev. A, 63, 020301-1-4 (2001).
B. M. Fung, "The Use
of Pairs of Pseudopure States for NMR Quantum Computing,"
Phys. Rev. A, 63, 022304-1-7 (2001).
A. K. Khitrin and B. M. Fung,
"NMR Simulation of an Eight-State Quantum System,"
Phys. Rev. A, 64, 032306-1-4 (2001).
B. M. Fung, “Pairs of Pseudopure
States for 4- and 5-qubit Nuclear Magnetic Resonance
Systems," J. Chem. Phys., 115, 8044-8048
(2001).
V. Ermakov and B. M. Fung,
“Experimental Realization of a Continuous Version of
the Grover Algorithm,” Phys. Rev. A, 66,
042310-1-0423105 (2002).
A. K. Khitrin, V. L. Ermakov,
and B. M. Fung, “NMR Implementation of a Parallel Search
Algorithm,” Phys. Rev. Lett., 89, 277902/1-277902/4
(2002).
V. Ermakov and B. M. Fung, “Nuclear Magnetic Resonance Implementation
of the Deutsch-Jozsa Algorithm Using Different Initial
States,” J. Chem. Phys., 118, 10376-10381
(2003).
(2) Binary information storage and processing at the molecular
level
Recently we have found a novel and interesting way
to store hundreds of bits information in liquid crystals
molecules. This is accomplished by applying a programmable
multi-frequency excitation with low amplitude to a nematic
liquid crystal, so that it is possible to create a large
number of peaks at the irradiating frequencies. By controlling
the amplitudes of the harmonics in the excitation pulse,
it is possible to encode the 1H NMR peaks
to store information in the molecule using binary codes.
For example, the sentence “the quick brown fox jumps
over the lazy dog” can be stored in a liquid crystal
molecules for tens of milliseconds. It is also possible
to use a parallel search algorithm to find specific
letters (e.g. e and o in this sentence)
without using parallel processors.
|
 We
have also developed a technique called “molecular
photography” to store a two-dimensional pattern
consisting of 32x32
= 1024 bits in a liquid crystal and retrieve the
stored information as a stack of NMR spectra (right).The
storage and retrieval of other patterns have also
been demonstrated.
The origin of the selective excitation of systems
with homogenous broadening, including liquid crystals
and isotropic liquids, has been explored.
|
Publications
on this topic
A. K. Khitrin, V. L. Ermakov,
and B. M. Fung, “Information Storage Using a Cluster
of Dipolar-coupled Spins,” Chem. Phys. Lett.,
360, 161-166 (2002).
A. K. Khitrin, V. L. Ermakov,
and B. M. Fung, “Nuclear Magnetic Resonance Molecular
Photography,” J. Chem. Phys., 117, 6903-6906
(2002).
A. K. Khitrin, V. L. Ermakov,
and B. M. Fung, “An Algorithm for Parallel Search Using
NMR,” Phys. Rev. Lett., in press.
B. M. Fung
and V. L. Ermakov, “A Simplified Method for NMR Photography,”
J. Magn. Reson., 166, 147-151 (2004).
A. K. Khitrin, V. Ermakov,
and B. M. Fung, “Coherent Response Signals of Dipolar-Coupled
Spin Systems,” Z. Naturfor., in press.
B. M. Fung and V. L. Ermakov,
“Selective Excitation in Spin systems with Homogeneous
Broadening,” J. Chem. Phy., 120, May 22 (2004).
|
