Spin readout of trapped electron qubits

Abstract

We propose a scheme to read out the spin of a single electron quantum bit in a surface Paul trap using oscillating magnetic field gradients. The readout sequence is composed of cooling, driving, amplification and detection of the electron's motion. We study the scheme in the presence of noise and trap anharmonicities at liquid helium temperatures. An analysis of the the four procedures shows short measurement times ($25\mu$s) and high fidelities ($99.7\%$) are achievable with realistic experimental parameters. Our scheme performs the function of fluorescence detection in ion trapping schemes, highlighting the potential to built all-electric quantum computers based on trapped electron spin qubits.

References in corpus (20)

• Quantum Computing
• Quantum computing with trapped ions
• Quantum computation with ions in thermal motion
• Entanglement and quantum computation with ions in thermal motion
• Realization of a scalable Shor algorithm
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• Coherence of qubits based on single Ca${}^{+}$ ions
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• Microwave guiding of electrons on a chip
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• Quantum information processing with trapped electrons and superconducting electronics
• Towards electron-electron entanglement in Penning traps

Cited by in corpus (8)

• Spectroscopy of Wigner molecules on superfluid helium using a superconducting resonator
• Hybrid quantum systems with trapped charged particles
• One- and two-qubit gate infidelities due to motional errors in trapped ions and electrons
• Trapping electrons in a room-temperature microwave Paul trap
• Feasibility study of quantum computing using trapped electrons
• Relativistic Effects on Entangled Single-Electron Traps
• Shortcuts to Adiabaticity for Fast Qubit Readout in Circuit Quantum Electrodynamics
• Engineering artificial atomic systems of giant electric dipole moment