7 papers
Microwave Power-to-Frequency Transduction via Injection Pulling of a Self-Sustained Oscillator for Rydberg Superheterodyne Sensing
Darmindra Arumugam
A Rydberg superheterodyne sensing architecture is demonstrated in which a self-sustained oscillator (SSO) serves as a dynamically perturbed local oscillator (LO) for microwave dete…
Polarization-Aware DoA Detection Relying on a Single Rydberg Atomic Receiver
Yuanbin Chen, Chau Yuen, Darmindra Arumugam +3
A polarization-aware direction-of-arrival (DoA) detection scheme is conceived that leverages the intrinsic vector sensitivity of a single Rydberg atomic vapor cell to achieve quant…
Rydberg-State Hopping in a Wavemeter-Locked Dissipative Time-Crystal System
Darmindra Arumugam
Rydberg-state hopping is demonstrated in a wavemeter-locked two-photon rubidium system (Rb D2 probe at 780 nm and 480 nm coupler), enabling rapid and repeatable switching between t…
Stabilization of Rydberg Dissipative Time Crystals Using a Scanning Fabry Perot Interferometer Transfer Lock
Darmindra Arumugam, Brook Feyissa
Stabilization of laser frequencies is critical for sensitive Rydberg measurements, including in applications such as dissipative time crystal (DTC) dynamics, yet conventional appro…
Injection locking of Rydberg dissipative time crystals
Darmindra Arumugam
Non-equilibrium Rydberg gases exhibit exotic many-body phases stabilized by the interplay of coherent interactions and dissipation. Strong Rydberg interactions drive sustained limi…
Stark-modulated Rydberg dissipative time crystals at room-temperature applied to sub-kHz electric-field sensing
Darmindra Arumugam
Out-of-equilibrium Rydberg gases exhibit emergent many-body phases due to mode competition. Sustained limit cycle oscillations (OSC) emerge when driven by B-fields at room-temperat…