John Kitching
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View article: Atom-based quantum sensing of electromagnetic fields
Atom-based quantum sensing of electromagnetic fields Open
The spin and electronic degrees of freedom in atomic systems provide sensitive and versatile means for detecting electromagnetic fields, from DC to THz frequencies, with spatial resolutions ranging from the nanoscale to meter scale. Such s…
View article: Sub-Doppler spectroscopy of the strontium intercombination line in a microfabricated vapor cell
Sub-Doppler spectroscopy of the strontium intercombination line in a microfabricated vapor cell Open
We report a 100 kHz linewidth for the 1S0 to 3P1 intercombination line of 88Sr atoms at 689nm in a microfabricated 9x14 x4.4 mm3 vapor cell. This puts an upper bound on the residual gas pressure in the vapor cell of 10 mTorr. The microfabr…
View article: Wavefront Mapping for Absolute Atom Interferometry
Wavefront Mapping for Absolute Atom Interferometry Open
Wavefront distortions are a leading source of systematic uncertainty in light-pulse atom interferom- etry, limiting absolute measurements of gravitational acceleration at the 30 nm/s$^2$ level. Here, we demonstrate in situ spatially resolv…
View article: A chip-scale atomic beam source for non-classical light
A chip-scale atomic beam source for non-classical light Open
Room temperature thermal atoms have proven to be a powerful resource for magnetometry, electrometry, atom-entanglement generation, and robust atomic clocks. Recent efforts have sought to realize compact and highly manufacturable atomic vap…
View article: Next-Generation Chip Scale Atomic Clocks
Next-Generation Chip Scale Atomic Clocks Open
We describe three independent research directions focussed on the development of next-generation chip-scale atomic clocks, which combine small size, low power consumption and manufacturability with high frequency stability. The use of opti…
View article: Sensitivity of a vector atomic magnetometer based on electromagnetically induced transparency
Sensitivity of a vector atomic magnetometer based on electromagnetically induced transparency Open
We present a realization of a magnetic sensor based on electromagnetically induced transparency (EIT) resonances observed in hot Rb vapor using lin$\parallel$lin polarized dichromatic light and evaluate scalar and vector capabilities of th…
View article: Sensitivity of a vector atomic magnetometer based on electromagnetically induced transparency
Sensitivity of a vector atomic magnetometer based on electromagnetically induced transparency Open
We present a realization of a magnetic sensor based on electromagnetically induced transparency (EIT) resonances observed in hot Rb vapor using lin∥lin polarized dichromatic light and evaluate scalar and vector capabilities of the sensor f…
View article: Chip-scale sub-Doppler atomic spectroscopy enabled by a metasurface integrated photonic emitter
Chip-scale sub-Doppler atomic spectroscopy enabled by a metasurface integrated photonic emitter Open
We demonstrate chip-scale sub-Doppler spectroscopy in an integrated and fiber-coupled photonic-metasurface device. The device is a stack of three planar components: a photonic mode expanding grating emitter circuit with a monolithically in…
View article: Laser Offset Stabilization with Chip-Scale Atomic Diffractive Elements
Laser Offset Stabilization with Chip-Scale Atomic Diffractive Elements Open
Achieving precise and adjustable control over laser frequency is an essential requirement in numerous applications such as precision spectroscopy, quantum control, and sensing. In many such applications it is desired to stabilize a laser w…
View article: Wafer-scale fabrication of evacuated alkali vapor cells
Wafer-scale fabrication of evacuated alkali vapor cells Open
We describe a process for fabricating a wafer-scale array of alkali metal vapor cells with low residual gas pressure. We show that by etching long, thin channels between the cells on the Si wafer surface, the residual gas pressure in the e…
View article: Sensitivity of a vector atomic magnetometer based on electromagnetically induced transparency
Sensitivity of a vector atomic magnetometer based on electromagnetically induced transparency Open
We present a realization of a magnetic sensor based on electromagnetically induced transparency (EIT) resonances observed in hot Rb vapor using lin$\parallel$lin polarized dichromatic light and evaluate scalar and vector capabilities of th…
View article: Application of kernel principal component analysis for optical vector atomic magnetometry
Application of kernel principal component analysis for optical vector atomic magnetometry Open
Vector atomic magnetometers that incorporate electromagnetically induced transparency (EIT) allow for precision measurements of magnetic fields that are sensitive to the directionality of the observed field by virtue of fundamental physics…
View article: A chip-scale atomic beam clock
A chip-scale atomic beam clock Open
Atomic beams are a longstanding technology for atom-based sensors and clocks with widespread use in commercial frequency standards. Here, we report the demonstration of a chip-scale microwave atomic beam clock using coherent population tra…
View article: Application of Kernel Principal Component Analysis for Optical Vector Atomic Magnetometry
Application of Kernel Principal Component Analysis for Optical Vector Atomic Magnetometry Open
An unsupervised machine learning algorithm utilizing nonlinear dimensionality reduction has been developed to interface with spectroscopic measurements from an atomic rubidium optical magnetometer. The magnetometer uses Electromagnetically…
View article: Application of Kernel Principal Component Analysis for Optical Vector Atomic Magnetometry
Application of Kernel Principal Component Analysis for Optical Vector Atomic Magnetometry Open
An unsupervised machine learning algorithm utilizing nonlinear dimensionality reduction has been developed to interface with spectroscopic measurements from an atomic rubidium optical magnetometer. The magnetometer uses Electromagneticall…
View article: Application of Kernel Principal Component Analysis for Optical Vector Atomic Magnetometry
Application of Kernel Principal Component Analysis for Optical Vector Atomic Magnetometry Open
An unsupervised machine learning algorithm utilizing nonlinear dimensionality reduction has been developed to interface with spectroscopic measurements from an atomic rubidium optical magnetometer. The magnetometer uses Electromagnetically…
View article: A chip-scale atomic beam clock
A chip-scale atomic beam clock Open
Atomic beams are a longstanding technology for atom-based sensors and clocks with widespread use in commercial frequency standards. Here, we report the demonstration a chip-scale microwave atomic beam clock using coherent population trappi…
View article: A chip-scale atomic beam clock
A chip-scale atomic beam clock Open
Atomic beams are a longstanding technology for atom-based sensors and clocks with widespread use in commercial frequency standards. Here, we report the demonstration a chip-scale microwave atomic beam clock using coherent population trappi…
View article: Flight demonstration of a miniature atomic scalar magnetometer based on a microfabricated rubidium vapor cell
Flight demonstration of a miniature atomic scalar magnetometer based on a microfabricated rubidium vapor cell Open
We have developed an atomic magnetometer based on the rubidium isotope 87Rb and a microfabricated silicon/glass vapor cell for the purpose of qualifying the instrument for space flight during a ride-along opportunity on a sounding rocket. …
View article: Flight demonstration of a miniature atomic scalar magnetometer based on a microfabricated rubidium vapor cell
Flight demonstration of a miniature atomic scalar magnetometer based on a microfabricated rubidium vapor cell Open
Data acquired by the Miniature Absolute Scalar Magnetometer (MASM) on the low-flying sounding rocket of the Twin Rockets to Investigate Cusp Electrodynamics 2 (TRICE-2) mission. The data columns are as follows: epoch time: CDF Epoch Time t…
View article: Flight demonstration of a miniature atomic scalar magnetometer based on a microfabricated rubidium vapor cell
Flight demonstration of a miniature atomic scalar magnetometer based on a microfabricated rubidium vapor cell Open
Data acquired by the Miniature Absolute Scalar Magnetometer (MASM) on the low-flying sounding rocket of the Twin Rockets to Investigate Cusp Electrodynamics 2 (TRICE-2) mission. The data columns are as follows: epoch time: CDF Epoch Time t…
View article: Degenerate two-photon Rydberg atom voltage reference
Degenerate two-photon Rydberg atom voltage reference Open
We implement a DC voltage reference by measuring Stark shifts of cesium Rydberg atoms in a vapor cell. Cesium atoms are excited from the ground state to the 15s state via a degenerate two-photon transition that provides a narrow, Doppler f…
View article: A simple imaging solution for chip-scale laser cooling
A simple imaging solution for chip-scale laser cooling Open
We demonstrate a simple stacked scheme that enables absorption imaging through a hole in the surface of a grating magneto-optical trap (GMOT) chip, placed immediately below a micro-fabricated vacuum cell. The imaging scheme is capable of o…
View article: Electromagnetically induced transparency based Rydberg-atom sensor for quantum voltage measurements
Electromagnetically induced transparency based Rydberg-atom sensor for quantum voltage measurements Open
We investigate the Stark shift in Rydberg rubidium atoms through electromagnetically induced transparency for the measurement of direct current (dc) and 60~Hz alternating current (ac) voltages. This technique has direct applications to ato…
View article: A dual beam photonic wavelength refernce
A dual beam photonic wavelength refernce Open
We present operation of a photonically integrated wavelength reference at 780 nm using a dual beam geometry. The dual beams are generated by a pair of extreme mode converting grating beam expanders that generate a pair of overlapped, count…
View article: A simple imaging solution for chip-scale laser cooling
A simple imaging solution for chip-scale laser cooling Open
International audience
View article: Wafer-level fabrication of alkali vapor cells using in-situ atomic deposition
Wafer-level fabrication of alkali vapor cells using in-situ atomic deposition Open
We demonstrate a new technique for filling mm-scale microfabricated silicon and glass cavities with alkali vapors at the wafer-scale. A single etched silicon wafer contains an array of cavities containing alkali precursor materials offset …
View article: General Methods for Suppressing the Light Shift in Atomic Clocks Using Power Modulation
General Methods for Suppressing the Light Shift in Atomic Clocks Using Power Modulation Open
We show that the light shift in atomic clocks can be suppressed using time\nvariation of the interrogation field intensity. By measuring the clock output\nat two intensity levels, error signals can be generated that simultaneously\nstabili…
View article: Nanoscale Photonic Waveguides: A Chip‐Scale Optical Frequency Reference for the Telecommunication Band Based on Acetylene (Laser Photonics Rev. 14(6)/2020)
Nanoscale Photonic Waveguides: A Chip‐Scale Optical Frequency Reference for the Telecommunication Band Based on Acetylene (Laser Photonics Rev. 14(6)/2020) Open
Lasers stabilized to known transitions between energy levels in well-isolated quantum systems are essential for numerous applications, e.g. in metrology, optical communications, and sensing. In article number 1900414, Uriel Levy, Roy Zektz…