Tribute to David Gregory, Esq.

The Board and Staff of the Maine Law Review dedicate this issue to the memory of Professor David Doliver Gregory, who passed away on December 9, 2000. The Maine legal community and the University of Maine School of Law mourn the loss of our beloved teacher, advocate, and friend. In the collective memory of his students, Professor Gregory will always be remembered for the Socratic genius that he employed so effectively in class; his keen wit, often accompanied by a knowing smile and a twinkle in his eyes; his passion for ferreting out seemingly elusive legal principles; and his compassion and warmth for those he instructed. Perhaps above all, Professor Gregory will be recalled as the archetypal Law Professor that he was. He was the rarest of educators, someone who taught us how to challenge ourselves intellectually, and who demonstrated both in his life and in his teaching that the law not only reaches all facets of society but also touches upon the most fundamental and important aspects of human existence itself. On January 17, 2001 hundreds of his colleagues and students gathered at the First Parish Church in Portland, Maine to celebrate Professor Gregory\u27s life. What follows are the remembrances delivered at the memorial service and two tributes from professional colleagues that give a picture of his life in the courtroom and the classroom

Atomic physics on a 50 nm scale: Realization of a bilayer system of dipolar atoms

Atomic physics has greatly advanced quantum science, mainly due to the ability to control the position and internal quantum state of atoms with high precision, often at the quantum limit. The dominant tool for this is laser light, which can structure and localize atoms in space (e.g., in optical tweezers, optical lattices, 1D tubes or 2D planes). Due to the diffraction limit of light, the natural length scale for most experiments with atoms is on the order of 500 nm or larger. Here we implement a new super-resolution technique which localizes and arranges atoms on a sub-50 nm scale, without any fundamental limit in resolution. We demonstrate this technique by creating a bilayer of dysprosium atoms, mapping out the atomic density distribution with sub-10 nm resolution, and observing dipolar interactions between two physically separated layers via interlayer sympathetic cooling and coupled collective excitations. At 50 nm, dipolar interactions are 1,000 times stronger than at 500 nm. For two atoms in optical tweezers, this should enable purely magnetic dipolar gates with kHz speed

Can the dipolar interaction suppress dipolar relaxation?

Magnetic atoms in a thin layer have repulsive interactions when their magnetic moments are aligned perpendicular to the layer. We show experimentally and theoretically how this can suppress dipolar relaxation, the dominant loss process in spin mixtures of highly magnetic atoms. Using dysprosium, we observe an order of magnitude extension of the lifetime, and another factor of ten is within reach based on the models which we have validated with our experimental study. The loss suppression opens up many new possibilities for quantum simulations with spin mixtures of highly magnetic atoms.Comment: 38 pages, 9 figure

Ultracold Trimer Ion Formation of Rb and K

The cooling of molecules into the ultracold regime allows for high resolution laser spectroscopy that reveals their complex rotational and vibrational structure. As the temperature is lowered towards absolute zero, the kinetic energy of the particles approaches zero, and therefore the Doppler shift approaches zero. With the Doppler shift negligibly small, spectral resolution is now primarily limited by the natural linewidth of the molecular peaks. Further, ultracold temperatures make possible the production of atoms or molecules that will reside in the lowest few states of the system. The high population in a few select states provides stronger and less congested spectra compared to in uncooled systems. Interactions with the system, such as photoassociation, are well defined in ultracold systems and populate select states that are easily observable. With the control allowed by ultracold temperatures we are able to observe quantum mechanical phenomena that are otherwise hidden from view. In this thesis I investigate energetics for reactions forming trimers of ultracold Rb and K and pathways to formation that appear most promising for experimental studies in our current setup

Tribute to David Gregory, Esq.

The Board and Staff of the Maine Law Review dedicate this issue to the memory of Professor David Doliver Gregory, who passed away on December 9, 2000. The Maine legal community and the University of Maine School of Law mourn the loss of our beloved teacher, advocate, and friend. In the collective memory of his students, Professor Gregory will always be remembered for the Socratic genius that he employed so effectively in class; his keen wit, often accompanied by a knowing smile and a twinkle in his eyes; his passion for ferreting out seemingly elusive legal principles; and his compassion and warmth for those he instructed. Perhaps above all, Professor Gregory will be recalled as the archetypal Law Professor that he was. He was the rarest of educators, someone who taught us how to challenge ourselves intellectually, and who demonstrated both in his life and in his teaching that the law not only reaches all facets of society but also touches upon the most fundamental and important aspects of human existence itself. On January 17, 2001 hundreds of his colleagues and students gathered at the First Parish Church in Portland, Maine to celebrate Professor Gregory\u27s life. What follows are the remembrances delivered at the memorial service and two tributes from professional colleagues that give a picture of his life in the courtroom and the classroom

Biddeford and Maine Franco-American Hall of Fame Award recipient

With options to be a college French professor, became a lawyer, mayor, DA & District Court Judg

Internet marketing to children.

This project was an examination of the quality of websites that market to children younger than fourteen. After researching the current laws and concerns of the public, we constructed a questionnaire with which we collected data on a large sample of websites. Analysis of the data allowed us to come to some conclusions about the current state of Internet marketing directed at children. From these findings, we created guidelines and recommendations for Internet marketers to more responsibly market to children

Enhancing the capture velocity of a Dy magneto-optical trap with two-stage slowing

© 2020 American Physical Society. Magneto-optical traps (MOTs) based on the 626-nm, 136-kHz-wide intercombination line of Dy, which has an attractively low Doppler temperature of 3.3μK, have been implemented in a growing number of experiments over the last several years. A challenge in loading these MOTs comes from their low capture velocities. Slowed atomic beams can spread out significantly during free flight from the Zeeman slower to the MOT position, reducing the fraction of the beam captured by the MOT. Here we apply a scheme for enhancing the loading rate of the MOT wherein atoms are Zeeman slowed to a final velocity larger than the MOT's capture velocity and then undergo a final stage of slowing by a pair of near-detuned beams addressing the 421-nm transition directly in front of the MOT. By reducing the free-flight time of the Zeeman-slowed atomic beam, we greatly enhance the slowed flux delivered to the MOT, leading to more than an order-of-magnitude enhancement in the final MOT population