Neal Solmeyer

Note: Mounting ultra-high vacuum windows with low stress-induced birefringence

We have developed a way to mount ultra-high vacuum windows onto standard ConFlat(®) vacuum systems with very low stress-induced birefringence. Each window is sealed to a stainless steel flange with a compressed indium wire, and that flange is connected to a vacuum chamber with another indium seal. We find that deformation of a standard ConFlat flange during indium sealing dominates the stress on the window, so an extra-rigid flange is needed for minimal birefringence. With this mounting scheme, the typical residual birefringence is Δn = 2.3 × 10(-7) and is unchanged by a 120 °C bake.

A low noise, nonmagnetic fluorescence detector for precision measurements.

We have built a fluorescence imaging system with a nonmagnetic front end photodiode array (PDA) located inside a magnetically shielded science region. The PDA is connected by a bundle of 2 m long mini-coaxial cables to a set of external bootstrapped amplifiers with 10(7) Ω trans-impedance and a peak light-equivalent spectral noise density of 2.0 pW∕√Hz in a 150 kHz bandwidth. The detector is being used for a cold atom electron electric dipole moment search experiment.

High teleportation rates using cold-atom-ensemble-based quantum repeaters with Rydberg blockade

We present a simplified version of a repeater protocol in a cold neutral-atom ensemble with Rydberg excitations optimized for two-node entanglement generation and describe a protocol for quantum teleportation. Our proposal draws from previous proposals [Zhao, {sl et al.}, Phys. Rev. A {bf 81}, 052329 (2010)] and [Han, {sl et al.} Phys. Rev. A {bf 81}, 052311 (2010)] who described efficient and robust protocols for long-distance entanglement with many nodes. Using realistic experimental values we predict an entanglement generation rate of

Absolute polarization measurement using a vector light shift.

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Measuring Microwaves via Absorption and Dispersion in Rydberg Atoms

25 Hz and teleportation rate of

Long-distance quantum networks using ultra-cold atoms

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Low Noise Quantum Frequency Conversion from Rb Wavelengths to Telecom O-band

5 Hz. Our predicted rates match the current state of the art experiments for entanglement generation and teleportation between quantum memories. With improved efficiencies we predict entanglement generation and teleportation rates of

High teleportation rates using Rydberg-based quantum repeaters

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Sensitive absolute polarization measurement using vector light shifts in cold atoms

7.8 kHz and

Measurement of small vector light shifts for an eEDM search

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