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Algorithmic cooling in a momentum state quantum computer

Algorithmic cooling in a momentum state quantum computer
Algorithmic cooling in a momentum state quantum computer
We describe a quantum computer based upon the coherent manipulation of two-level atoms between discrete one-dimensional momentum states. Combinations of short laser pulses with kinetic energy dependent free phase evolution can perform the logical invert, exchange, controlled-NOT, and Hadamard operations on any qubits in the binary representation of the momentum state, as well as conditional phase inversion. These allow a binary right rotation, which halves the momentum distribution in a single coherent process. Fields for the coherent control of atomic momenta may thus be designed as quantum algorithms.
0031-9007
037904-[4pp]
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Segal, Danny
7eae184b-92b2-49f5-a189-99236eb31eb7
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Segal, Danny
7eae184b-92b2-49f5-a189-99236eb31eb7

Freegarde, Tim and Segal, Danny (2003) Algorithmic cooling in a momentum state quantum computer. Physical Review Letters, 91 (3), 037904-[4pp]. (doi:10.1103/PhysRevLett.91.037904).

Record type: Article

Abstract

We describe a quantum computer based upon the coherent manipulation of two-level atoms between discrete one-dimensional momentum states. Combinations of short laser pulses with kinetic energy dependent free phase evolution can perform the logical invert, exchange, controlled-NOT, and Hadamard operations on any qubits in the binary representation of the momentum state, as well as conditional phase inversion. These allow a binary right rotation, which halves the momentum distribution in a single coherent process. Fields for the coherent control of atomic momenta may thus be designed as quantum algorithms.

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More information

Submitted date: 14 October 2002
Published date: 2003
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 14730
URI: http://eprints.soton.ac.uk/id/eprint/14730
ISSN: 0031-9007
PURE UUID: fd2d19fb-6b40-4cfb-9159-f7b772d63a99
ORCID for Tim Freegarde: ORCID iD orcid.org/0000-0002-0680-1330

Catalogue record

Date deposited: 25 Feb 2005
Last modified: 20 Jul 2019 01:00

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Contributors

Author: Tim Freegarde ORCID iD
Author: Danny Segal

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