Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 26: Quantum Information: Atoms and Ions 2
Q 26.4: Vortrag
Mittwoch, 16. März 2011, 11:30–11:45, HÜL 386
Heisenberg limited phase estimation of the electron spin of the the nitrogen-vacancy center in diamond — Ressa Said1, Johannes Beck2, Gerald Waldherr2, •Philipp Neumann2, Fedor Jelezko2, Jason Twamley1, and Jörg Wrachtrup2 — 1Macquarie University Sydney, Australia — 2Universität Stuttgart
The exact determination of a quantum phase yields information about the corresponding Hamiltonian which is vital for quantum information processing or for metrology to name only two applications. Recently adaptive and non-adaptive quantum phase estimation sequencences have been introduced that scale like the Heisenberg limit and therefore beat the standard quantum limit. We show how these techniques can be implemented for quantum phase measurement of a single electron spin associated with the nitrogen-vacancy center in diamond. This system is a promising candidate for room temperature quantum information processing and magnetic field sensing with atomic resolution. Both applications greatly benefit from increased phase measurement speed.