# Stabilization of an optical transition energy via nuclear Zeno dynamics in quantum-dot–cavity systems

@article{Nutz2019StabilizationOA, title={Stabilization of an optical transition energy via nuclear Zeno dynamics in quantum-dot–cavity systems}, author={Thomas Nutz and Petros Androvitsaneas and A. B. Young and Ruth Oulton and Dara P. S. McCutcheon}, journal={Physical Review A}, year={2019} }

We investigate the effect of nuclear spins on the phase shift and polarisation rotation of photons scattered off a quantum dot-cavity system. We show that as the phase shift depends strongly on the resonance energy of an electronic transition in the quantum dot, it can provide a sensitive probe of the quantum state of nuclear spins that broaden this transition energy. By including the electron-nuclear spin coupling at a Hamiltonian level within an extended input-output formalism, we show how a…

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## References

SHOWING 1-10 OF 113 REFERENCES

Nuclear spin dynamics and Zeno effect in quantum dots and defect centers

- Physics
- 2008

We analyze nuclear-spin dynamics in quantum dots and defect centers with a bound electron under electron-mediated coupling between nuclear spins due to the hyperfine interaction (``$J$ coupling'' in…

Nuclear spin physics in quantum dots: an optical investigation

- Physics
- 2013

The mesoscopic spin system formed by the 10E4-10E6 nuclear spins in a semiconductor quantum dot offers a unique setting for the study of many-body spin physics in the condensed matter. The dynamics…

Confluence of resonant laser excitation and bidirectional quantum-dot nuclear-spin polarization

- Physics
- 2009

Resonant laser scattering along with photon correlation measurements established the atom-like character of quantum dots. Here, we show that for a wide range of experimental parameters it is…

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.

Solvable quantum model of dynamic nuclear polarization in optically driven quantum dots

- PhysicsPhysical Review B
- 2019

We present a quantum mechanical theory of optically induced dynamic nuclear polarization applicable to quantum dots and other interacting spin systems. The exact steady state of the optically driven…

Theory of dynamic nuclear polarization and feedback in quantum dots

- Physics
- 2014

An electron confined in a quantum dot interacts with its local nuclear spin environment through the hyperfine contact interaction. This interaction combined with external control and relaxation or…

Optical investigations of quantum dot spin dynamics as a function of external electric and magnetic fields

- Physics
- 2008

We have performed all-optical measurements of spin relaxation in single self-assembled InAs /GaAs quantum dots QDs as a function of static external electric and magnetic fields. To study QD spin…

Role of the electron spin in determining the coherence of the nuclear spins in a quantum dot.

- PhysicsNature nanotechnology
- 2016

It is shown that the nuclear spin decoherence time decreases by two orders of magnitude on occupying an empty quantum dot with a single electron, recovering to its original value for two electrons.

Improving a Solid-State Qubit through an Engineered Mesoscopic Environment.

- PhysicsPhysical review letters
- 2017

This work prepares the quantum-dot nuclei under the feedback of coherent population trapping and observes their evolution from a thermal to a reduced-entropy state, with the immediate consequence of extended qubit coherence.

Pure quantum dephasing of a solid-state electron spin qubit in a large nuclear spin bath coupled by long-range hyperfine-mediated interactions

- Physics
- 2009

We investigate decoherence due to pure dephasing of a localized spin qubit interacting with a nuclear spin bath. Although in the limit of a very large magnetic field the only decoherence mechanism is…