Sub-kHz excitation lasers for Quantum Information Processing with Rydberg atoms

Abstract

Quantum information processing using atomic qubits requires narrow linewidth lasers with long-term stability for high fidelity coherent manipulation of Rydberg states. In this paper, we report on the construction and characterization of three continuous-wave (CW) narrow linewidth lasers stabilized simultaneously to an ultra-high finesse Fabry-Perot cavity made of ultra-low expansion (ULE) glass, with a tunable offset-lock frequency. One laser operates at 852~nm while the two locked lasers at 1018~nm are frequency doubled to 509~nm for excitation of ${}^{133}$Cs atoms to Rydberg states. The optical beatnote at 509~nm is measured to be 260(5)~Hz. We present measurements of the offset between the atomic and cavity resonant frequencies using electromagnetically induced transparency (EIT) for high-resolution spectroscopy on a cold atom cloud. The long-term stability is determined from repeated spectra over a period of 20 days yielding a linear frequency drift of $\sim 1$~Hz/s.

13 pages, 6 figures

References in corpus (13)

• 1.5 $\mu$m lasers with sub 10 mHz linewidth
• Cooperative atom-light interaction in a blockaded Rydberg ensemble
• A Fermi-degenerate three-dimensional optical lattice clock
• Sub-Hz line width diode lasers by stabilization to vibrationally and thermally compensated ULE Fabry-Perot cavities
• Tackling Systematic Errors in Quantum Logic Gates with Composite Rotations
• Spatially Resolved Excitation of Rydberg Atoms and Surface Effects on an Atom Chip
• Laser frequency stabilization to highly excited state transitions using electromagnetically induced transparency in a cascade system
• Ultra-stable laser with average fractional frequency drift rate below $5\times 10^{-19}/\mathrm{s}$
• A blueprint for fault-tolerant quantum computation with Rydberg atoms
• Measurement and numerical calculation of Rubidium Rydberg Stark spectra
• A Simple, Versatile Laser System for the Creation of Ultracold Ground State Molecules
• A medium-finesse optical cavity for the stabilization of Rydberg lasers
• A versatile, high-power 460nm laser system for Rydberg excitation of ultracold potassium

Cited by in corpus (15)

• Quantum simulation and computing with Rydberg-interacting qubits
• Probing 10 μK stability and residual drifts in the cross-polarized dual-mode stabilization of single-crystal ultrahigh-Q optical resonators
• Quantum logic and entanglement by neutral Rydberg atoms: methods and fidelity
• Demonstration of a Quantum Gate using Electromagnetically Induced Transparency
• The Robustness of a Collectively Encoded Rydberg Qubit
• Simultaneous multi-band radio-frequency detection using high-orbital-angular-momentum states in a Rydberg-atom receiver
• Demonstration of weighted graph optimization on a Rydberg atom array using local light-shifts
• A self-locking Rydberg atom electric field sensor
• Effect of laser frequency fluctuation on the decay rate of Rydberg coherence
• Continuous broadband Rydberg receiver using AC Stark shifts and Floquet States
• Pound-Drever-Hall locking scheme free from Trojan operating points
• A simple, powerful diode laser system for atomic physics
• New standard magnetic field values determined by cancellations of ${}^{85}\text{Rb}$ and ${}^{87}\text{Rb}$ atomic vapors $5{}^2{S}_{1/2}\to 6{}^2{P}_{1/2,3/2}$ transitions
• Transition cancellations of ${}^{87}$Rb and ${}^{85}$Rb atoms in a magnetic field setting new standards
• High-fidelity multiqubit Rydberg gates via two-photon adiabatic rapid passage