4.8 Article

Dynamics of Hole Singlet-Triplet Qubits with Large g-Factor Differences

Related references

Note: Only part of the references are listed.
Article Multidisciplinary Sciences

Ultrafast coherent control of a hole spin qubit in a germanium quantum dot

Ke Wang et al.

Summary: Hole-spin qubits in germanium show promise for rapid, all-electrical qubit control. The authors demonstrate ultrafast single-spin manipulation in a hole-based double quantum dot in a germanium hut wire, with a record Rabi frequency exceeding 540 MHz. These results suggest the potential for ultrafast coherent control of hole spin qubits to meet the requirements for scalable quantum information processing.

NATURE COMMUNICATIONS (2022)

Article Nanoscience & Nanotechnology

Ultrafast hole spin qubit with gate-tunable spin-orbit switch functionality

Florian N. M. Froning et al.

Summary: Quantum computers promise to execute complex tasks exponentially faster than classical computers, but require fast and selective control of individual qubits while maintaining coherence. Operating a hole spin qubit in a Ge/Si nanowire all-electrically demonstrates the principle of switching between fast control and increased coherence.

NATURE NANOTECHNOLOGY (2021)

Article Quantum Science & Technology

Optimal operation points for ultrafast, highly coherent Ge hole spin-orbit qubits

Zhanning Wang et al.

Summary: Hole quantum dots play a central role in electrical spin qubit manipulation, exhibiting optimal operation points for fast and long-lived performance. The unique properties of group IV crystals make hole spin qubits ideal for scalable quantum computing with ultra-fast operation and high coherence.

NPJ QUANTUM INFORMATION (2021)

Article Chemistry, Physical

A singlet-triplet hole spin qubit in planar Ge

Daniel Jirovec et al.

Summary: Ge quantum well hole singlet-triplet spin qubits demonstrate adjustable frequencies and extended coherence times, competing with state-of-the-art spin qubits. Operable at low magnetic fields of a few millitesla, they show potential for on-chip integration with superconducting technologies.

NATURE MATERIALS (2021)

Article Materials Science, Multidisciplinary

All-electrical control of hole singlet-triplet spin qubits at low-leakage points

Philipp M. Mutter et al.

Summary: The study explores the impact of spin-orbit interaction on heavy holes confined in a double quantum dot in the presence of a magnetic field. Coupling between hole states of different spins can be canceled at certain detunings and tilting angles of the magnetic field, allowing for control over the system. In systems with strong spin-orbit interaction at weak magnetic fields, the choice of magnetic field can reduce leakage errors and provide reliable control over the qubit ground state.

PHYSICAL REVIEW B (2021)

Article Materials Science, Multidisciplinary

Squeezed hole spin qubits in Ge quantum dots with ultrafast gates at low power

Stefano Bosco et al.

Summary: The study proposes a minimal design modification of planar devices to enhance interactions for low-power ultrafast quantum operations. By establishing an asymmetric potential that strongly compresses the quantum dot, the confinement-induced spin-orbit interaction can be turned on and off at will in state-of-the-art qubits.

PHYSICAL REVIEW B (2021)

Article Physics, Multidisciplinary

Natural heavy-hole flopping mode qubit in germanium

Philipp M. Mutter et al.

Summary: The study demonstrates that in heavy-hole systems in germanium, utilizing sizable cubic Rashba spin-orbit interaction can result in highly tunable spin coupling strengths, enabling fast qubit gate operations.

PHYSICAL REVIEW RESEARCH (2021)

Article Multidisciplinary Sciences

Fast two-qubit logic with holes in germanium

N. W. Hendrickx et al.

NATURE (2020)

Article Multidisciplinary Sciences

A single-hole spin qubit

N. W. Hendrickx et al.

NATURE COMMUNICATIONS (2020)

Article Nanoscience & Nanotechnology

A quantum-dot spin qubit with coherence limited by charge noise and fidelity higher than 99.9%

Jun Yoneda et al.

NATURE NANOTECHNOLOGY (2018)

Article Physics, Multidisciplinary

Electrical Spin Driving by g-Matrix Modulation in Spin-Orbit Qubits

Alessandro Crippa et al.

PHYSICAL REVIEW LETTERS (2018)

Article Multidisciplinary Sciences

A germanium hole spin qubit

Hannes Watzinger et al.

NATURE COMMUNICATIONS (2018)

Article Materials Science, Multidisciplinary

Readout of singlet-triplet qubits at large magnetic field gradients

Lucas A. Orona et al.

PHYSICAL REVIEW B (2018)

Article Multidisciplinary Sciences

A CMOS silicon spin qubit

R. Maurand et al.

NATURE COMMUNICATIONS (2016)

Article Materials Science, Multidisciplinary

Visibility study of S-T+ Landau-Zener-Stuckelberg oscillations without applied initialization

G. Granger et al.

PHYSICAL REVIEW B (2015)

Article Physics, Multidisciplinary

Cubic Rashba Spin-Orbit Interaction of a Two-Dimensional Hole Gas in a Strained-Ge/SiGe Quantum Well

Rai Moriya et al.

PHYSICAL REVIEW LETTERS (2014)

Article Multidisciplinary Sciences

Two-axis control of a singlet-triplet qubit with an integrated micromagnet

Xian Wu et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2014)

Article Materials Science, Multidisciplinary

Singlet-triplet splitting in double quantum dots due to spin-orbit and hyperfine interactions

Dimitrije Stepanenko et al.

PHYSICAL REVIEW B (2012)

Review Physics, Multidisciplinary

Landau-Zener-Stuckelberg interferometry

S. N. Shevchenko et al.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2010)

Article Multidisciplinary Sciences

A Coherent Beam Splitter for Electronic Spin States

J. R. Petta et al.

SCIENCE (2010)

Article Materials Science, Multidisciplinary

Pauli spin blockade in the presence of strong spin-orbit coupling

J. Danon et al.

PHYSICAL REVIEW B (2009)

Article Materials Science, Multidisciplinary

Spin decoherence of a heavy hole coupled to nuclear spins in a quantum dot

Jan Fischer et al.

PHYSICAL REVIEW B (2008)

Article Physics, Multidisciplinary

Electric dipole spin resonance for heavy holes in quantum dots

Denis V. Bulaev et al.

PHYSICAL REVIEW LETTERS (2007)

Article Materials Science, Multidisciplinary

Electric-dipole-induced spin resonance in quantum dots

Vitaly N. Golovach et al.

PHYSICAL REVIEW B (2006)

Article Multidisciplinary Sciences

Coherent manipulation of coupled electron spins in semiconductor quantum dots

JR Petta et al.

SCIENCE (2005)

Article Physics, Multidisciplinary

Phonon-induced decay of the electron spin in quantum dots

VN Golovach et al.

PHYSICAL REVIEW LETTERS (2004)