2001 Fiscal Year Final Research Report Summary
RESEARCH ON SYNTHESIS OF MULTI-QUBIT QUANTUM COMPUTER
| Project/Area Number |
11650045
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Osaka University |
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Principal Investigator |
KITAGAWA Masahiro GRADUATE SCHOOL OF ENGINEERING SCIENCE, OSAKA UNIVERSITY, ASSOCIATE PROFESSOR, 基礎工学研究科, 助教授 (20252629)
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| Project Period (FY) |
1999 – 2000
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| Keywords | QUANTUM COMPUTER / NUCLEAR MAGNETIC RESONANCE / MOLECULE / POLYMER / QUANTUM BIT / QUANTUM CIRCUIT / QUANTUM GATE / QUANTUM ALGORITHM |
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| Research Abstract |
The following research has been done to increase the number of qubits (quantum bits) of molecular quantum computers using nuclear magnetic resonance (NMR).
(a) Quantum circuit synthesis method: The method for resolving arbitrary unitary operation into 1- and 2-qubit elementary quantum gates directly implemented in NMR experiment.
(b) Quantum computation experiments: 3-qubit molecules are searched and found. Shaped pulse technique is developed to manipulate each of the homo-nuclear spins independently and simultaneously. 3-qubit quantum computation experiments such as Grover search and Deutsch-Jozsa algorithms have been done.
(c) Polymer quantum circuit: Quantum circuit synthesis based on nearest neighbor coupling in one-dimensional polymer is studied by computer simulation. Polymers with the appropriate structure are searched and found.
(d) Quantum tomography: Tomography on indirectly coupled 2-qubits is developed and experimentally demonstrated to accommodate observation of internal state of multi-qubit quantum computer.
(e) Quantum algorithms: Deutsch-Jozsa type algorithm has been modified for ensemble average measurement on a single qubit.
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