Die u:cris Detailansicht:
Optimal linear optical implementation of a single-qubit damping channel
- Autor(en)
- Kent Fisher, Robert Prevedel, Rainer Kaltenbaek, Kevin J. Resch
- Abstrakt
We experimentally demonstrate a single-qubit decohering quantum channel using linear optics. We implement the channel, whose special cases include the familiar amplitude-damping channel and the bit-flip channel, using a single, static optical setup. Following a recent theoretical result (Piani et al 2011 Phys. Rev. A 84 032304), we realize the channel in an optimal way, maximizing the probability of success, i.e. the probability for the photonic qubit to remain in its encoding. Using a two-photon entangled resource, we characterize the channel using ancilla-assisted process tomography and find average process fidelities of 0.98 ± 0.01 and 0.976 ± 0.009 for amplitude-damping and the bit-flip case, respectively.
- Organisation(en)
- Quantenoptik, Quantennanophysik und Quanteninformation
- Externe Organisation(en)
- University of Waterloo (UW)
- Journal
- New Journal of Physics
- Band
- 14
- Anzahl der Seiten
- 8
- ISSN
- 1367-2630
- DOI
- https://doi.org/10.1088/1367-2630/14/3/033016
- Publikationsdatum
- 2012
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103026 Quantenoptik
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/095fd5c1-c38a-4f8c-8590-a99e2dab4194