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Title: Controlling the quantum dynamics of a mesoscopic spin bath in diamond

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep00382· OSTI ID:1624567
 [1];  [1];  [1];  [2];  [2];  [1]
  1. Delft Univ. of Technology (Netherlands). Kavali Inst. of Nanoscience Delft
  2. Ames Lab., and Iowa State Univ., Ames, IA (United States)

Understanding and mitigating decoherence is a key challenge for quantum science and technology. The main source of decoherence for solid-state spin systems is the uncontrolled spin bath environment. Here, we demonstrate quantum control of a mesoscopic spin bath in diamond at room temperature that is composed of electron spins of substitutional nitrogen impurities. The resulting spin bath dynamics are probed using a single nitrogen-vacancy (NV) centre electron spin as a magnetic field sensor. We exploit the spin bath control to dynamically suppress dephasing of the NV spin by the spin bath. Furthermore, by combining spin bath control with dynamical decoupling, we directly measure the coherence and temporal correlations of different groups of bath spins. These results uncover a new arena for fundamental studies on decoherence and enable novel avenues for spin-based magnetometry and quantum information processing.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1624567
Journal Information:
Scientific Reports, Vol. 2, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Subnanometre resolution in three-dimensional magnetic resonance imaging of individual dark spins journal March 2014
Microwave saturation spectroscopy of nitrogen-vacancy ensembles in diamond journal June 2014
Demonstration of a Coherent Electronic Spin Cluster in Diamond journal September 2016
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Fully robust qubit in atomic and molecular three-level systems journal December 2016
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Quantum logic readout and cooling of a single dark electron spin journal May 2013
Environment-assisted quantum control of a solid-state spin via coherent dark states text January 2014
Strong driving of a single spin using arbitrarily polarized fields journal July 2014
Dressed-State Resonant Coupling between Bright and Dark Spins in Diamond journal April 2013
Wide-band nanoscale magnetic resonance spectroscopy using quantum relaxation of a single spin in diamond journal October 2016
Investigation of room temperature multispin-assisted bulk diamond 13 C hyperpolarization at low magnetic fields journal July 2018
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Observing bulk diamond spin coherence in high-purity nanodiamonds conference January 2014
Smooth optimal control with Floquet theory journal November 2013
Observing bulk diamond spin coherence in high-purity nanodiamonds journal November 2013
Subnanometre resolution in three-dimensional magnetic resonance imaging of individual dark spins text January 2014
Robust-fidelity atom-photon entangling gates in the weak-coupling regime text January 2012
Noise Spectroscopy Using Correlations of Single-Shot Qubit Readout text January 2012
Probing surface noise with depth-calibrated spins in diamond text January 2014
Environment-assisted quantum control of a solid-state spin via coherent dark states text January 2014
Fully robust qubit in atomic and molecular three-level systems text January 2016
Noise-resilient architecture of a hybrid electron-nuclear quantum register in diamond text January 2017
Ultralong Dephasing Times in Solid-State Spin Ensembles via Quantum Control text January 2018
Investigation of room temperature multispin-assisted bulk diamond 13C hyperpolarization at low magnetic fields text January 2018
Spin properties of NV centers in high-pressure, high-temperature grown diamond text January 2018
Investigation of Near-Surface Defects of Nanodiamonds by High-Frequency EPR and DFT Calculation text January 2019
Pulse control protocols for preserving coherence in dipolar-coupled nuclear spin baths journal July 2019