John E. Bowers
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View article: Integrated magneto-optic-based magnetometer: classical and quantum limits
Integrated magneto-optic-based magnetometer: classical and quantum limits Open
Magnetic field sensors with high sensitivity and spatial resolution have profoundly impacted diverse applications ranging from geopositioning and navigation to medical imaging, materials science, and space exploration. However, the use of …
View article: Integrated magneto-optic based magnetometer: classical and quantum limits
Integrated magneto-optic based magnetometer: classical and quantum limits Open
Magnetic field sensors with high sensitivity and spatial resolution have profoundly impacted diverse applications ranging from geo-positioning and navigation to medical imaging, materials science, and space exploration. However, the use of…
View article: Integrated magneto-optic based magnetometer: classical and quantum limits
Integrated magneto-optic based magnetometer: classical and quantum limits Open
Magnetic field sensors with high sensitivity and spatial resolution have profoundly impacted diverse applications ranging from geo-positioning and navigation to medical imaging, materials science, and space exploration. However, the use of…
View article: Ultrabroadband on-chip photonics for full-spectrum wireless communications
Ultrabroadband on-chip photonics for full-spectrum wireless communications Open
The forthcoming sixth-generation and beyond wireless networks are poised to operate across an expansive frequency range—from microwave, millimetre wave to terahertz bands—to support ubiquitous connectivity in diverse application scenarios …
View article: Multicolor interband solitons in microcombs
Multicolor interband solitons in microcombs Open
In microcombs, solitons can drive non-soliton-forming modes to induce optical gain. Under specific conditions, a regenerative secondary temporal pulse coinciding in time and space with the exciting soliton pulse will form at a new spectral…
View article: Separable integrated frequency control of a microcomb
Separable integrated frequency control of a microcomb Open
The revolutionary impact of optical frequency combs in fields as diverse as timekeeping and spectroscopy hinges on a way to independently control comb line spacing and spectral position. However, achieving such control in microcombs remain…
View article: Efficient and wavelength-tunable second-harmonic generation toward the green gap
Efficient and wavelength-tunable second-harmonic generation toward the green gap Open
Achieving compact and efficient visible laser sources is crucial for a wide range of applications. However, traditional semiconductor laser technology faces difficulties in producing high-brightness green light, leaving a “green gap” in wa…
View article: Sub-hertz-linewidth hybrid-integrated laser for isolator-free silicon photonics
Sub-hertz-linewidth hybrid-integrated laser for isolator-free silicon photonics Open
This work presents a hybrid-integrated external-cavity laser with a 0.45 Hz Lorentzian linewidth and exceptional feedback tolerance of up to −8.1dB, enabling isolator-free photonic integrated circuits. Unlike current high-Q locking configu…
View article: Increasing single-photon production with cavity-QED
Increasing single-photon production with cavity-QED Open
A study was performed to determine the extent cavity enhancement may increase single-photon production while maintaining single-photon purity. It was found that certain combinations of cavity lifetime and light-matter coupling strength can…
View article: Pockels laser directly driving ultrafast optical metrology
Pockels laser directly driving ultrafast optical metrology Open
The invention of the laser unleashed the potential of optical metrology, leading to numerous advancements in modern science and technology. This reliance on lasers, however, also introduces a bottleneck for precision optical metrology, as …
View article: Dispersive-wave-agile optical frequency division
Dispersive-wave-agile optical frequency division Open
The remarkable frequency stability of resonant systems in the optical domain (optical cavities and atomic transitions) can be harnessed at frequency scales accessible by electronics using optical frequency division. This capability is revo…
View article: Near-visible integrated soliton microcombs with detectable repetition rates
Near-visible integrated soliton microcombs with detectable repetition rates Open
Integrated soliton microcombs benefit a wide range of conventional comb applications through their compactness and scalability. And applications such as optical clocks and biosensing have driven interest in their operation at wavelengths a…
View article: Efficient and wavelength-tunable second-harmonic generation towards the green gap
Efficient and wavelength-tunable second-harmonic generation towards the green gap Open
Achieving compact and efficient visible laser sources is crucial for a wide range of applications. However traditional semiconductor laser technology faces difficulties in producing high-brightness green light, leaving a green gap in wavel…
View article: Radiation-resilient InAs quantum dot lasers
Radiation-resilient InAs quantum dot lasers Open
Displacement damage from particle radiation increases the threshold current of semiconductor lasers, impeding the deployment of photonic systems in harsh radiation environments. Replacing conventional quantum well (QW) gain regions with qu…
View article: Improving optical coupling in monolithically integrated lasers on silicon by selective area growth
Improving optical coupling in monolithically integrated lasers on silicon by selective area growth Open
The direct growth of III-V lasers on silicon has the potential to allow for low-cost production of silicon photonic integrated circuits on a 300 mm wafer-scale. However, coupling loss severely limits the performance in current implementati…
View article: Down-converted photon pairs in a high-Q silicon nitride microresonator
Down-converted photon pairs in a high-Q silicon nitride microresonator Open
Entangled photon pairs from spontaneous parametric down-conversion (SPDC) 1 are central to many quantum applications 2–6 . SPDC is typically performed in non-centrosymmetric systems 7 with an inherent second-order nonlinearity ( χ (2) ) 8–…
View article: Versatile Chip-Scale Platform for High-Rate Entanglement Generation Using an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mrow><mml:mi>Al</mml:mi><mml:mi>Ga</mml:mi><mml:mi>As</mml:mi></mml:mrow></mml:math> Microresonator Array
Versatile Chip-Scale Platform for High-Rate Entanglement Generation Using an Microresonator Array Open
Integrated photonic microresonators have become an essential resource for generating photonic qubits for quantum information processing, entanglement distribution and networking, and quantum communications. The pair-generation rate is enha…
View article: Integrated mode-hop-free tunable lasers at 780 nm for chip-scale classical and quantum photonic applications
Integrated mode-hop-free tunable lasers at 780 nm for chip-scale classical and quantum photonic applications Open
In the past decade, remarkable advances in integrated photonic technologies have enabled table-top experiments and instrumentation to be scaled down to compact chips with significant reduction in size, weight, power consumption, and cost. …
View article: Investigating the optical degradation of InAs quantum dot lasers on silicon through combined electro-optical characterization and gain measurements
Investigating the optical degradation of InAs quantum dot lasers on silicon through combined electro-optical characterization and gain measurements Open
We evaluate the degradation of 1.3 µ m InAs quantum-dot laser diodes epitaxially grown on silicon. For the first time, the optical degradation mechanisms are investigated by evaluating the variations in the gain spectra measured during a c…
View article: Photon-pair generation via down-conversion in III-V semiconductor microrings: Modal dispersion and quasi-phase-matching
Photon-pair generation via down-conversion in III-V semiconductor microrings: Modal dispersion and quasi-phase-matching Open
We explore how III-V semiconductor microring resonators can efficiently generate photon pairs and squeezed vacuum states via spontaneous parametric down-conversion by utilizing their built-in quasi phase matching and modal dispersion. We p…
View article: A Versatile Chip-Scale Platform for High-Rate Entanglement Generation using an AlGaAs Microresonator Array
A Versatile Chip-Scale Platform for High-Rate Entanglement Generation using an AlGaAs Microresonator Array Open
Integrated photonic microresonators have become an essential resource for generating photonic qubits for quantum information processing, entanglement distribution and networking, and quantum communications. The pair generation rate is enha…
View article: Improving Optical Coupling in Monolithically Integrated Lasers on Silicon by Selective Area Growth
Improving Optical Coupling in Monolithically Integrated Lasers on Silicon by Selective Area Growth Open
The direct growth of III-V lasers on silicon has the potential to allow for low-cost production of silicon photonic integrated circuits on a 300 mm wafer-scale. However, coupling loss severely limits the performance in current implementati…
View article: A photonic integrated circuit for heterogeneous second harmonic generation
A photonic integrated circuit for heterogeneous second harmonic generation Open
Heterogeneous integration of GaAs-based lasers with frequency doubling waveguides presents a clear path to scalable coherent sources in the so-called green gap, yet frequency doubling systems have so far relied on separately manufactured l…
View article: Visible-Telecom Entangled-Photon Pair Generation with Integrated Photonics: Guidelines and a Materials Comparison
Visible-Telecom Entangled-Photon Pair Generation with Integrated Photonics: Guidelines and a Materials Comparison Open
Correlated photon-pair sources are key components for quantum computing, networking, synchronization, and sensing applications. Integrated photonics has enabled chip-scale sources using nonlinear processes, producing high-rate time-energy …