# Spin and Orbital Spectroscopy in the Absence of Coulomb Blockade in Lead Telluride Nanowire Quantum Dots

@article{Gomanko2021SpinAO, title={Spin and Orbital Spectroscopy in the Absence of Coulomb Blockade in Lead Telluride Nanowire Quantum Dots}, author={M. A. Gomanko and Eline J. de Jong and Y. Jiang and Sander G. Schellingerhout and Erik P.A.M. Bakkers and Sergey M. Frolov}, journal={SciPost Physics}, year={2021} }

We investigate quantum dots in semiconductor PbTe nanowire devices.
Due to the accessibility of ambipolar transport in PbTe, quantum dots
can be occupied both with electrons and holes. Owing to a very large
dielectric constant in PbTe of order 1000, we do not observe Coulomb
blockade which typically obfuscates the orbital and spin spectra. We
extract large and highly anisotropic effective Landé g-factors, in
the range 20-44. The absence of Coulomb blockade allows direct readout,
at zero source…

## One Citation

### Small Charging Energies and g-Factor Anisotropy in PbTe Quantum Dots

- PhysicsNano letters
- 2022

PbTe is a semiconductor with promising properties for topological quantum computing applications. Here, we characterize electron quantum dots in PbTe nanowires selectively grown on InP. Charge…

## References

SHOWING 1-10 OF 55 REFERENCES

### Growth of PbTe nanowires by molecular beam epitaxy

- PhysicsMaterials for Quantum Technology
- 2022

Advances in quantum technology may come from the discovery of new materials systems that improve the performance or allow for new functionality in electronic devices. Lead telluride (PbTe) is a…

### Electrical control of single hole spins in nanowire quantum dots.

- PhysicsNature nanotechnology
- 2013

Gate-tunable hole quantum dots can be formed in InSb nanowires and used to demonstrate Pauli spin blockade and electrical control of single hole spins and allows the hyperfine interaction strengths, g-factors and spin blockade anisotropies to be compared directly in the two regimes.

### A valley-spin qubit in a carbon nanotube.

- PhysicsNature nanotechnology
- 2013

A qubit encoded in two nanotube valley-spin states is realized, with coherent manipulation via electrically driven spin resonance mediated by a bend in the nanotubes, showing that, even with low nuclear spin abundance, coherence can be strongly degraded if the qubit states are coupled to electric fields.

### Fast spin-orbit qubit in an indium antimonide nanowire.

- PhysicsPhysical review letters
- 2013

Rabi oscillation frequencies exceeding 100 MHz for spin-orbit qubits in InSb nanowires and coherence time T(2)(*)=8±1 ns at a driving frequency of 18.65 GHz is reported.

### Spins in few-electron quantum dots

- Physics
- 2007

The canonical example of a quantum-mechanical two-level system is spin. The simplest picture of spin is a magnetic moment pointing up or down. The full quantum properties of spin become apparent in…

### Modulation doping and observation of the integral quantum Hall effect in PbTe/Pb1-xEuxTe multiquantum wells

- Physics
- 1993

In Pb1−xEuxTe layers grown by molecular beam epitaxy a drastic reduction of electron mobility is observed for increasing Eu content. This is exploited for the investigation of the electronic…

### Spin–orbit qubit in a semiconductor nanowire

- PhysicsNature
- 2010

The coherence times achieved here are sufficient for the conversion of an electronic qubit into a photon, which can serve as a flying qubit for long-distance quantum communication.

### Semiconductor-Nanowire-Based Superconducting Qubit.

- PhysicsPhysical review letters
- 2015

A hybrid qubit based on a semiconductor nanowire with an epitaxially grown superconductor layer and the absence of flux control allows operation in a magnetic field, relevant for topological quantum information is introduced.

### Experimental investigation of spin-orbit coupling in n-type PbTe quantum wells

- Physics
- 2014

The spin-orbit coupling is studied experimentally in two PbTe quantum wells by means of weak antilocalization effect. Using the Hikami-Larkin-Nagaoka model through a computational global optimization…

### Calculation of Landé g factors for III-V nanowhisker quantum dots and comparison with experiment

- Physics
- 2007

The coupling between a magnetic field and the spin of an electron confined to a quantum dot is determined by the g factor, which is strongly affected by the structure of the dot. Uncertainties in a…