Fast quantum logic gates with trapped-ion qubits
(2017)
The effect of atomic response time in the theory of Doppler cooling of trapped ions
(2017)
High-fidelity spatial and polarization addressing of Ca-43(+) qubits using near-field microwave control
PHYSICAL REVIEW A 95:2 (2017) ARTN 022337
High-Fidelity Trapped-Ion Quantum Logic Using Near-Field Microwaves.
Physical review letters 117:14 (2016) 140501-140501
Abstract:
We demonstrate a two-qubit logic gate driven by near-field microwaves in a room-temperature microfabricated surface ion trap. We introduce a dynamically decoupled gate method, which stabilizes the qubits against fluctuating energy shifts and avoids the need to null the microwave field. We use the gate to produce a Bell state with fidelity 99.7(1)%, after accounting for state preparation and measurement errors. The gate is applied directly to ^{43}Ca^{+} hyperfine "atomic clock" qubits (coherence time T_{2}^{*}≈50  s) using the oscillating magnetic field gradient produced by an integrated microwave electrode.High-fidelity trapped-ion quantum logic using near-field microwaves
(2016)