# Few-second-long correlation times in a quantum dot nuclear spin bath probed by frequency-comb nuclear magnetic resonance spectroscopy

@article{Waeber2016FewsecondlongCT, title={Few-second-long correlation times in a quantum dot nuclear spin bath probed by frequency-comb nuclear magnetic resonance spectroscopy}, author={A. M. Waeber and Mark Hopkinson and Ian Farrer and David A. Ritchie and J. Nilsson and R. Mark Stevenson and Amanda J. Bennett and Andrew J. Shields and Guido Burkard and Alexander I. Tartakovskii and M. S. Skolnick and Evgeny A. Chekhovich}, journal={Nature Physics}, year={2016}, volume={12}, pages={688-693} }

Using a frequency-comb nuclear magnetic resonance spectroscopy technique it is possible to probe the fluctuations in the nuclear spin bath of a self-assembled quantum dot and reveal long nuclear spin correlation times over one second.

## 15 Citations

Quantum dots: Nuclear spins get a comb-over

- Physics, Chemistry
- 2016

A frequency comb technique used in NMR spectroscopy reveals the dynamics of the nuclear spin bath in self-assembled quantum dots.

Dynamical suppression of fluctuations in an interacting nuclear spin bath of a self-assembled quantum dot using multiple pulse nuclear magnetic resonance

- Physics
- 2017

Electron spin qubit coherence in quantum dots is ultimately limited by random nuclear spin bath fluctuations. Here we aim to eliminate this randomness by making spin bath evolution deterministic. We…

Quantum dot spin coherence governed by a strained nuclear environment

- PhysicsNature communications
- 2016

Spin coherence can be improved by applying large magnetic fields and reducing strain inhomogeneity by recovering the intrinsic coherence time set by the interaction with the inhomogeneously strained nuclear bath.

Decoherence and fluctuation dynamics of the quantum dot nuclear spin bath probed by nuclear magnetic resonance

- Physics, Chemistry
- 2017

Dynamics of nuclear spin decoherence and nuclear spin flip-flops in self-assembled InGaAs/GaAs quantum dots are studied experimentally using optically detected nuclear magnetic resonance (NMR).…

Pulse control protocols for preserving coherence in dipolar-coupled nuclear spin baths

- PhysicsNature Communications
- 2019

An approach to controlling and extending the coherence of a nuclear spin bath around self-assembled quantum dots is introduced and insight into the many-body dynamics is gained.

Ultrafast Manipulation of Excitons and Spins in Quantum Dots

- Physics
- 2017

This chapter reviews the coherent manipulation of excitons and spins in self-assembled InGaAs quantum dots by ultrafast laser pulses. We begin with a review of the basic theory of coherent control of…

Electrically tunable dynamic nuclear spin polarization in GaAs quantum dots at zero magnetic field

- Physics
- 2018

In III-V semiconductor nano-structures the electron and nuclear spin dynamics are strongly coupled. Both spin systems can be controlled optically. The nuclear spin dynamics is widely studied, but…

Measurement of the spin temperature of optically cooled nuclei and GaAs hyperfine constants in GaAs/AlGaAs quantum dots.

- PhysicsNature materials
- 2017

This work measures the nuclear polarization in GaAs/AlGaAs quantum dots with high accuracy using a new approach enabled by manipulation of the nuclear spin states with radiofrequency pulses and finds that optically cooled nuclei are well described within a classical spin temperature framework.

Rapid survey of nuclear quadrupole resonance by broadband excitation with comb modulation and dual-mode acquisition.

- PhysicsPhysical chemistry chemical physics : PCCP
- 2020

An efficient, two-step NQR protocol is reported by bringing rapid-scan and frequency-comb together, and the spin dynamics under the comb-modulated HS pulse is studied by numerical simulations and experimentally demonstrates the feasibility.

Cat-state generation and stabilization for a nuclear spin through electric quadrupole interaction

- Physics
- 2017

Spin cat states are superpositions of two or more coherent spin states (CSSs) that are distinctly separated over the Bloch sphere. Additionally, the nuclei with angular momenta greater than 1/2…

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