State-dependent lattices for quantum computing with alkaline-earth-metal atoms

Abstract

Recent experimental progress with Alkaline-Earth atoms has opened the door to quantum computing schemes in which qubits are encoded in long-lived nuclear spin states, and the metastable electronic states of these species are used for manipulation and readout of the qubits. Here we discuss a variant of these schemes, in which gate operations are performed in nuclear-spin-dependent optical lattices, formed by near-resonant coupling to the metastable excited state. This provides an alternative to a previous scheme [A. J. Daley, M. M. Boyd, J. Ye, and P. Zoller, Phys. Rev. Lett 101, 170504 (2008)], which involved independent lattices for different electronic states. As in the previous case, we show how existing ideas for quantum computing with Alkali atoms such as entanglement via controlled collisions can be freed from important technical restrictions. We also provide additional details on the use of collisional losses from metastable states to perform gate operations via a lossy blockade mechanism.

11 Pages, 7 Figures

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Cited by in corpus (20)

• Alkaline earth atoms in optical tweezers
• 2000-times repeated imaging of strontium atoms in clock-magic tweezer arrays
• Creating State-Dependent Lattices for Ultracold Fermions by Magnetic Gradient Modulation
• Production of quantum degenerate strontium gases: Larger, better, faster, colder
• Quantum Computing and Quantum Simulation with Group-II Atoms
• State-dependent optical lattices for the strontium optical qubit
• Quantum logic and entanglement by neutral Rydberg atoms: methods and fidelity
• Cavity-enhanced optical lattices for scaling neutral atom quantum technologies to higher qubit numbers
• Fast and scalable quantum information processing with two-electron atoms in optical tweezer arrays
• Revealing quantum statistics with a pair of distant atoms
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• Quantum Criticality and Population Trapping of Fermions by Non-Equilibrium Lattice Modulations
• An extended-cavity diode laser at 497 nm for laser cooling and trapping of neutral strontium
• Rydberg quantum computation with nuclear spins in two-electron neutral atoms
• Accelerating Quantum Relaxation via Temporary Reset: A Mpemba-Inspired Approach
• Fermionic correlation functions from randomized measurements in programmable atomic quantum devices
• A continuum of compass spin models on the honeycomb lattice
• Effective multi-body SU($N$)-symmetric interactions of ultracold fermionic atoms on a 3-D lattice
• Cyclotron Dynamics of a Kondo Singlet in a Spin-Orbit-Coupled Alkaline-Earth Atomic Gas
• Tunable critical supercurrent and spin-asymmetric Josephson effect in superlattices