Optical qubit by conditional interferometry
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN: 1094-1622, Vol: 62, Issue: 3, Page: 8-null
2000
- 30Citations
- 13Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
We suggest a method to prepare any chosen superposition [Formula Presented] of the vacuum and one-photon states. The method is based on a conditional double interferometer fed by a one-photon state and a coherent state. The scheme involves only linear optical elements and avalanche photodetectors, and therefore it should be realizable with current technology. A realistic description of the triggering photodetectors is employed, i.e., we assume that they can only check, with a certain efficiency, whether or not any photon is present. We discuss two working regimes, and show that output states with fidelity arbitrarily close to unit may be obtained, with nonvanishing conditional probability, also for low quantum efficiency at the photodetectors. © 2000 The American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85037207494&origin=inward; http://dx.doi.org/10.1103/physreva.62.033813; https://link.aps.org/doi/10.1103/PhysRevA.62.033813; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevA.62.033813/fulltext; http://link.aps.org/article/10.1103/PhysRevA.62.033813
American Physical Society (APS)
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