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FM: Fall Meeting

FM 24: Quantum Sensing: Entanglement and Beyond Shot Noise

FM 24.4: Talk

Montag, 23. September 2019, 17:15–17:30, 3044

Quantum Fourier Transform algorithm for sensing applications — •Vadim Vorobev, Sebastian Zaiser, Nikolas Abt, Durga Dasari, and Jörg Wrachtrup — 3rd Physical Institute, University of Stuttgart, Stuttgart, Germany

In recent decade several milestones were reached along the way to perform nanolocalised nuclear magnetic resonance sensing with chemical resolution [1,2, 3]. Among the others a significant step towards increasing the resolution of the sensor is the usage of the quantum memory associated with the nuclear spin [4] which gives the possibility to perform correlation spectroscopy measurements with record resolution. The drawback of such approach is a long time overdraft due to the waiting time between the two correlation steps. This time could be efficiently used for storing processing the information sensed by the electron spin within multi qubit register formed by nearby nuclear spins. Here we present an experimental demonstration of the quantum phase estimation algorithm for sensing external classical and quantum signals.

References:

[1] N. Aslam et. al. Science 2017

[2] M. Pfender et. al. Nano Let. 2019

[3] P. Neumann et. al. Science 2010

[4] M. Pfender et. al. Nat. Com. 2017