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 (7)

• Quantum Computing
• Quantum computing with trapped ions
• A long-lived Zeeman trapped-ion qubit
• Measurement of Ion Motional Heating Rates over a Range of Trap Frequencies and Temperatures
• Microwave guiding of electrons on a chip
• Experimental and theoretical challenges for the trapped electron quantum computer
• Two mode coupling in a single ion oscillator via parametric resonance

Cited by in corpus (1)

• Hybrid quantum systems with trapped charged particles