A self-locking Rydberg atom electric field sensor

Abstract

A crucial step toward enabling real-world applications for quantum sensing devices such as Rydberg atom electric field sensors is reducing their size, weight, power, and cost (SWaP-C) requirements without significantly reducing performance. Laser frequency stabilization is a key part of many quantum sensing devices and, when used for exciting non-ground state atomic transitions, is currently limited to techniques that require either large SWaP-C optical cavities and electronics or use significant optical power solely for frequency stabilization. Here, we describe a laser frequency stabilization technique for exciting non-ground state atomic transitions that solves these challenges and requires only a small amount of additional electronics. We describe the operation, capabilities, and limitations of this frequency stabilization technique and quantitatively characterize its performance. We show experimentally that Rydberg electric field sensors using this technique are capable of data collection while sacrificing only 0.1% of available bandwidth for frequency stabilization of noise up to 900 Hz.

Nonlinear Rydberg exciton-polaritons in Cu2O microcavities

“…Prior to the study of Rydberg excitons in solids, significant efforts have been devoted to the research of Rydberg atoms—giant atomic states with valence electrons occupying orbits of high energy excited states (with sizes up to tens of micrometres). Rydberg states have been at the focus of fundamental and applied science in areas of metrology 1 , sensing 2 , 3 , quantum information and simulation 4 – 6 . Their strong long-range dipole–dipole interactions lead to the Rydberg blockade phenomenon 7 – 9 , where the presence of one excited atom prevents the excitation of another in its vicinity, at the same frequency.…”

Dissipative stabilization of high-dimensional GHZ states for neutral atoms

“…In this Letter, our objective is to deterministically prepare a high-dimensional GHZ state by integrating quantum reservoir engineering into a neutral-atom platform which provides a controlled manner for trapping, cooling, and manipulating atoms. [48][49][50][51] This approach converts the decoherence factors, such as atomic spontaneous emission, of the quantum system into valuable resources and operates independently of the preparation of the initial state, which represents a fundamentally distinct scenario from previous preparations of highdimensional GHZ states in linear optical systems and superconducting systems.…”