Influence of Dynamical Decoupling Sequences with Finite-Width Pulses on Quantum Sensing for AC Magnetometry

2018 ◽  
Vol 10 (5) ◽  
Author(s):  
Toyofumi Ishikawa ◽  
Akio Yoshizawa ◽  
Yasunori Mawatari ◽  
Hideyuki Watanabe ◽  
Satoshi Kashiwaya
Keyword(s):  
Finite Width ◽  
Dynamical Decoupling ◽  
Quantum Sensing

scholarly journals Enhancing the Robustness of Dynamical Decoupling Sequences with Correlated Random Phases

Symmetry ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 730 ◽  
Author(s):  
Zhenyu Wang ◽  
Jorge Casanova ◽  
Martin B. Plenio
Keyword(s):  
Pulse Sequences ◽  
Finite Width ◽  
Signal Distortion ◽  
Dynamical Decoupling ◽  
Quantum Sensing ◽  
Nv Centers

We show that the addition of correlated phases to the recently developed method of randomized dynamical decoupling pulse sequences can improve its performance in quantum sensing. In particular, by correlating the relative phases of basic pulse units in dynamical decoupling sequences, we are able to improve the suppression of the signal distortion due to π pulse imperfections and spurious responses due to finite-width π pulses. This enhances the selectivity of quantum sensors such as those based on NV centers in diamond.

scholarly journals Dynamical-Decoupling-Based Quantum Sensing: Floquet Spectroscopy

2015 ◽  
Vol 5 (4) ◽  
Author(s):  
J. E. Lang ◽  
R. B. Liu ◽  
T. S. Monteiro
Keyword(s):  
Dynamical Decoupling ◽  
Quantum Sensing

scholarly journals Quantum Sensing 1/f Noise via Pulsed Control of a Two-Qubit Gate

Proceedings ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 29
Author(s):  
Antonio D’Arrigo ◽  
Giuseppe Falci ◽  
Elisabetta Paladino
Keyword(s):  
Power Spectrum ◽  
High Frequency ◽  
Quantum Circuits ◽  
Noise Variance ◽  
Dynamical Decoupling ◽  
Noise Characteristics ◽  
Quantum Sensing ◽  
Intrinsic Fluctuations ◽  
Qubit Gate ◽  
High Degree

Dynamical decoupling sequences are a convenient tool to reduce decoherence due to intrinsic fluctuations with 1 / f power spectrum hindering quantum circuits. We study the possibility to achieve an efficient universal two-qubit gate in the presence of 1 / f noise by periodic and Carr-Purcell dynamical decoupling. The high degree of selectivity achieved by these protocols also provides a valuable tool to infer noise characteristics, as the high-frequency cut off and the noise variance. Different scalings of the gate error with noise variance signal the contribution of different noise statistical properties to the gate error.

scholarly journals Finite-pulse-width effect on quantum sensing for an asynchronous alternating-current magnetic field to dynamical decoupling sequences

AIP Advances ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 075013
Author(s):  
Toyofumi Ishikawa ◽  
Akio Yoshizawa ◽  
Yasunori Mawatari ◽  
Satoshi Kashiwaya ◽  
Hideyuki Watanabe
Keyword(s):  
Magnetic Field ◽  
Pulse Width ◽  
Alternating Current ◽  
Dynamical Decoupling ◽  
Quantum Sensing ◽  
Width Effect ◽  
Current Magnetic Field

scholarly journals Nonvanishing effect of detuning errors in dynamical-decoupling-based quantum sensing experiments

2019 ◽  
Vol 99 (1) ◽  
Author(s):  
J. E. Lang ◽  
T. Madhavan ◽  
J.-P. Tetienne ◽  
D. A. Broadway ◽  
L. T. Hall ◽  
...  
Keyword(s):  
Dynamical Decoupling ◽  
Quantum Sensing

Dispersion Characteristics of Multi-Step Open Slow-Wave Systems of Finite Width: Analysis

1997 ◽  
Vol 51 (8) ◽  
pp. 77-84
Author(s):  
L. M. Buzik ◽  
O. F. Pishko ◽  
S.A. Churilova ◽  
O. I. Sheremet
Keyword(s):  
Slow Wave ◽  
Finite Width ◽  
Dispersion Characteristics

Quantum Tunneling

2017 ◽  
Author(s):  
Frank S. Levin
Keyword(s):  
Quantum Tunneling ◽  
Alpha Particles ◽  
Attractive Potential ◽  
Scanning Tunneling ◽  
Finite Width ◽  
Potential Well ◽  
Surface Molecules ◽  
Repulsive Coulomb ◽  
The Subject ◽  
The One

Quantum tunneling, wherein a quanject has a non-zero probability of tunneling into and then exiting a barrier of finite width and height, is the subject of Chapter 13. The description for the one-dimensional case is extended to the barrier being inverted, which forms an attractive potential well. The first application of this analysis is to the emission of alpha particles from the decay of radioactive nuclei, where the alpha-nucleus attraction is modeled by a potential well and the barrier is the repulsive Coulomb potential. Excellent results are obtained. Ditto for the similar analysis of proton burning in stars and yet a different analysis that explains tunneling through a Josephson junction, the connector between two superconductors. The final application is to the scanning tunneling microscope, a device that allows the microscopic surfaces of solids to be mapped via electrons from the surface molecules tunneling into the tip of the STM probe.

scholarly journals Arbitrarily Accurate Pulse Sequences for Robust Dynamical Decoupling

2017 ◽  
Vol 118 (13) ◽  
Author(s):  
Genko T. Genov ◽  
Daniel Schraft ◽  
Nikolay V. Vitanov ◽  
Thomas Halfmann
Keyword(s):  
Pulse Sequences ◽  
Dynamical Decoupling
Sign in / Sign up

Export Citation Format

Share Document