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Quantum-information processing by nuclear magnetic resonance: experimental implementation of half-adder and subtractor operations using an oriented spin-7/2 system

Quantum-information processing by nuclear magnetic resonance: experimental implementation of half-adder and subtractor operations using an oriented spin-7/2 system
Quantum-information processing by nuclear magnetic resonance: experimental implementation of half-adder and subtractor operations using an oriented spin-7/2 system
The advantages of using quantum systems for performing many computational tasks have already been established. Several quantum algorithms have been developed which exploit the inherent property of quantum systems such as superposition of states and entanglement for efficiently performing certain tasks. The experimental implementation has been achieved on many quantum systems, of which nuclear magnetic resonance has shown the largest progress in terms of number of qubits. This paper describes the use of a spin-7/2 as a three-qubit system and experimentally implements the half-adder and subtractor operations. The required qubits are realized by partially orienting Cs-133 nuclei in a liquid-crystalline medium, yielding a quadrupolar split well-resolved septet. Another feature of this paper is the proposal that labeling of quantum states of system can be suitably chosen to increase the efficiency of a computational task.
creating pseudopure states, deutsch-jozsa algorithm, error-correcting codes, logic gates, selective pulses, nmr, computer, computation
1050-2947
022313-[5pp]
Murali, K.V.R.M.
0e54174b-b1d7-4637-982b-3dd37d6a7a85
Sinha, Neeraj
5b82293d-0811-4d61-b973-15e8631061f5
Mahesh, T.S.
1f3272b4-c179-4c5f-be5e-dc534bec4137
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Ramanathan, K.V.
37040d09-9648-4330-be9c-6dd46bfc28ce
Kumar, Anil
133bdc58-f607-4279-bb3f-ac867aa26a79
Murali, K.V.R.M.
0e54174b-b1d7-4637-982b-3dd37d6a7a85
Sinha, Neeraj
5b82293d-0811-4d61-b973-15e8631061f5
Mahesh, T.S.
1f3272b4-c179-4c5f-be5e-dc534bec4137
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Ramanathan, K.V.
37040d09-9648-4330-be9c-6dd46bfc28ce
Kumar, Anil
133bdc58-f607-4279-bb3f-ac867aa26a79

Murali, K.V.R.M., Sinha, Neeraj, Mahesh, T.S., Levitt, Malcolm H., Ramanathan, K.V. and Kumar, Anil (2002) Quantum-information processing by nuclear magnetic resonance: experimental implementation of half-adder and subtractor operations using an oriented spin-7/2 system. Physical Review A, 66 (2), 022313-[5pp]. (doi:10.1103/PhysRevA.66.022313).

Record type: Article

Abstract

The advantages of using quantum systems for performing many computational tasks have already been established. Several quantum algorithms have been developed which exploit the inherent property of quantum systems such as superposition of states and entanglement for efficiently performing certain tasks. The experimental implementation has been achieved on many quantum systems, of which nuclear magnetic resonance has shown the largest progress in terms of number of qubits. This paper describes the use of a spin-7/2 as a three-qubit system and experimentally implements the half-adder and subtractor operations. The required qubits are realized by partially orienting Cs-133 nuclei in a liquid-crystalline medium, yielding a quadrupolar split well-resolved septet. Another feature of this paper is the proposal that labeling of quantum states of system can be suitably chosen to increase the efficiency of a computational task.

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More information

Published date: 2002
Keywords: creating pseudopure states, deutsch-jozsa algorithm, error-correcting codes, logic gates, selective pulses, nmr, computer, computation

Identifiers

Local EPrints ID: 19824
URI: http://eprints.soton.ac.uk/id/eprint/19824
ISSN: 1050-2947
PURE UUID: c4f84e30-9350-4122-9c40-3a27424bbc64
ORCID for Malcolm H. Levitt: ORCID iD orcid.org/0000-0001-9878-1180

Catalogue record

Date deposited: 21 Feb 2006
Last modified: 09 Jan 2022 03:05

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Contributors

Author: K.V.R.M. Murali
Author: Neeraj Sinha
Author: T.S. Mahesh
Author: K.V. Ramanathan
Author: Anil Kumar

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