Hannover 2016 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 27: Poster: Quantum Optics and Photonics II

Q 27.60: Poster

Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof

Implementation of the Quantum Fourier Transform in a Solid State Spin Register — •Nikolas Abt, Sebastian Zaiser, Philipp Neumann, and Jörg Wrachtrup — 3. Physikalisches Institut, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

We report on the implementation of the quantum Fourier transform (QFT) [1] in diamond where we use the NV center and the associated ¹⁴N spin as well as ¹³C spins in the environment which couple to the NV through hyperfine interaction. To perform a QFT, not only local but non-local gates are necessary. To this end, we make use of the electron spin of NV⁻ as an ancilla and state selective rotations [2]. We further evaluate the performance of the QFT under experimental constraints like finite coherence times or finite number of available spins. Since the electron is already incorporated into the system, it might be profitable to combine the sensitive sensing capabilities of the electron spin, the robust memory properties of a nuclear spin and the QFT to a hybrid quantum-sensor-quantum-memory tool which will also be discussed.

[1] Nielsen, Michael A., and Isaac L. Chuang. Quantum Computation and Quantum Information. Cambridge University Press, 2010.

[2] Waldherr, G., et al. Quantum Error Correction in a Solid-State Hybrid Spin Register. Nature 506, 204 (2014)