Journal
JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS
Volume 6, Issue 8, Pages S828-S833Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1464-4266/6/8/032
Keywords
quantum information processing; Schrodinger cats; quantum metrology; high precision measurements; quantum toolbox
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Funding
- Engineering and Physical Sciences Research Council [GR/S56252/01] Funding Source: researchfish
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We outline a toolbox comprised of passive optical elements, single photon detection and superpositions of coherent states (Schrodinger cat states). Such a toolbox is a powerful collection of primitives for quantum information processing tasks. We illustrate its use by outlining a proposal for universal quantum computation. We utilize this toolbox for quantum metrology applications, for instance weak force measurements and precise phase estimation. We show in both these cases that a sensitivity at the Heisenberg limit is achievable.
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