Quantum Fourier transform for quantum sensing
- URL: http://arxiv.org/abs/2008.09716v1
- Date: Fri, 21 Aug 2020 23:50:28 GMT
- Title: Quantum Fourier transform for quantum sensing
- Authors: Vadim Vorobyov, Sebastian Zaiser, Nikolas Abt, Jonas Meinel, Durga
Dasari, Philipp Neumann and J\"org Wrachtrup
- Abstract summary: We implement the $QFT$ algorithm in a hybrid quantum register consisting of a nitrogen-vacancy (NV) center electron spin and three nuclear spins.
We demonstrate $QFT$ for quantum (spins) and classical signals (radio frequency (RF)) with near Heisenberg limited precision scaling.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The Quantum Fourier Transformation ($QFT$) is a key building block for a
whole wealth of quantum algorithms.
Despite its proven efficiency, only a few proof-of-principle demonstrations
have been reported.
Here we utilize $QFT$ to enhance the performance of a quantum sensor.
We implement the $QFT$ algorithm in a hybrid quantum register consisting of a
nitrogen-vacancy (NV) center electron spin and three nuclear spins.
The $QFT$ runs on the nuclear spins and serves to process the sensor - NV
electron spin signal.
We demonstrate $QFT$ for quantum (spins) and classical signals (radio
frequency (RF) ) with near Heisenberg limited precision scaling.
We further show the application of $QFT$ for demultiplexing the nuclear
magnetic resonance (NMR) signal of two distinct target nuclear spins.
Our results mark the application of a complex quantum algorithm in sensing
which is of particular interest for high dynamic range quantum sensing and
nanoscale NMR spectroscopy experiments.
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