We demonstrate a Ramsey-type microwave clock interrogating the 6.835 GHz ground-state transition in cold [Formula: see text]Rb atoms loaded from grating magneto-optical trap (GMOT) enclosed an additively manufactured loop-gap resonator cavity. A short-term stability of text] is demonstrated, reasonable agreement with predictions signal-to-noise ratio measured Ramsey fringes. The cavity-grating package has volume text]67 cm[Formula: text], ensuring inherently compact system while use GMOT...

The miniaturization of cold-atom systems brings high accuracy into portable atomic metrology. However, the impact sensors in real-world applications has been limited by overall laser cooling package. This study amalgamates a chip-scale optics setup with microfabricated system to dramatically reduce device size, weight, and power usage. authors use an on-chip Zeeman offset lock for cooling, demonstrate improved atom number afforded new techniques silicon cell fabrication. simplicity,...

Ultracold atoms are crucial for unlocking truly precise and accurate quantum metrology provide an essential platform computing, communication, memories. One of the largest ongoing challenges is miniaturization these devices. Here, we show that typically macroscopic optical lattice architecture at heart many ultraprecise technologies can be realized with a single-input laser beam on same diffractive chip already used to create ultracold atoms. Moreover, this inherently ultrastable enables...

We demonstrate a simple stacked scheme that enables absorption imaging through hole in the surface of grating magneto-optical trap (GMOT) chip, placed immediately below micro-fabricated vacuum cell. The is capable overcoming reduced optical access and scatter associated with this chip-scale platform while further permitting both trapping atoms from single incident laser beam. through-hole used to characterize impact overlap volume GMOT cell, an outlook optimized atom number low systems.

We present an additive-manufactured microwave cavity for a Ramsey-type, double resonance, compact cold-atom clock. Atoms can be laser cooled inside the using grating magneto-optic trap with providing excellent TE011-like mode while maintaining sufficient optical access atomic detection. The features low Q-factor of 360 which conveniently reduces pulling future Despite potential porosity additive-manufacturing process, we demonstrate that is well-suited vacuum. A preliminary clock setup cold...

Abstract A compact platform for cold atoms opens a range of exciting possibilities portable, robust and accessible quantum sensors. In this work, we report on the development cold-atom microwave clock in small package. Our work utilises grating magneto-optical trap high-contrast coherent population trapping lin <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <m:mo>⊥</m:mo> </m:math> $\perp $ polarisation scheme. We optically probe atomic ground-state splitting 87 Rb...

We demonstrate a tuneable, chip-scale wavelength reference to greatly reduce the complexity and volume of cold-atom sensors. A 1 mm optical path length micro-fabricated cell provides an atomic reference, with dynamic frequency control enabled by Zeeman shifting transition through magnetic field generated printed circuit board (PCB) coils. The range laser stabilization system is evaluated used in conjunction improved generation cold atom platforms that traps 4 million 87Rb atoms. scalability...

Ultracold atoms are crucial for unlocking truly precise and accurate quantum metrology, provide an essential platform computing, communication memories. One of the largest ongoing challenges is miniaturization these devices. Here, we show that typically macroscopic optical lattice architecture at heart many ultra-precise technologies can be realized with a single input laser beam on same diffractive chip already used to create ultracold atoms. Moreover, this inherently ultra-stable enables...

Abstract A sample of laser cooled atoms are created inside an additively manufactured loop-gap microwave cavity using a grating magneto-optic trap requiring only single cooling beam. Using Ramsey excitation scheme with free evolution times up to 20 ms and based on the 87 Rb ground-state clock transition, we demonstrate short-term stability 1.5×10 −11 τ −1/2 , averaging down 2×10 −12 after 100 s. The limit is found be dominated by signal noise ratio fringes while for longer timescales...

A low-cost, mass-producible laser-cooling platform would have a transformative effect in the burgeoning field of quantum technologies and wider research atomic sensors. Recent advancements micro-fabrication diffractive optics vacuum apparatus paved way for simple, stackable solution to laser cooling alkali atoms. In this paper we will highlight our recent investigations into chip-scale, cold-atom platform, outlining approach on-chip wavelength referencing, examining imaging atoms planar...

We demonstrate the integration of micro-electro-mechanical-systems (MEMS) scanning mirrors as active elements for local optical pumping ultra-cold atoms in a magneto-optical trap. A pair MEMS steer focused resonant beam through cloud trapped shelved F = 1 ground-state 87 Rb spatially selective fluorescence atom cloud. Two-dimensional control is demonstrated by forming geometrical patterns along imaging axis cold ensemble. Such atomic ensemble with microfabricated mirror could find...

We present a demonstration of cold-atom optical-microwave double resonance (DR) Ramsey clock utilising an additively manufactured loop-gap-resonator cavity and grating magneto-optical trap (GMOT). The use additive manufacturing allows for complex structures, more difficult to produce with traditional machining techniques, while the GMOT architecture significantly simplifies optical system required cool atomic sample. In current single laser is used &lt; 3 &times; 10^{6 87}Rb atoms,...

We present an additive-manufactured microwave cavity for a Ramsey-type, double resonance, compact cold-atom clock. Atoms can be laser cooled inside the using grating magneto-optic trap (GMOT) with providing excellent TE011-like mode while maintaining sufficient optical access atomic detection. The features low Q-factor of 360 which conveniently reduces cavity-pulling future Despite potential porosity additive-manufacturing process, we demonstrate that is well-suited vacuum. A preliminary...

We demonstrate a Ramsey-type microwave clock interrogating the 6.835~GHz ground-state transition in cold \textsuperscript{87}Rb atoms loaded from grating magneto-optical trap (GMOT) enclosed an additively manufactured loop-gap resonator cavity. A short-term stability of $1.5 \times10^{-11} $~$\tau^{-1/2}$ is demonstrated, reasonable agreement with predictions signal-to-noise ratio measured Ramsey fringes. The cavity-grating package has volume $\approx$67~cm\textsuperscript{3}, ensuring...

A fully integrated and mass producible platform for laser cooling has the potential to revolutionize growing field of quantum technologies atomic sensors. Recent advancements in micro-fabrication components at heart cold atom systems have laid foundations amalgamation a simple, stackable solution cooling. In this talk we will highlight our recent progress towards chip-scale, cold-atom platform, outlining approach on-chip wavelength referencing, examining imaging atoms planar stacked device,...

We demonstrate the integration of micro-electro-mechanical-systems (MEMS) scanning mirrors as active elements for local optical pumping ultra-cold atoms in a magneto-optical trap. A pair MEMS steer focused resonant beam through cloud trapped shelved \textit{F}=1 ground-state \textsuperscript{87}Rb spatially-selective fluorescence atom cloud. Two-dimensional control is demonstrated by forming geometrical patterns along imaging axis cold ensemble. Such atomic ensemble with microfabricated...