Two-Qubit Pulse Gate for the Three-Electron Double Quantum Dot Qubit

Abstract

The three-electron configuration of gate-defined double quantum dots encodes a promising qubit for quantum information processing. I propose a two-qubit entangling gate using a pulse-gated manipulation procedure. The requirements for high-fidelity entangling operations are equivalent to the requirements for the pulse-gated single-qubit manipulations that have been successfully realized for Si QDs. This two-qubit gate completes the universal set of all-pulse-gated operations for the three-electron double-dot qubit and paves the way for a scalable setup to achieve quantum computation.

8 pages, 4 figures

References in corpus (25)

• Spins in few-electron quantum dots
• Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
• Silicon Quantum Electronics
• Demonstration of Two-Qubit Algorithms with a Superconducting Quantum Processor
• An addressable quantum dot qubit with fault-tolerant control fidelity
• Universal Quantum Computation with the Exchange Interaction
• Preparation and Measurement of Three-Qubit Entanglement in a Superconducting Circuit
• Demonstration of Entanglement of Electrostatically Coupled Singlet-Triplet Qubits
• Quantum Coherence in a One-Electron Semiconductor Charge Qubit
• Nonlocal properties of two-qubit gates and mixed states and optimization of quantum computations
• Relaxation, dephasing, and quantum control of electron spins in double quantum dots
• Electrometry Using Coherent Exchange Oscillations in a Singlet-Triplet-Qubit
• Quantum control and process tomography of a semiconductor quantum dot hybrid qubit
• A fast "hybrid" silicon double quantum dot qubit
• Quantum logic gates for coupled superconducting phase qubits
• Charge fluctuation induced dephasing of exchange coupled spin qubits
• Two-axis control of a singlet-triplet qubit with an integrated micromagnet
• Universal set of quantum gates for double-dot spin qubits with fixed interdot coupling
• Coherent Quantum Oscillations in a Silicon Charge Qubit
• Hyperfine interactions in silicon quantum dots
• Fast coherent manipulation of three-electron states in a double quantum dot
• Pulse-gated quantum dot hybrid qubit
• Degenerate Landau-Zener model: Exact analytical solution
• Two-Qubit Couplings of Singlet-Triplet Qubits Mediated by One Quantum State
• Noise-Protected Gate for Six-Electron Double-Dot Qubits

Cited by in corpus (19)

• Quantification and Characterization of Leakage Errors
• Three-electron spin qubits
• High fidelity resonant gating of a silicon based quantum dot hybrid qubit
• A decoherence-free subspace in a charge quadrupole qubit
• A quadrupolar exchange-only spin qubit
• Is all-electrical silicon quantum computing feasible in the long term?
• Spin of a multielectron quantum dot and its interaction with a neighboring electron
• Adiabatic two-qubit gates in capacitively coupled quantum dot hybrid qubits
• Fault-Tolerant Quantum Computation for Singlet-Triplet Qubits with Leakage Errors
• Landau-Majorana-Stuckelberg-Zener dynamics driven by coupling for two interacting qutrit systems
• High-Fidelity Entangling Gates for Quantum-Dot Hybrid Qubits Based on Exchange Interactions
• Coupling-assisted Landau-Majorana-Stuckelberg-Zener transition in two-interacting-qubit systems
• Exact CNOT Gates with a Single Nonlocal Rotation for Quantum-Dot Qubits
• Quantum leakage detection using a model-independent dimension witness
• Controlled-NOT gate sequences for mixed spin qubit architectures in a noisy environment
• Semiconducting double-dot exchange-only qubit dynamics in presence of magnetic and charge noises
• Nonmonotonic buildup of spin-singlet correlations in a double quantum dot
• Noise suppression and long-range exchange coupling for gallium arsenide spin qubits
• Rapid adiabatic gating for capacitively coupled quantum dot hybrid qubits without barrier control