# Observation of the 4π-periodic Josephson effect in indium arsenide nanowires

@article{Laroche2019ObservationOT, title={Observation of the 4$\pi$-periodic Josephson effect in indium arsenide nanowires}, author={Dominique Laroche and Dani{\"e}l Bouman and David J. van Woerkom and Alex Proutski and Chaitanya Murthy and Dmitry I. Pikulin and C. Nayak and Ruben J. J. van Gulik and Jesper Nyg{\aa}rd and Peter Krogstrup and L. P. Kouwenhoven and Attila Geresdi}, journal={Nature Communications}, year={2019}, volume={10} }

Quantum computation by non-Abelian Majorana zero modes (MZMs) offers an approach to achieve fault tolerance by encoding quantum information in the non-local charge parity states of semiconductor nanowire networks in the topological superconductor regime. Thus far, experimental studies of MZMs chiefly relied on single electron tunneling measurements, which lead to the decoherence of the quantum information stored in the MZM. As a next step towards topological quantum computation, charge parity…

## 81 Citations

Superconducting spin properties of Majorana nanowires and the associated spin-orbit coupling driven transverse supercurrent

- PhysicsPhysical Review B
- 2019

It is difficult to unambiguously confirm the existence of Majorana zero modes (MZMs) due to the absence of smoking-gun signatures in charge transport measurements. Recent studies suggest that the…

Thermoelectric Effect in a Correlated Quantum Dot Side-Coupled to Majorana Bound States

- Materials Science, MedicineNanoscale Research Letters
- 2020

Large value of 100% spin-polarized or pure spin thermopower emerges even in the absence of Zeeman splitting in the QD or magnetic electrodes because the MBSs are coupled to electrons of only one certain spin direction in theQD due to the chiral nature of the Majorana fermions.

Absence of supercurrent sign reversal in a topological junction with a quantum dot

- PhysicsPhysical Review B
- 2020

Experimental techniques to verify Majoranas are of current interest. A prominent test is the effect of Majoranas on the Josephson current between two wires linked via a normal junction. Here, we…

Magnetoelectrically tunable Andreev bound state spectra and spin polarization in
p
-wave Josephson junctions

- PhysicsPhysical Review B
- 2019

We demonstrate how the boundary-driven reconstruction of the superconducting order parameter can be employed to manipulate the zero-energy Majorana bound states (MBSs) occurring in a topological…

Transport studies in a gate-tunable three-terminal Josephson junction

- Physics
- 2020

Josephson junctions with three or more superconducting leads have been predicted to exhibit topological effects in the presence of few conducting modes within the interstitial normal material. Such…

Topological superconductivity in planar Josephson junctions: Narrowing down to the nanowire limit

- PhysicsPhysical Review B
- 2019

We theoretically study topological planar Josephson junctions (JJs) formed from spin-orbit-coupled two-dimensional electron gases (2DEGs) proximitized by two superconductors and subjected to an…

Thermodynamics in topological Josephson junctions

- PhysicsPhysical Review Research
- 2021

We study the thermodynamic properties of topological Josephson junctions using a quantum spin Hall (QSH) insulator-based junction as an example. In particular, we propose that phase-dependent…

Full proximity treatment of topological superconductors in Josephson-junction architectures

- PhysicsPhysical Review B
- 2019

Experiments on planar Josephson junction architectures have recently been shown to provide an alternative way of creating topological superconductors hosting accessible Majorana modes. These…

Transport experiments in semiconductor-superconductor hybrid Majorana devices

- Physics
- 2020

As the condensed matter analog of Majorana fermion, Majorana zero-mode is well known as a building block of fault-tolerant topological quantum computing. In this review, we focus on the recent…

Josephson junction of finite-size superconductors on a topological insulator under a magnetic field

- Physics
- 2019

We theoretically study a Josephson junction formed by two finite-size $s$-wave SCs on a topological insulator under a magnetic field. At certain conditions, the junction hosts the chiral Majorana…

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