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Semiconductor spin qubits
The spin degree of freedom of an electron or a nucleus is one of the most basic properties of
nature and functions as an excellent qubit, as it provides a natural two-level system that is …
nature and functions as an excellent qubit, as it provides a natural two-level system that is …
The germanium quantum information route
In the effort to develop disruptive quantum technologies, germanium is emerging as a
versatile material to realize devices capable of encoding, processing and transmitting …
versatile material to realize devices capable of encoding, processing and transmitting …
Fast two-qubit logic with holes in germanium
Universal quantum information processing requires the execution of single-qubit and two-
qubit logic. Across all qubit realizations, spin qubits in quantum dots have great promise to …
qubit logic. Across all qubit realizations, spin qubits in quantum dots have great promise to …
A germanium hole spin qubit
Holes confined in quantum dots have gained considerable interest in the past few years due
to their potential as spin qubits. Here we demonstrate two-axis control of a spin 3/2 qubit in …
to their potential as spin qubits. Here we demonstrate two-axis control of a spin 3/2 qubit in …
Ultrafast coherent control of a hole spin qubit in a germanium quantum dot
Operation speed and coherence time are two core measures for the viability of a qubit.
Strong spin-orbit interaction (SOI) and relatively weak hyperfine interaction make holes in …
Strong spin-orbit interaction (SOI) and relatively weak hyperfine interaction make holes in …
Hole Spin Qubits in FinFETs With Fully Tunable Spin-Orbit Coupling and Sweet Spots for Charge Noise
The strong spin-orbit coupling in hole spin qubits enables fast and electrically tunable gates,
but at the same time enhances the susceptibility of the qubit to charge noise. Suppressing …
but at the same time enhances the susceptibility of the qubit to charge noise. Suppressing …
Recent advances in hole-spin qubits
In recent years, hole-spin qubits based on semiconductor quantum dots have advanced at a
rapid pace. We first review the main potential advantages of these hole-spin qubits with …
rapid pace. We first review the main potential advantages of these hole-spin qubits with …
Strong spin-orbit interaction and -factor renormalization of hole spins in Ge/Si nanowire quantum dots
The spin-orbit interaction lies at the heart of quantum computation with spin qubits, research
on topologically nontrivial states, and various applications in spintronics. Hole spins in Ge/Si …
on topologically nontrivial states, and various applications in spintronics. Hole spins in Ge/Si …
Direct Rashba spin-orbit interaction in Si and Ge nanowires with different growth directions
We study theoretically the low-energy hole states in Si, Ge, and Ge/Si core/shell nanowires
(NWs). The NW core in our model has a rectangular cross section, the results for a square …
(NWs). The NW core in our model has a rectangular cross section, the results for a square …
Controlling spin-orbit interactions in silicon quantum dots using magnetic field direction
Silicon quantum dots are considered an excellent platform for spin qubits, partly due to their
weak spin-orbit interaction. However, the sharp interfaces in the heterostructures induce a …
weak spin-orbit interaction. However, the sharp interfaces in the heterostructures induce a …