Accelerated adiabatic passage of a single electron spin qubit in quantum dots

Abstract

Adiabatic processes can keep the quantum system in its instantaneous eigenstate, which is robust to noises and dissipation. However, it is limited by sufficiently slow evolution. Here, we experimentally demonstrate the transitionless quantum driving (TLQD) of the shortcuts to adiabaticity in gate-defined semiconductor quantum dots (QDs) to greatly accelerate the conventional adiabatic passage for the first time. For a given efficiency of quantum state transfer, the acceleration can be more than twofold. The dynamic properties also prove that the TLQD can guarantee fast and high-fidelity quantum state transfer. In order to compensate for the diabatic errors caused by dephasing noises, the modified TLQD is proposed and demonstrated in experiment by enlarging the width of the counter-diabatic drivings. The benchmarking shows that the state transfer fidelity of 97.8% can be achieved. This work will greatly promote researches and applications about quantum simulations and adiabatic quantum computation based on the gate-defined QDs.

arXiv comment6 pages, 3 figures

References in corpus (40)

• Quantum Computation with Quantum Dots
• Surface codes: Towards practical large-scale quantum computation
• Spins in few-electron quantum dots
• Single-shot read-out of an individual electron spin in a quantum dot
• Adiabatic Quantum Computing
• Shortcuts to adiabaticity: concepts, methods, and applications
• Coherent control of a single electron spin with electric fields
• An addressable quantum dot qubit with fault-tolerant control fidelity
• A Two Qubit Logic Gate in Silicon
• A >99.9%-fidelity quantum-dot spin qubit with coherence limited by charge noise
• Fault-tolerant quantum computation with high threshold in two dimensions
• Shortcut to adiabatic passage in two and three level atoms
• Interfacing spin qubits in quantum dots and donors - hot, dense and coherent
• Computing with spin qubits at the surface code error threshold
• Fast universal quantum control above the fault-tolerance threshold in silicon
• High-fidelity quantum driving
• Universal control of a six-qubit quantum processor in silicon
• Zeeman energy and spin relaxation in a one-electron quantum dot
• Quantum simulation of a Fermi-Hubbard model using a semiconductor quantum dot array
• Two-qubit silicon quantum processor with operation fidelity exceeding 99%
• Scalable gate architecture for densely packed semiconductor spin qubits
• Fast Single-Charge Sensing with an rf Quantum Point Contact
• A Crossbar Network for Silicon Quantum Dot Qubits
• Speeding up adiabatic quantum state transfer by using dressed states
• Accelerated quantum control using superadiabatic dynamics in a solid-state lambda system
• Precision tomography of a three-qubit donor quantum processor in silicon
• Experimental realization of stimulated Raman shortcut-to-adiabatic passage with cold atoms
• Experimental implementation of assisted quantum adiabatic passage in a single spin
• Fast sensing of double-dot charge arrangement and spin state with an rf sensor quantum dot
• Charge-noise spectroscopy of Si/SiGe quantum dots via dynamically-decoupled exchange oscillations
• Nagaoka ferromagnetism observed in a quantum dot plaquette
• Spectrum of the Nuclear Environment for GaAs Spin Qubits
• The experimental realization of high-fidelity `shortcut-to-adiabaticity' quantum gates in a superconducting Xmon qubit
• Fast and robust spin manipulation in a quantum dot by electric fields
• Exploring 2D synthetic quantum Hall physics with a quasi-periodically driven qubit
• Flopping-mode electric dipole spin resonance
• Benchmarking high fidelity single-shot readout of semiconductor qubits
• Coherence of a driven electron spin qubit actively decoupled from quasi-static noise
• Resolving Spin-Orbit and Hyperfine Mediated Electric Dipole Spin Resonance in a Quantum Dot
• High-fidelity adiabatic inversion of a ${}^{31}\mathrm{P}$ electron spin qubit in natural silicon

Cited by in corpus (5)

• Flying Spin Qubits in Quantum Dot Arrays Driven by Spin-Orbit Interaction
• Fast and robust production of quantum superposition states by the fractional shortcut to adiabaticity
• Noninvasive and nonadiabatic quantum Maxwell demon
• Robust composite two-qubit gates for silicon-based spin qubits
• Spin qubit shuttling between coupled quantum dots with inhomogeneous Landé g-tensors