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APS » Journals » Phys. Rev. Lett. » Volume 86 » Issue 20
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Phys. Rev. Lett. 86, 4423–4426 (2001)

Simultaneous Minimum-Uncertainty Measurement of Discrete-Valued Complementary Observables

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Alexei Trifonov*, Gunnar Björk, and Jonas Söderholm
Department of Electronics, Royal Institute of Technology (KTH), Electrum 229, SE-164 40 Kista, Sweden

Received 10 December 1999; published in the issue dated 14 May 2001

We have made the first experimental demonstration of the simultaneous minimum uncertainty product between two complementary observables for a two-state system (a qubit). A partially entangled two-photon state, where each of the photons carries (partial) information of the initial state, was used to perform such a measurement.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.4423
DOI:
10.1103/PhysRevLett.86.4423
PACS:
03.65.Ta

*Permanent address: Ioffe Physical Technical Institute, 26 Polytechnicheskaya, 194021 St. Petersburg, Russia. Electronic address: alexei@ele.kth.se

 
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