Fast Gates and Mixed-Species Entanglement with Trapped Ions

Fast Gates and Mixed-Species Entanglement with Trapped Ions
Author: Vera M. Schäfer
Publisher: Springer Nature
Total Pages: 161
Release: 2020-03-04
Genre: Computers
ISBN: 3030402851
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Quantum logic gates are the crucial information-processing operation of quantumcomputers. Two crucial performance metrics for logic gates are their precision andspeed. Quantum processors based on trapped ions have always been the touchstonefor gate precision, but have suffered from slow speed relative to other quantum logicplatforms such as solid state systems. This thesis shows that it is possible to acceleratethe logic "clock speed" from kHz to MHz speeds, whilst maintaining a precision of99.8%. This is almost as high as the world record for conventional trapped-ion gates,but more than 20 times faster. It also demonstrates entanglement generation in atime (480ns) shorter than the natural timescale of the ions' motion in the trap, whichstarts to probe an interesting new regime of ion trap physics. In separate experiments, some of the first "mixed-species" quantum logic gates areperformed, both between two different elements, and between different isotopes.The mixed-isotope gate is used to make the first test of the quantum-mechanical Bellinequality between two different species of isolated atoms.

Trapped

Trapped
Author: Michael Northrop
Publisher: Scholastic Inc.
Total Pages: 183
Release: 2011-02-01
Genre: Young Adult Fiction
ISBN: 0545332494
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The day the blizzard started, no one knew that it was going to keep snowing for a week. That for those in its path, it would become not just a matter of keeping warm, but of staying alive. . . .Scotty and his friends Pete and Jason are among the last seven kids at their high school waiting to get picked up that day, and they soon realize that no one is coming for them. Still, it doesn't seem so bad to spend the night at school, especially when distractingly hot Krista and Julie are sleeping just down the hall. But then the power goes out, then the heat. The pipes freeze, and the roof shudders. As the days add up, the snow piles higher, and the empty halls grow colder and darker, the mounting pressure forces a devastating decision. . . .Michael Northrop is the New York Times bestselling author of TombQuest, an epic book and game adventure series featuring the magic of ancient Egypt. He is also the author of Trapped, an Indie Next List Selection, and Plunked, a New York Public Library best book of the year and an NPR Backseat Book Club selection. An editor at Sports Illustrated Kids for many years, he now writes full-time from his home in New York City. Learn more at www.michaelnorthrop.net.

Fast Transverse Beam Instability Caused by Electron Cloud Trapped in Combined Function Magnets

Fast Transverse Beam Instability Caused by Electron Cloud Trapped in Combined Function Magnets
Author: Sergey A. Antipov
Publisher: Springer
Total Pages: 95
Release: 2018-11-01
Genre: Science
ISBN: 3030024083
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This thesis presents profound insights into the origins and dynamics of beam instabilities using both experimental observations and numerical simulations. When the Recycler Ring, a high-intensity proton beam accelerator at Fermi National Accelerator Laboratory, was commissioned, it became evident that the Recycler beam experiences a very fast instability of unknown nature. This instability was so fast that the existing dampers were ineffective at suppressing it. The nature of this phenomenon, alongside several other poorly understood features of the beam, became one of the biggest puzzles in the accelerator community. The author investigated a hypothesis that the instability arises from an interaction with a dense cloud of electrons accompanying the proton beam. He studied the phenomena experimentally by comparing the dynamics of stable and unstable beams, by numerically simulating the build-up of the electron cloud and its interaction with the beam, and by constructing an analytical model of an electron cloud-driven instability with the electrons trapped in combined-function dipole magnets. He has devised a method to stabilize the beam by a clearing bunch, which conclusively revealed that the instability is caused by the electron cloud, trapped in a strong magnetic field. Finally, he conducted measurements of the microwave propagation through a single dipole magnet. These measurements have confirmed the presence of the electron cloud in combined-function magnets.

Trapped!

Trapped!
Author: Robert K. Murray
Publisher: University Press of Kentucky
Total Pages: 360
Release: 2013-04-06
Genre: History
ISBN: 0813143950
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"When Floyd Collins became trapped in a cave in southern Kentucky in early 1925, the sensationalism and hysteria of the rescue attempt generated America's first true media spectacle, making Collins's story one of the seminal events of the century. The crowds that gathered outside Sand Cave turned the rescue site into a carnival. Collins's situation was front-page news throughout the country, hourly bulletins interrupted radio programs, and Congress recessed to hear the latest word. Trapped! is both a tense adventure and a brilliant historical recreation of the past. This new edition includes a new epilogue revealing information about the Floyed Collins story that has come to light since the book was first published.

Trapped

Trapped
Author: JB Schroeder
Publisher: JB Schroeder, LLC
Total Pages: 338
Release: 2022-05-12
Genre: Fiction
ISBN: 1943561168
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They’ll risk everything to save the ones they love… Finally out of hiding, Charlie Hart suddenly has to navigate the real world: living on the grid, partnering in Mitch’s PI business, and worst of all, facing down her abuser in court. She nearly runs away again—but her friend Ian has vanished without a trace, and she needs Mitch’s help to get him back. Mitch Saunders regrets pushing Charlie to join Retrieval, Inc. The Ian Cross investigation is driving them apart, and she refuses to be sidelined when it becomes dangerous. He can't lose someone else he loves—yet this rescue mission could easily cost both their lives—or worse, leave them all trapped. The Retrieval, Inc. Series is gritty, edgy, fast-paced, and emotional romantic suspense! Books can be read stand-alone—but you'll want to start at the beginning and read the whole series. RUNAWAY - Book 1 TRAPPED - Book 2 BLINDED - Book 3 What readers say about TRAPPED: “Wow! What a great romantic thriller. If you can put this book down, you have more self-discipline than I do.” —Ed S. “Lots of action and cling to your armchair suspense.” —Natalie S. “Fast paced, dark and so entertaining this suspenseful romantic thriller kept me wanting to read late into the night!" —Meredith “Action packed drama, mystery, suspense, betrayal and a dose of romance that will keep you intrigued throughout the story."—Romaine “The suspense intensified as the danger became imminent, and I couldn’t stop turning the pages." —Stephanie “Most suspenseful JB Schroeder book yet. I was reading as fast as I could to find out how it might end…I’m looking forward to more heartbreaking suspense surrounding them in the next book! ”—Susan Awards: Top Three Finalist in the 2023 Book Buyers Best Contest for Romantic Suspense! Fifth Place in the 2023 National Excellence in Story Telling Contest for Suspense! Honorable Mention in the Readers’ Favorite 2022 International Book Awards for Romantic Suspense! . . . . . . . Fans of JB Schroeder’s romantic suspense are also reading books by: Lisa Regan, Toni Anderson, Rebecca Zanetti, Debra Webb, Laura Griffin, Tee O'Fallon, Roxanne St. Claire, Lynn Raye Harris, Kat Martin, Lilliana Hart, Blake Pierce, Christie Craig, Janie Crouch, Trish Loye, Charlee James, Barb Warner Deane, Laylea Cross, Diane Benefiel, Misty Evans, Cynthia Eden, Barbara Freethy, Kathleen Brooks, Kelsey Browning, Karen Robards, Alison Kent, Sybil Bartel, Rachel Grant, Debbie Baldwin, Dawn Altieri, Patricia Eddy, Karin Slaughter, Alex Grayson, Morgan James, Karen Rose, Katie Reus, Kylie Brandt, Brenda Novak, Lisa Gardner, Leslie Wolfe, Jemma Westbrook, Mia Kent, Lori Matthews, Adrienne Giordano, Gwen Hernandez, and Ivy Smoak. Topics: romantic suspense, romance action and adventure, romantic thriller, suspense thriller, psychological thriller, shocking twists, fast-paced, edge of your seat, couldn’t put it down, justice served, contemporary romance, psychological elements, crime, mystery and suspense, contemporary romance series, romantic suspense series, starting over, fresh start, new path, love after loss, past threats, workplace romance, working together, gritty romance, real romance, real love, true love, private investigation, undercover investigation, missing persons, abduction, international kidnapping, runaway, victim, disappearance, on the run, woman in hiding, special ops, black ops, undercover ops, Poconos, San Francisco, California, Durango, Mexico, organized crim, happily for now, no cliffhanger, love and loss, strong heroine, independent heroine, runaway, serial killer, disturbed villain, woman in danger, woman in peril, past secrets, past threats, buried secrets, emotional journey, emotional romance, heartfelt romance, emotional journey, romance to make your heart race, award-winning romance, award-winning author, full-length novel, stand alone, willing to take a chance, happily ever after, no cliffhanger, love and loss, friendship, found family, starting over, protective hero, detective, drug cartel, drug lord, abuse, drug abuse, addiction, recovering addict, trust, redemption, Heart racing romantic suspense, emotional romance books, romantic suspense novels, dark romantic suspense, everyday heroes,

Trapped Particles and Fundamental Physics

Trapped Particles and Fundamental Physics
Author: S.N. Atutov
Publisher: Springer Science & Business Media
Total Pages: 308
Release: 2012-12-06
Genre: Science
ISBN: 9401004404
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Fundamental physics with trapped particles (ions, atoms or molecules) rep resents one of the most challenging and promising fields of investigation, with impressive results during this last decade. The use of both particle trapping and laser cooling techniques, together with traditional techniques of atomic physics, represents a powerlul tool of investigation for a wide range of fields. Experiments spanning very high resolution spectroscopy to Bose-Einstein condensation, tests of the Standard Model ofelectroweak interactions to precise mass measurements, detailed analysis of ~ decay to QED tests have been presented by leading scientists who reported the most recent results and discussed the perspectives in the different fields. During the ten working days of the School, 39 lecturers, 6 seminars and two poster sessions have been organized by offering to the attendants a.complete pic ture of the present research status about the new frontiers of atomic physics. L. Caneschi gave a general overview of the Standard Model of electroweak interac tions. He pointed out the achievements and the limits of validity of the model.

Detection of Trapped Antihydrogen

Detection of Trapped Antihydrogen
Author: Richard Hydomako
Publisher: Springer Science & Business Media
Total Pages: 182
Release: 2012-12-14
Genre: Science
ISBN: 3642344844
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In 2010, the ALPHA collaboration achieved a first for mankind: the stable, long-term storage of atomic antimatter, a project carried out a the Antiproton Decelerator facility at CERN. A crucial element of this observation was a dedicated silicon vertexing detector used to identify and analyze antihydrogen annihilations. This thesis reports the methods used to reconstruct the annihilation location. Specifically, the methods used to identify and extrapolate charged particle tracks and estimate the originating annihilation location are outlined. Finally, the experimental results demonstrating the first-ever magnetic confinement of antihydrogen atoms are presented. These results rely heavily on the silicon detector, and as such, the role of the annihilation vertex reconstruction is emphasized.

Trapped by Malays: A Tale of Bayonet and Kris

Trapped by Malays: A Tale of Bayonet and Kris
Author: George Manville Fenn
Publisher: DigiCat
Total Pages: 300
Release: 2022-11-22
Genre: Fiction
ISBN:
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Trapped by Malays: A Tale of Bayonet and Kris by George Manville Fenn is about incorrigible soldier Archibald Maine and the mischief he gets up to in Malaysia. Excerpt: "Oh, bother!" The utterer of these two impatient words threw down a sheet of notepaper from which he had been reading, carefully smoothed out the folds to make it flat, and then, balanced it upon one finger as he sat back in a cane chair with his heels upon the table, gave the paper a flip with his nail and sent it skimming out of the window of his military quarters at Campong Dang, the station on the Ruah River, far up the west coast of the Malay Peninsula."

Trapped Charged Particles and Fundamental Interactions

Trapped Charged Particles and Fundamental Interactions
Author: Habil Klaus Blaum
Publisher: Springer
Total Pages: 199
Release: 2008-11-14
Genre: Science
ISBN: 3540778179
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The development of ion traps has spurred significant experimental activities able to link measurable quantities to the most fundamental aspects of physics. The first chapter sets the scene and motivates the use of ion traps with an in-depth survey of the low-energy electroweak sector of the standard model amenable to precision test. The next parts then introduce and review aspects of the theory, simulation and experimental implementation of such traps. Last but not least, two important applications, namely high resolution mass spectrometry in Penning traps and tests of fundamental physics - such as the CPT theorem - with trapped antiprotons are discussed. This volume bridges the gap between the graduate textbook and the research literature and will assist graduate students and newcomers to the field in quickly entering and mastering the subject matter.

Fundamental Tests of Physics with Optically Trapped Microspheres

Fundamental Tests of Physics with Optically Trapped Microspheres
Author: Tongcang Li
Publisher: Springer Science & Business Media
Total Pages: 135
Release: 2012-11-02
Genre: Science
ISBN: 146146031X
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Fundamental Tests of Physics with Optically Trapped Microspheres details experiments on studying the Brownian motion of an optically trapped microsphere with ultrahigh resolution and the cooling of its motion towards the quantum ground state. Glass microspheres were trapped in water, air, and vacuum with optical tweezers; and a detection system that can monitor the position of a trapped microsphere with Angstrom spatial resolution and microsecond temporal resolution was developed to study the Brownian motion of a trapped microsphere in air over a wide range of pressures. The instantaneous velocity of a Brownian particle, in particular, was studied for the very first time, and the results provide direct verification of the Maxwell-Boltzmann velocity distribution and the energy equipartition theorem for a Brownian particle. For short time scales, the ballistic regime of Brownian motion is observed, in contrast to the usual diffusive regime. In vacuum, active feedback is used to cool the center-of-mass motion of an optically trapped microsphere from room temperature to a minimum temperature of about 1.5 mK. This is an important step toward studying the quantum behaviors of a macroscopic particle trapped in vacuum.