High-sensitive measurement of radio-frequency (RF) electric field is available via the electromagnetically induced transparency (EIT) effect Rydberg atom at room-temperature, which has been developed to be a promising atomic RF receiver. In this Letter, we investigate credibility digital communication quantum-based antenna over entire continuously tunable RF-carrier. Our experiment shows that rate 500 kbps performs reliably within bandwidth 200 MHz carrier 10.22 GHz and bit error (BER)...

We report on a theoretical study and experimental characterization of coherent population trapping (CPT) resonances in buffer gas-filled vapor cells with push-pull optical pumping (PPOP) Cs D1 line. point out that the interaction scheme is identical to so-called lin per polarization scheme. Expressions relevant dark states, as well absorption, are reported. The setup based combination distributed feedback (DFB) diode laser, pigtailed intensity Mach-Zehnder electro-optic modulator (MZ EOM)...

Atomic clocks based on coherent population trapping (CPT) are of great interest for portable applications, due to their high performance, low power requirements, and potential miniaturization. Slow frequency drift, however, limits holdover ability long time scales. This study reports a CPT clock that minimizes long-term with fractional stability $3\ifmmode\times\else\texttimes\fi{}{10}^{-13}$ over the span an hour---ten times as good previous clocks. After successful shrinking laser-cooling...

The grating magneto-optical trap (GMOT) is a promising approach for miniaturizing cold-atom systems. We demonstrated real-time parameter optimization and drift-mitigation method GMOT system based on Bayesian learning. In remarkable short convergence period, optimal numbers of cold atoms reached up to 7.7 × 106, which was nearly four times better than with manual optimization. parameters included not only physical but also mechanical that can control the critical optical alignment. results...

In this study, we demonstrate the direct measurement of a microwave (MW) magnetic field through detection atomic Rabi resonances with Cs vapor cells in free-space low-Q cavity. The line shape (amplitude and linewidth) detected is investigated versus several experimental parameters such as laser intensity, cell buffer gas pressure, length. specially designed cavity creates suitable MW environment allowing easy testing different distinct properties. Obtained results are analyzed to optimize...

The coherent population trapping (CPT) atomic clock is very promising for use in nextgeneration spaceborne applications owing to its compactness and high performance.In this paper, we propose implement a CPT based on the direct modulation of large-modulation-bandwidth narrow-linewidth distributed Bragg reflector laser, which replaces usually used external bulk modulator high-performance clock.Our method retains performance while significantly reducing size.Using highly compact bichromatic...

Herein, a microfabricated millimeter-level vapor alkali cell with high hermeticity is fabricated through wet etching and single-chip anodic bonding process. The cell, containing Rb N2, was investigated in coherent population trapping (CPT) setup for the application of chip-scale atomic clock (CSAC). contrast CPT resonance up to 1.1% within only 1 mm length light interacting atom. effects some critical external parameters on resonance, such as laser intensity, temperature, buffer gas...

The grating-based magneto-optical trap (GMOT) is a promising approach for miniaturizing cold-atom systems. However, the power consumption of GMOT system dominates its feasibility in practical applications. In this study, we demonstrated based on planar elements that can operate with low consumption. A high-diffraction-efficiency grating chip was used to cool atoms single incident beam. coil designed and fabricated nested architecture. chips were adapted passive pump vacuum chamber, up 10 6...

Highly excited Rydberg atoms in a room-temperature vapor cell are promising for developing radio-frequency (RF) electric field (E-field) sensor and relevant measurement standards with high accuracy sensitivity. The all-optical sensing approach is based on electromagnetically-induced transparency Autler-Townes splitting induced by the RF E-field. Systematic investigation of uncertainty great importance national standard. presence dielectric containing alkali changes magnitude, polarization,...

We describe a microwave (MW) magnetic-field detection technique based on the Rabi resonance of Cs-buffer gas vapor cell. Inside cell, alkali atoms interact with MWs radiated from an antenna through open-ended rectangular waveguide. obtained line shape, which determines precisely frequency MW magnetic field phase modulation frequency. For various cells, detailed characterization several experimental parameters and theoretical analysis were performed. The optimal laser intensity cell...

Coherent population trapping (CPT) resonance signals have promise in a wide range of applications involving precision sensing. Generally, the CPT phenomenon occurs three-level Λ system with bichromatic phase-coherent light fields. We theoretically and experimentally studied an Rb vapor-cell-based atomic optical fields external microwave (MW) field simultaneously. In such mixing scheme, coherence ground states could be controlled either by Rabi frequency or relative phase between MW field....

The highly-excited Rydberg states are with a unique property of radio-frequency (RF) resonance, and atoms at room temperature promising for developing broadband RF electric field sensor relevant metrology standards. In this paper, the working mechanism an atomic amplitude-modulation(AM) radio receiver is investigated in detail, various factors affecting communication quality discussed. modulation signal can be directly retrieved by measuring transmission probe laser resonance rubidium D2...

The present Rabi resonance microwave sensing technique cannot fully describe the magnetic field strength distribution due to signal detection method. Here, we propose an alternative resonance-based imaging using a digital micromirror device and alkali atomic cell. experimental results well of quantitatively agree with absorption results. This can also be used as method analyze measure relaxation rate in vapor cell offers SI-traceable approach for field. Its simple architecture holds great...

MoS 2 -anode-based RIBs and CIBs are innovative batteries with high theoretical capacity rate capacity.

We experimentally investigated Rabi resonance-based continuously frequency-tunable microwave (MW) magnetic field detection using a single hybrid vapor cell filled with cesium and rubidium atoms. The multispecies atomic systems, their tunable abilities in transition frequencies, enabled this sensing head to cover broader detectable MW scope compared the use of metal atom. Here, we demonstrated simultaneous observation resonance signals 85Rb, 87Rb, 133Cs same cell. Using an feasible static (DC...

This article reports on the development and short-term fractional frequency stability of a continuous-regime (CW) Cs vapor cell atomic clock based coherent population trapping (CPT). The push-pull optical pumping technique is used to increase number atoms that participate transition, yielding typical CPT resonance contrast 25% for linewidth about 450 Hz. measured be 3 x 10-13 τ-1/2 up 100 seconds averaging time, in correct agreement with signal-to-noise ratio limit. mid-term results are...

We present an atom-based approach for determining microwave electric and magnetic fields by using a single rubidium vapor cell in waveguide. For 87Rb cascade three-level system employed our experiment, weak probe laser driving the lower transition, 5S1/2→5P3/2, is first used to measure field based on atomic Rabi resonance. When counter-propagating strong coupling subsequently turned drive Rydberg 5P3/2→67D5/2, same then as electromagnetically induced transparency (EIT) investigating resonant...

In this paper we characterized the lineshapes of Rabi resonances for microwave (MW) magnetic field with cesium vapor cell in free space. The relation between resonance and phase modulation frequency under different experimental parameters are investigated. Based on obtained lineshapes, evaluation has been done Optimal laser intensity temperature our experiment, preliminary analysis results is reported.

The grating-based magneto-optical trap (GMOT) is a promising approach for miniaturizing cold-atom systems. However, the power consumption of GMOT system dominates its feasibility in practical applications. In this study, we demonstrated based on planar elements that can operate with low consumption. A high-diffraction-efficiency grating chip was used to cool atoms single incident beam. coil designed and fabricated nested architecture. chips were adapted passive pump vacuum chamber, up 106...