Blueprint for quantum computing using electrons on helium

Abstract

We present a blueprint for building a fault-tolerant quantum computer using the spin states of electrons on the surface of liquid helium. We propose to use ferromagnetic micropillars to trap single electrons on top of them and to generate a local magnetic field gradient. Introducing a local magnetic field gradient hybridizes charge and spin degrees of freedom, which allows us to benefit from both the long coherence time of the spin state and the long-range Coulomb interaction that affects the charge state. We present concrete schemes to realize single- and two-qubit gates and quantum-non-demolition read-out. In our framework, the hybridization of charge and spin degrees of freedom is large enough to perform fast qubit gates and small enough not to degrade the coherence time of the spin state significantly, which leads to the realization of high-fidelity qubit gates.

References in corpus (41)

• Surface codes: Towards practical large-scale quantum computation
• Quantum information with Rydberg atoms
• QuTiP 2: A Python framework for the dynamics of open quantum systems
• Randomized Benchmarking of Quantum Gates
• Simple pulses for elimination of leakage in weakly nonlinear qubits
• Landau-Zener-Stuckelberg interferometry
• Electrically driven single electron spin resonance in a slanting Zeeman field
• Scalable Noise Estimation with Random Unitary Operators
• Fast universal quantum control above the fault-tolerance threshold in silicon
• Silicon CMOS architecture for a spin-based quantum computer
• Strong spin-photon coupling in silicon
• A practical scheme for quantum computation with any two-qubit entangling gate
• Coherent single electron spin control in a slanting Zeeman field
• A high-sensitivity gate-based charge sensor in silicon
• Coherence Time of a Solid-State Nuclear Qubit
• Quantifying the quantum gate fidelity of single-atom spin qubits in silicon by randomized benchmarking
• Solid-state qubits integrated with superconducting through-silicon vias
• Qubits with electrons on liquid helium
• High-fidelity quantum gates in Si/SiGe double quantum dots
• Proposal for manipulating and detecting spin and orbital states of trapped electrons on helium using cavity quantum electrodynamics
• Single-shot Readout of a Superconducting Qubit using a Josephson Parametric Oscillator
• Long-distance spin-spin coupling via floating gates
• The effect of noise correlations on randomized benchmarking
• Spectroscopy of Wigner molecules on superfluid helium using a superconducting resonator
• An ultra sensitive radio frequency single electron transistor working up to 4.2 K
• Exact two-qubit universal quantum circuit
• Single electrons on solid neon as a solid-state qubit platform
• Subharmonic transitions and Bloch-Siegert shift in electrically driven spin resonance
• Rydberg Quantum Gates Free from Blockade Error
• Counting Individual Electrons on Liquid Helium
• Extremely efficient clocked electron transfer on superfluid helium
• Large nuclear spin polarization in gate-defined quantum dots using a single-domain nanomagnet
• Relaxation of the Excited Rydberg States of Surface Electrons on Liquid Helium
• Average Fidelity in n-Qubit systems
• Trapping electrons in a room-temperature microwave Paul trap
• Feasibility study of quantum computing using trapped electrons
• Piezoacoustics for precision control of electrons floating on helium
• Spin dynamics in quantum dots on liquid helium
• Trapping electrons in electrostatic traps over the surface of helium
• Spin-orbit couplings between distant electrons trapped individually on liquid helium
• Magnetometry of micro-magnets with electrostatically defined Hall bars

Cited by in corpus (10)

• Coulomb interaction-driven entanglement of electrons on helium
• High-impedance resonators for strong coupling to an electron on helium
• Detection of Quantized Vortices using Fourth Sound Attenuation
• Probing the Quantum Capacitance of Rydberg Transitions of Surface Electrons on Liquid Helium via Microwave Frequency Modulation
• Characterization of Tunnel Diode Oscillator for Qubit Readout Applications
• Engineering artificial atomic systems of giant electric dipole moment
• Strong coherent ion-electron coupling using a wire data bus
• Universal quantum gates by nonadiabatic holonomic evolution for the surface electron
• A cryogenic chamber setup for superfluid helium experiments with optical fiber and electrical access
• The toric code under antiferromagnetic isotropic Heisenberg interactions