Dephasing of planar Ge hole spin qubits due to 1/$\text{f}$ charge noise

Abstract

Hole spin qubits in Ge, investigated for all-electrical spin manipulation because of its large spin-orbit coupling, are exposed to charge noise leading to decoherence. Here we construct a model of $1/f$ noise from individual fluctuators and determine the dephasing time $T_2^{\ast }$ as a function of qubit properties. $T_2^{\ast }$ decreases with increasing magnetic field and is an order of magnitude longer for out-of-plane than for in-plane fields for the same Zeeman energy. $T_2^{\ast }$ shows little variation as a function of the top gate field and is a complex function of the dot radius. Our results should help experiments to enhance coherence in hole qubit architectures.

arXiv comment8 pages, 6 figures

References in corpus (105)

• Charge insensitive qubit design derived from the Cooper pair box
• Silicon Quantum Electronics
• 1/f noise: implications for solid-state quantum information
• How to Enhance Dephasing Time in Superconducting Qubits
• A four-qubit germanium quantum processor
• The germanium quantum information route
• Semiconductor Qubits In Practice
• Fast two-qubit logic with holes in germanium
• Low-decoherence flux qubit
• Theory of nuclear induced spectral diffusion: Spin decoherence of phosphorus donors in Si and GaAs quantum dots
• Ge hole spin qubit
• Strong Spin-Orbit Interaction and Helical Hole States in Ge/Si Nanowires
• A hole spin qubit in a fin field-effect transistor above 4 kelvin
• A single-hole spin qubit
• Charge fluctuation induced dephasing of exchange coupled spin qubits
• Low- and high-frequency noise from coherent two-level systems
• Electric Dipole Spin Resonance for Heavy Holes in Quantum Dots
• Ultrafast Hole Spin Qubit with Gate-Tunable Spin-Orbit Switch
• Decoherence in qubits due to low-frequency noise
• A singlet triplet hole spin qubit in planar Ge
• Noise and decoherence in quantum two-level systems
• Low-frequency charge noise in Si/SiGe quantum dots
• Low disordered, stable, and shallow germanium quantum wells: a playground for spin and hybrid quantum technology
• Gate-controlled quantum dots and superconductivity in planar germanium
• Ultrafast coherent control of a hole spin qubit in a germanium quantum dot
• Spin lifetime and charge noise in hot silicon quantum dot qubits
• Direct Rashba spin-orbit interaction in Si and Ge nanowires with different growth directions
• Dephasing of Si spin qubits due to charge noise
• Circuit QED with Hole-Spin Qubits in Ge/Si Nanowire Quantum Dots
• Theory of Hole-Spin Qubits in Strained Germanium Quantum Dots
• Rashba spin-orbit coupling and spin relaxation in silicon quantum wells
• Decoherence of electron spin qubits in Si-based quantum computers
• A single hole spin with enhanced coherence in natural silicon
• Electrical control of g-factors in a few-hole silicon nanowire MOSFET
• Optimal operation points for ultrafast, highly coherent Ge hole spin-orbit qubits
• Zeeman splitting in ballistic hole quantum wires
• Dephasing due to background charge fluctuations
• Heavy hole states in Germanium hut wires
• Hole spin qubits in Si FinFETs with fully tunable spin-orbit coupling and sweet spots for charge noise
• Squeezed hole spin qubits in Ge quantum dots with ultrafast gates at low power
• Spin-orbit interactions in inversion-asymmetric 2D hole systems: a variational analysis
• Strong spin-orbit interaction and $g$-factor renormalization of hole spins in Ge/Si nanowire quantum dots
• Relaxation of excited spin, orbital, and valley qubit states in single electron silicon quantum dots
• Simultaneous single-qubit driving of semiconductor spin qubits at the fault-tolerant threshold
• Spin-orbit splitting of valence subbands in semiconductor nanostructures
• Light effective hole mass in undoped Ge/SiGe quantum wells
• Recent advances in hole-spin qubits
• Spin Orientation of Holes in Quantum Wells
• On the nature of tunable hole g-factors in quantum dots
• Sweet-spot operation of a germanium hole spin qubit with highly anisotropic noise sensitivity
• Generating a topological anomalous Hall effect in a non-magnetic conductor
• Self-controlled growth of highly uniform Ge/Si hut wires for scalable qubit devices
• Electrical control of the $g$-tensor of a single hole in a silicon MOS quantum dot
• Hole spin driving by strain-induced spin-orbit interactions
• Single-shot readout of hole spins in Ge
• Decoherence of a qubit by non-Gaussian noise at an arbitrary working point
• Spin relaxation benchmarks and individual qubit addressability for holes in quantum dots
• Coherent spin qubit shuttling through germanium quantum dots
• Charge-insensitive single-atom spin-orbit qubit in silicon
• Universal control of four singlet-triplet qubits
• A natural heavy-hole flopping mode qubit in germanium
• Anisotropic Pauli spin blockade in hole quantum dots
• Supercoupling between heavy-hole and light-hole states in self-assembled quantum dots
• Dissipation in Josephson qubits
• Two-qubit logic with anisotropic exchange in a fin field-effect transistor
• Quantum decoherence of a charge qubit in a spin-fermion model
• Variability of electron and hole spin qubits due to interface roughness and charge traps
• Spin precession and alternating spin polarization in spin-3/2 hole systems
• Hole spin manipulation in inhomogeneous and non-separable electric fields
• Spatial noise correlations beyond nearest-neighbor in ${}^{28}$Si/SiGe spin qubits
• SiGe quantum dots for fast hole spin Rabi oscillations
• Modelling semiconductor spin qubits and their charge noise environment for quantum gate fidelity estimation
• Ballistic one-dimensional holes with strong g-factor anisotropy in germanium
• Quantum Computing with Acceptor Spins in Silicon
• Strong influence of spin-orbit coupling on magnetotransport in two-dimensional hole systems
• Electrical control of the Zeeman spin splitting in two-dimensional hole systems
• Spin blockade as a probe of Zeeman interactions in hole quantum dots
• Anisotropic g-Factor and Spin-Orbit Field in a Ge Hut Wire Double Quantum Dot
• Gate-Tunable Spin-Orbit Coupling in a Germanium Hole Double Quantum Dot
• Probing resonating valence bonds on a programmable germanium quantum simulator
• Electrical operation of planar Ge hole spin qubits in an in-plane magnetic field
• Ultrafast and Electrically Tunable Rabi Frequency in a Germanium Hut Wire Hole Spin Qubit
• Hole spin qubits in thin curved quantum wells
• Hole-phonon interactions in quantum dots: Effects of phonon confinement and encapsulation materials on spin-orbit qubits
• High-fidelity two-qubit gates of hybrid superconducting-semiconducting singlet-triplet qubits
• Mechanisms for strong anisotropy of in-plane g-factors in hole based quantum point contacts
• Linear-in-momentum spin orbit interactions in planar Ge/GeSi heterostructures and spin qubits
• Dipole coupling of a tunable hole double quantum dot in germanium hut wire to a microwave resonator
• High-fidelity spin qubit shuttling via large spin-orbit interaction
• Bichromatic Rabi Control of Semiconductor Qubits
• Geometry of the dephasing sweet spots of spin-orbit qubits
• Electrical control of the sign of the g-factor in a GaAs hole quantum point contact
• Simulation of 1/f charge noise affecting a quantum dot in a Si/SiGe structure
• Entanglement control and magic angles for acceptor qubits in Si
• Electrical operation of hole spin qubits in planar MOS silicon quantum dots
• Dephasing and dissipation in qubit thermodynamics
• Modelling of spin decoherence in a Si hole qubit perturbed by a single charge fluctuator
• Is weak temperature dependence of electron dephasing possible?
• Anisotropic $g$-tensors in hole quantum dots: The role of the transverse confinement direction
• Coupled vertical double quantum dots at single-hole occupancy
• Charge-sensing of a Ge/Si core/shell nanowire double quantum dot using a high-impedance superconducting resonator
• Interacting Two-Level Systems as a Source of 1/f Charge Noise in Quantum Dot Qubits
• Molecular beam epitaxy growth of superconducting tantalum germanide
• Isotropic and Anisotropic g-factor Corrections in GaAs Quantum Dots
• Light-hole spin confined in germanium

Cited by in corpus (4)

• Toward Axion Signal Extraction in Semiconductor Spin Qubits Via Spectral Engineering
• Cancelling second order frequency shifts in Ge hole spin qubits via bichromatic control
• Effect of disorder and strain on the operation of planar Ge hole spin qubits
• Quantum Error Correction Assisted Axion Search in CMOS Spin Qubit Arrays