Thermal-dephasing-tolerant generation of Schrödinger cat states with Rydberg dressed blockade

Abstract

Multipartite entangled states involving non-locality are one of the most fascinating characteristics of quantum mechanics. In this work, we propose a thermal-dephasing-tolerant generation of mesoscopic entangled states with Rydberg dressed atoms. We encode logical state on dressed states rather than Rydberg states. Such treatment can increase the lifetime of multipartite entanglement coherence to around 3 times compared to the Rydberg-state-coding one at the same system size, and therefore induce solid fidelities of mesoscopic superposition states generation. The current work theoretically verifies the advantages of using Rydberg dressed states in many-body quantum entanglement, which is helpful for large-scale quantum computation and many-body Rydberg quantum simulation.

10 pages, 10 figures, 1 table

References in corpus (13)

• Quantum Phases of Matter on a 256-Atom Programmable Quantum Simulator
• Observation of mesoscopic crystalline structures in a two-dimensional Rydberg gas
• Quasiclassical calculations of BBR-induced depopulation rates and effective lifetimes of Rydberg nS, nP and nD alkali-metal atoms with n < 80
• High-Fidelity Entanglement and Detection of Alkaline-Earth Rydberg Atoms
• Shortcuts to Adiabaticity for the Quantum Rabi Model: Efficient Generation of Giant Entangled cat States via Parametric Amplification
• Coherent dipole-dipole coupling between two single atoms at a Förster resonance
• Generating Large Cats with Nine Lives: Long-Lived Macroscopically Distinct Superposition States in Atomic Ensembles
• Robust quantum logic in neutral atoms via adiabatic Rydberg dressing
• Nonadiabatic geometric quantum computation with cat qubits via invariant-based reverse engineering
• Resilient quantum gates on periodically driven Rydberg atoms
• Heralded atomic nonadiabatic holonomic quantum computation with Rydberg blockade
• Manipulating complex hybrid entanglement and testing multipartite Bell inequalities in a superconducting circuit
• Dipole-dipole interaction driven antiblockade of two Rydberg atoms

Cited by in corpus (3)

• Giant atoms coupled to waveguide: Continuous coupling and multiple excitations
• Inertial geometric quantum logic gates
• Accelerated Rydberg electromagnetically induced transparency quantum memory via shortcuts to adiabaticity