High-fidelity quantum driving

The ability to accurately control a quantum system is a fundamental requirement in many areas of modern science such as quantum information processing and the coherent manipulation of molecular systems. It is usually necessary to realize these quantum manipulations in the shortest possible time in order to minimize decoherence, and with a large stability against fluctuations of the control parameters. While optimizing a protocol for speed leads to a natural lower bound in the form of the quantum speed limit rooted in the Heisenberg uncertainty principle, stability against parameter variations typically requires adiabatic following of the system. The ultimate goal in quantum control is to prepare a desired state with 100% fidelity. Here we experimentally implement optimal control schemes that achieve nearly perfect fidelity for a two-level quantum system realized with Bose-Einstein condensates in optical lattices. By suitably tailoring the time-dependence of the system's parameters, we transform an initial quantum state into a desired final state through a short-cut protocol reaching the maximum speed compatible with the laws of quantum mechanics. In the opposite limit we implement the recently proposed transitionless superadiabatic protocols, in which the system perfectly follows the instantaneous adiabatic ground state. We demonstrate that superadiabatic protocols are extremely robust against parameter variations, making them useful for practical applications.Comment: 17 pages, 4 figure

Search for photonic signatures of gauge-mediated supersymmetry in 13 TeV pp collisions with the ATLAS detector

A search is presented for photonic signatures, motivated by generalized models of gauge-mediated supersymmetry breaking. This search makes use of proton-proton collision data at √s = 13 TeV corresponding to an integrated luminosity of 36.1 fb −1 recorded by the ATLAS detector at the LHC, and it explores models dominated by both strong and electroweak production of supersymmetric partner states. Experimental signatures incorporating an isolated photon and significant missing transverse momentum are explored. These signatures include events with an additional photon or additional jet activity not associated with any specific underlying quark flavor. No significant excess of events is observed above the Standard Model prediction, and 95% confidence-level upper limits of between 0.083 fb and 0.32 fb are set on the visible cross section of contributions from physics beyond the Standard Model. These results are interpreted in terms of lower limits on the masses of gluinos, squarks, and gauginos in the context of generalized models of gauge-mediated supersymmetry, which reach as high as 2.3 TeV for strongly produced and 1.3 TeV for weakly produced supersymmetric partner pairs

Search for the decay of the Higgs boson to charm quarks with the ATLAS experiment

A direct search for the standard model Higgs boson decaying to a pair of charm quarks is presented. Associated production of the Higgs and Z bosons, in the decay mode ZH→ℓ^{+}ℓ^{-}cc[over ¯] is studied. A data set with an integrated luminosity of 36.1  fb^{-1} of pp collisions at sqrt[s]=13TeV recorded by the ATLAS experiment at the LHC is used. The H→cc[over ¯] signature is identified using charm-tagging algorithms. The observed (expected) upper limit on σ(pp→ZH)×B(H→cc[over ¯]) is 2.7 (3.9_{-1.1}^{+2.1}) pb at the 95% confidence level for a Higgs boson mass of 125 GeV, while the standard model value is 26 fb

Search for high-mass resonances decaying to τν in pp collisions at √s = 13 TeV with the ATLAS detector

A search for high-mass resonances decaying to τ ν using proton-proton collisions at √ s = 13     TeV produced by the Large Hadron Collider is presented. Only τ -lepton decays with hadrons in the final state are considered. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1     fb − 1 . No statistically significant excess above the standard model expectation is observed; model-independent upper limits are set on the visible τ ν production cross section. Heavy W ′ bosons with masses less than 3.7 TeV in the sequential standard model and masses less than 2.2–3.8 TeV depending on the coupling in the nonuniversal G ( 221 ) model are excluded at the 95% credibility level

Search for High-Mass Resonances Decaying to τν in pp Collisions at √s=13 TeV with the ATLAS Detector

A search for high-mass resonances decaying to τν using proton-proton collisions at √s=13 TeV produced by the Large Hadron Collider is presented. Only τ-lepton decays with hadrons in the final state are considered. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb−1. No statistically significant excess above the standard model expectation is observed; model-independent upper limits are set on the visible τν production cross section. Heavy W′ bosons with masses less than 3.7 TeV in the sequential standard model and masses less than 2.2–3.8 TeV depending on the coupling in the nonuniversal G(221) model are excluded at the 95% credibility level

Potilasohje alipaineimulaitteen käytöstä

Tämän opinnäytetyön tarkoituksena oli tuottaa potilasohje alipaineimulaitteen käytöstä Töölön sairaalan plastiikkakirurgisen osaston hoitohenkilökunnalle potilasohjauksen tueksi. Opinnäytetyön tavoitteena oli edistää potilaiden valmiuksia alipaineimulaitteen käytössä kotona. Potilasohjeen tarkoituksena oli antaa tietoa alipaineimulaitteen käytöstä kotona. Alipaineimulaitehoito on yleistynyt hoitomuoto, jonka tehokas hoitotapa edesauttaa haavojen paranemista ja nopeuttaa siten hoitoprosessia. Potilasohjaus on osa hoitoprosessia, joka vaatii jatkuvaa vuorovaikutusta ja hoitohenkilökunnan ammattitaitoa. Kirjallisten potilasohjeiden merkitys kasvaa entisestään kotiutustilanteissa. Opinnäytetyön teoriakehys sisältää tietoa alipaineimuhoidon käytöstä sekä haavanhoidosta. Teorian pohjalta tuotettiin opinnäytetyön tuotoksena syntynyt potilasohje. Potilasohjeen tekemiseen saatiin aineistoa ja palautetta Töölön plastiikkakirurgisen osaston kolme haavahoitajilta sekä osaston hoitohenkilökunnalta arviointilomakkeen kautta. Potilasohje on myös lääketieteellisesti tarkastettu osastonylilääkärin toimesta. Opinnäytetyön aihealue on rajattu koskemaan kannettavia alipaineimulaitteita. Opinnäytetyö tuotettiin toiminnallisena. Opinnäytetyön tuotoksena syntyi potilasohje. Potilasohjeen sisältöä, hyötyä ja ulkoasua arvioitiin käytännössä arviointilomakkeella yhteistyökumppani osastolla. Osastolta saadun rakentavan palautteen myötä potilasohjetta muokattiin lopulliseen muotoon. Käytännössä potilasohje voidaan antaa sekä ennen alipaineimuhoidon aloittamista, että kotiutuessa. Näin potilaalle jää aikaa miettiä mahdollisia kysymyksiä ja hoitohenkilökunta voi käyttää potilasohjetta kotiutumisen runkona. Opinnäytetyön tuotoksena syntynyt potilasohje tulee hyödyntämään plastiikkakirurgisen osaston hoitohenkilökuntaa alipaineimulaitehoito potilaiden potilasohjauksessa. Potilasohjetta on mahdollista käyttää kaikilla osastoilla, joilla alipaineimuhoitoon liittyvää ohjausta annetaan. Potilasohjeen jatkokehittämisehdotuksena on kääntää ohje englanniksi ja ruotsiksi.The purpose of this thesis was to produce a patient guide on how to use Negative Pressure Wound Treatment (NPWT) for the nursing staff of Töölö hospital’s plastic surgery ward to support their patient guidance. The aim of the thesis was to increase patients’ abilities to use Negative Pressure Wound Treatment at home. The purpose of the patient guide was to provide information on using Negative Pressure. The use of the Negative Pressure Wound Treatment has become increasingly common, it is an effective way of treating wounds and thus to speed up the healing process. Patient education is a part of the treatment process, which requires constant interaction and nursing skills. The importance of written patient guidelines increases at discharge from the hospital. The theoretical part of the thesis contains information of the use of NPWT and treating wounds. The patient guide was made based on the theoretical part of the thesis. The information and guidance for the patient guide was received from the wound therapists and from the staff of the Töölö hospital’s plastic surgery ward. The patient guide was also reviewed by the head doctor of the ward. The patient guide was limited to portable treatment devices of NPWT. The thesis was carried out using functional approach. The final product of thesis was a patient guide leaflet. The content, benefits and appearance of the patient guide were evaluated with an evaluation form in cooperation with the ward. Based on the constructive feedback on the patient guide it was modified to its final form. In practice the patient guide can be given before starting the Negative Pressure treatment and at discharge. In this way, the patient has time to think about possible questions and the health care staff can use it as a framework in guiding the patient’s discharge process. The outcome of the thesis is going to support the plastic surgery wards’ staff in the guidance of patients. The patient guide can be used in other wards as well. The development proposal for the patient guide is to translate the instructions into English and Swedish