Efficient preparation and detection of microwave dressed-state qubits and qutrits with trapped ions

Abstract

We demonstrate a method for preparing and detecting all eigenstates of a three-level microwave dressed system with a single trapped ion. The method significantly reduces the experimental complexity of gate operations with dressed-state qubits, as well as allowing all three of the dressed-states to be prepared and detected, thereby providing access to a qutrit that is well protected from magnetic field noise. In addition, we demonstrate individual addressing of the clock transitions in two ions using a strong static magnetic field gradient, showing that our method can be used to prepare and detect microwave dressed-states in a string of ions when performing multi-ion quantum operations with microwave and radio frequency fields. The individual addressability of clock transitions could also allow for the control of pairwise interaction strengths between arbitrary ions in a string using lasers.

8 pages

References in corpus (4)

• High-fidelity preparation, gates, memory and readout of a trapped-ion quantum bit
• Efficient Toffoli Gates Using Qudits
• Individual addressing of trapped ions and coupling of motional and spin states using rf radiation
• Generation of spin-motion entanglement in a trapped ion using long-wavelength radiation

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• Resource-Efficient Quantum Computing by Breaking Abstractions
• Fully robust qubit in atomic and molecular three-level systems
• Ground-state cooling of a trapped ion using long-wavelength radiation
• Entangling gates for trapped-ion quantum computation and quantum simulation
• Communication Trade Offs in Intermediate Qudit Circuits
• Randomised benchmarking for universal qudit gates
• Benchmarking of universal qutrit gates