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… 
4 Citations

Figures from this paper

Quantum Zeno effect and quantum nondemolition spin measurement in a quantum dot–micropillar cavity in the strong coupling regime
We theoretically describe the quantum Zeno effect in a spin-photon interface represented by a charged quantum dot in a micropillar cavity in the strong coupling regime. This simplest model allows for
Optical measurement of electron spins in quantum dots: Quantum Zeno effects
We describe the effects of the quantum back action under continuous optical measurement of electron spins in quantum dots. We consider the system excitation by elliptically polarized light close to
Perspective of self-assembled InGaAs quantum-dots for multi-source quantum implementations
In recent years, semiconductor quantum dots have demonstrated their potential to reach the goal of being an ideal source of single and entangled photon pairs. Exciting reports of near unity
Quantum Zeno effect under continuous spin noise measurement in a quantum dot-micropillar cavity
We theoretically describe the quantum Zeno effect in a spin-photon interface represented by a charged quantum dot in a micropillar cavity. The electron spin in this system entangles with the

References

SHOWING 1-10 OF 113 REFERENCES
Nuclear spin dynamics and Zeno effect in quantum dots and defect centers
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
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
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
TLDR
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
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
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
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.
TLDR
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.
TLDR
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
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
...
1
2
3
4
5
...