Speaker
Description
Barium ions have many interesting features suitable for scalable quantum information processing (QIP), such as metastable states with long lifetimes, enabling the manipulation of beyond-two-level systems, or qudits. Further, visible-wavelength transitions between Barium-ion energy levels enable programmable qubit/qudit manipulation using fiber-based optical modulators. Here, we discuss a QIP apparatus engineered for 16 individually programmable Barium ions. The system features a room-temperature vacuum chamber with pressure < 4e-11 mbar and high optical access from three directions for optical control and measurement of qubits/qudits. A laser-written waveguide, together with fiber-based acousto-optic modulators, enables precise, programmable control of the intensity, frequency, and phase of laser beams at each ion. These capabilities will enable powerful QIP tasks, such as creating arbitrary interactions between qubits to simulate fully connected quantum spin systems.
| Keyword-1 | Quantum computer |
|---|---|
| Keyword-2 | Barium Ion |
| Keyword-3 | Trapped Ion |