Hyperfine and Optical Barium Ion Qubits

Abstract

State preparation, qubit rotation, and high fidelity readout are demonstrated for two separate \baseven qubit types. First, an optical qubit on the narrow 6S${}_{1/2}$ to 5D${}_{5/2}$ transition at 1.76 $\mu$m is implemented. Then, leveraging the techniques developed there for readout, a ground state hyperfine qubit using the magnetically insensitive transition at 8 GHz is accomplished.

References in corpus (7)

• Quantum Computing
• Quantum Teleportation Between Distant Matter Qubits
• Manipulation and Detection of a Trapped Yb+ Ion Hyperfine Qubit
• Quantum interference from remotely trapped ions
• Photoionization and Photoelectric Loading of Barium Ion Traps
• High fidelity entanglement of 43Ca+ hyperfine clock states
• Nuclear magnetic octupole moment and the hyperfine structure of the $5D_{3/2,5/2}$ states of the Ba${}^{+}$ ion

Cited by in corpus (25)

• Noisy intermediate-scale quantum computers
• Practical trapped-ion protocols for universal qudit-based quantum computing
• High fidelity state preparation and measurement of ion hyperfine qubits with I > 1/2
• Spectroscopy of a synthetic trapped ion qubit
• High-fidelity remote entanglement of trapped atoms mediated by time-bin photons
• Direct Observation of Ion Micromotion in a Linear Paul Trap
• Precision measurements on the ${}^{138}$Ba${}^{+}$ $6s^2{S}_{1/2}-5d^2{D}_{5/2}$ clock transition
• Interferometric thermometry of a single sub-Doppler cooled atom
• State selective detection of hyperfine qubits
• Optical Barium Ion Qubit
• Adiabatic passage in the presence of noise
• Randomness expansion secured by quantum contextuality
• High-Fidelity Simultaneous Detection of Trapped Ion Qubit Register
• Spectroscopy on a single trapped 137Ba+ ion for nuclear magnetic octupole moment determination
• Experimental determination of the nuclear magnetic octupole moment of ${}^{137}$Ba${}^{+}$ ion
• Entanglement between a trapped ion qubit and a 780-nm photon via quantum frequency conversion
• Isotope-Selective Laser Ablation Ion-Trap Loading of ${}^{137}{\mathrm{Ba}}^{+}$ using a ${\mathrm{BaCl}}_2$ Target
• Electromagnetically-Induced-Transparency Cooling of High-Nuclear-Spin Ions
• Ion Trap with In-Vacuum High Numerical Aperture Imaging for a Dual-Species Modular Quantum Computer
• Raman sideband cooling of a 138Ba+ ion using a Zeeman interval
• Measurement of Lande g factor of 5D5/2 state of BaII with a single trapped ion
• Experimental realization of direct entangling gates between dual-type qubits
• Cold ion beam in a storage ring as a platform for large-scale quantum computers and simulators: challenges and directions for research and development
• Engineering $\mathrm{SU}(1,1)\otimes \mathrm{SU}(1,1)$ vibrational states
• Direct measurement of isotope shifts in the barium 6s${}^2$ ${}^1$S${}_0$-5d6p ${}^3$D${}_1^{\text{o}}$ transition