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Organization: Archive Team

BERJAYA

Formed in 2009, the Archive Team (not to be confused with the archive.org Archive-It Team) is a rogue archivist collective dedicated to saving copies of rapidly dying or deleted websites for the sake of history and digital heritage. The group is 100% composed of volunteers and interested parties, and has expanded into a large amount of related projects for saving online and digital history.

History is littered with hundreds of conflicts over the future of a community, group, location or business that were "resolved" when one of the parties stepped ahead and destroyed what was there. With the original point of contention destroyed, the debates would fall to the wayside. Archive Team believes that by duplicated condemned data, the conversation and debate can continue, as well as the richness and insight gained by keeping the materials. Our projects have ranged in size from a single volunteer downloading the data to a small-but-critical site, to over 100 volunteers stepping forward to acquire terabytes of user-created data to save for future generations.

The main site for Archive Team is at archiveteam.org and contains up to the date information on various projects, manifestos, plans and walkthroughs.

This collection contains the output of many Archive Team projects, both ongoing and completed. Thanks to the generous providing of disk space by the Internet Archive, multi-terabyte datasets can be made available, as well as in use by the Wayback Machine, providing a path back to lost websites and work.

Our collection has grown to the point of having sub-collections for the type of data we acquire. If you are seeking to browse the contents of these collections, the Wayback Machine is the best first stop. Otherwise, you are free to dig into the stacks to see what you may find.

The Archive Team Panic Downloads are full pulldowns of currently extant websites, meant to serve as emergency backups for needed sites that are in danger of closing, or which will be missed dearly if suddenly lost due to hard drive crashes or server failures.

Collection: Archive Team: URLs

TIMESTAMPS

The Wayback Machine - https://web.archive.org/web/20240213162030/https://independent.academia.edu/JacobFSherson

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Jacob F. Sherson

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Conference Presentations

Inferring causality from noisy time series data: A test of Convergent Cross Mapping

by Dan Mønster and Jacob F. Sherson

Convergent Cross-Mapping (CCM) has shown high potential to perform causal inference in the absenc... more Convergent Cross-Mapping (CCM) has shown high potential to perform causal inference in the absence of models. We assess the strengths and weaknesses of the method by varying coupling strength and noise levels in coupled logistic maps. We find that CCM fails to infer accurate coupling strength and even causality direction in synchronized time-series and in the presence of intermediate coupling. We find that the presence of noise deterministically reduces the level of cross-mapping fidelity, while the convergence rate exhibits higher levels of robustness. Finally, we propose that controlled noise injections in intermediate-to-strongly coupled systems could enable more accurate causal inferences. Given the inherent noisy nature of real-world systems, our findings enable a more accurate evaluation of CCM applicability and advance suggestions on how to overcome its weaknesses.

Papers

Single-spin addressing in an atomic Mott insulator

Nature, Mar 17, 2011

Squeezing and Entanglement of Density Oscillations in a Bose-Einstein Condensate

Physical Review Letters, Aug 3, 2015

Achieving fast high-fidelity optimal control of many-body dynamics

We demonstrate the efficiency of a recent exact-gradient optimal control methodology by applying ... more We demonstrate the efficiency of a recent exact-gradient optimal control methodology by applying it to a challenging many-body problem described by matrix product states. In contrast to previous, gradient-free, optimization on the same problem yielding maximally 0.7 fidelity, we observe fidelities in the range 0.99-0.9999 and beyond with associated minimal duration estimates displaying a characteristic, exponential fidelity-duration trade-off across several orders of magnitude. Additionally, whereas previously attained control shapes were smooth and monotonic, we identify a hierarchy of sequentially optimal solutions with an increased information-theoretic control complexity. These facilitate nonadiabatic quantum interference pathways using sequential tunneling and phase-imprinting dynamics necessary for high fidelity. The documented performance of the new analytically exact gradients both in theory and numerical practice across the extremes of Hilbert space size asserts wide applic...

Utopian or Dystopian?: using a ML-assisted image generation game to empower the general public to envision the future

Creativity and Cognition, 2021

The rise of digital technologies and Machine Learning (ML)-tools for creative expression brings a... more The rise of digital technologies and Machine Learning (ML)-tools for creative expression brings about novel opportunities for studying creativity and cognition at scale. In this paper, we present a pilot study of crea.blender SDG - an online GAN based image generation game. We designed crea.blender SDG with two goals in mind: The first, to let people create images relating to the United Nations Sustainable Development Goals (SDGs) and through them, engage in large-scale conversations on complex socioscientific problems. The second, as a fun and inspiring gateway for public participation in research, generating data for the creativity and cognition research and design community. Specifically in this pilot, we study and affirm that the design of crea.blender SDG is flexible enough to allow users to create images that express both anxiety and hope for the future; affirm that user generated images express these ideas in ways that are meaningful to people other than the original creator;...

Laughlin-Type Topological Order on a Fractal Lattice with a Local Hamiltonian

Sourav Manna, 2 Callum W. Duncan, 3 Carrie A. Weidner, Jacob F. Sherson, and Anne E. B. Nielsen 4... more Sourav Manna, 2 Callum W. Duncan, 3 Carrie A. Weidner, Jacob F. Sherson, and Anne E. B. Nielsen 4 Max-Planck-Institut für Physik komplexer Systeme, D-01187 Dresden, Germany Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 7610001, Israel Department of Physics, SUPA and University of Strathclyde, Glasgow G4 0NG, United Kingdom Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark

06 06 07 6 v 1 8 J un 2 00 6 Polarization squeezing by optical Faraday rotation

We show that it is possible to generate continuous-wave fields and pulses of polarization squeeze... more We show that it is possible to generate continuous-wave fields and pulses of polarization squeezed light by sending classical, linearly polarized laser light twice through an atomic sample which causes an optical Faraday rotation of the field polarization. We characterize the performance of the process, and we show that an appreciable degree of squeezing can be obtained under realistic physical assumptions.

Student engagement and learning with Quantum Composer

Knowledge of quantum mechanical systems is becoming more important for many science and engineeri... more Knowledge of quantum mechanical systems is becoming more important for many science and engineering students who are looking to join the emerging quantum workforce. To better prepare a wide range of students for these careers, we must seek to develop new tools to enhance our education in quantum topics. We present initial studies on the use of one of these such tools, Quantum Composer, a 1D quantum simulation and visualization tool developed for education and research purposes. In particular, we conducted five think-aloud interviews with students who worked through an exercise using Quantum Composer that focused on the statics and dynamics of quantum states in singleand double-harmonic well systems. Our results show that Quantum Composer helps students to obtain the correct answers to the questions posed, but additional support is needed to facilitate the development of student reasoning behind these answers. In addition, we find that students explore familiar and unfamiliar problem...

A training programme for early-stage researchers that focuses on developing personal science outreach portfolios

Development of outreach skills is critical for researchers when communicating their work to non-e... more Development of outreach skills is critical for researchers when communicating their work to non-expert audiences. However, due to the lack of formal training, researchers are typically unaware of the benefits of outreach training and often under-prioritize outreach. We present a training programme conducted with an international network of PhD students in quantum physics, which focused on developing outreach skills and an understanding of the associated professional benefits by creating an outreach portfolio consisting of a range of implementable outreach products. We describe our approach, assess the impact, and provide guidelines for designing similar programmes across scientific disciplines in the future.

Are strategies in physics discrete? A remote controlled investigation

Bulletin of the American Physical Society, 2017

Achieving fast high-fidelity optimal control of many-body quantum dynamics

Physical Review A

Approximate dynamics leading to more optimal control: Efficient exact derivatives

Physical Review A

Digital Games for Creativity Assessment: Strengths, Weaknesses and Opportunities

Creativity Research Journal

ABSTRACT Creativity assessments should be valid, reliable, and scalable to support various stakeh... more ABSTRACT Creativity assessments should be valid, reliable, and scalable to support various stakeholders (e.g., policy-makers, educators, corporations, and the general public) in their decision-making processes. Established initiatives toward scalable creativity assessments have relied on well-studied standardized tests. Although robust in many ways, most of these tests adopt unnatural and unmotivating environments for expression of creativity, mainly observe coarse-grained snippets of the creative process, and rely on subjective, resource-intensive, human-expert evaluations. This article presents a literature review of game-based creativity assessment and discusses how digital games can potentially address the limitations of traditional testing. Based on an original sample of 127 papers, this article contributes an in-depth review of 16 papers on 11 digital creativity assessment games. Despite the relatively small sample, a wide variety of design decisions are covered. Major findings and recommendations include identifying (1) a disconnect between the potential of scaling up assessment of creativity with the use of digital games, and the actual reach achieved in the examined studies (2) the need for complementary methods such as stealth assessment, algorithmic support and crowdsourcing when designing creativity assessment games, and (3) a need for interdisciplinary dialogs to produce, validate and implement creativity assessment games at scale.

Crowdsourcing human common sense for quantum control

Physical Review Research

Spatial tomography of individual atoms in a quantum gas microscope

Physical Review A

Human Search in a Fitness Landscape: How to Assess the Difficulty of a Search Problem

Complexity

Computational modeling is widely used to study how humans and organizations search and solve prob... more Computational modeling is widely used to study how humans and organizations search and solve problems in fields such as economics, management, cultural evolution, and computer science. We argue that current computational modeling research on human problem-solving needs to address several fundamental issues in order to generate more meaningful and falsifiable contributions. Based on comparative simulations and a new type of visualization of how to assess the nature of the fitness landscape, we address two key assumptions that approaches such as the NK framework rely on: that the NK captures the continuum of the complexity of empirical fitness landscapes and that search behavior is a distinct component, independent from the topology of the fitness landscape. We show the limitations of the most common approach to conceptualize how complex, or rugged, a landscape is, as well as how the nature of the fitness landscape is fundamentally intertwined with search behavior. Finally, we outline...

More than data gatherers: exploring player experience in a citizen science game

Quality and User Experience

We present the results of an exploratory player experience study on the game Quantum Moves, a cit... more We present the results of an exploratory player experience study on the game Quantum Moves, a citizen science game where players move quantum particles to help create a quantum computer. Eight-hundred-and-seventeen players responded to a 13-question exploratory survey constructed to understand how players relate to the game, what are their motivations, and how could the game be improved. We analyzed the data using descriptive statistics and thematic analysis. Specifically, the thematic analysis helped identifying two cross-cutting themes amongst the players: (a) learning and (b) the opportunity to contribute to science. Results indicate that the opportunity to help science, along with game design, game elements, involvement of players with the scientific community, and players’ strategies influence experience. Implications of the particular findings for the research on player experience on citizen science games and development of evaluation methods are discussed.

Spatially-selective in situ magnetometry of ultracold atomic clouds

Journal of Physics B: Atomic, Molecular and Optical Physics

Measurement-enhanced determination of BEC phase transitions

Journal of Physics B: Atomic, Molecular and Optical Physics

Sub-atom shot noise Faraday imaging of ultracold atom clouds

Journal of Physics B: Atomic, Molecular and Optical Physics

Inferring causality from noisy time series data: A test of Convergent Cross Mapping

by Dan Mønster and Jacob F. Sherson

Convergent Cross-Mapping (CCM) has shown high potential to perform causal inference in the absenc... more Convergent Cross-Mapping (CCM) has shown high potential to perform causal inference in the absence of models. We assess the strengths and weaknesses of the method by varying coupling strength and noise levels in coupled logistic maps. We find that CCM fails to infer accurate coupling strength and even causality direction in synchronized time-series and in the presence of intermediate coupling. We find that the presence of noise deterministically reduces the level of cross-mapping fidelity, while the convergence rate exhibits higher levels of robustness. Finally, we propose that controlled noise injections in intermediate-to-strongly coupled systems could enable more accurate causal inferences. Given the inherent noisy nature of real-world systems, our findings enable a more accurate evaluation of CCM applicability and advance suggestions on how to overcome its weaknesses.

Single-spin addressing in an atomic Mott insulator

Nature, Mar 17, 2011

Squeezing and Entanglement of Density Oscillations in a Bose-Einstein Condensate

Physical Review Letters, Aug 3, 2015

Achieving fast high-fidelity optimal control of many-body dynamics

We demonstrate the efficiency of a recent exact-gradient optimal control methodology by applying ... more We demonstrate the efficiency of a recent exact-gradient optimal control methodology by applying it to a challenging many-body problem described by matrix product states. In contrast to previous, gradient-free, optimization on the same problem yielding maximally 0.7 fidelity, we observe fidelities in the range 0.99-0.9999 and beyond with associated minimal duration estimates displaying a characteristic, exponential fidelity-duration trade-off across several orders of magnitude. Additionally, whereas previously attained control shapes were smooth and monotonic, we identify a hierarchy of sequentially optimal solutions with an increased information-theoretic control complexity. These facilitate nonadiabatic quantum interference pathways using sequential tunneling and phase-imprinting dynamics necessary for high fidelity. The documented performance of the new analytically exact gradients both in theory and numerical practice across the extremes of Hilbert space size asserts wide applic...

Utopian or Dystopian?: using a ML-assisted image generation game to empower the general public to envision the future

Creativity and Cognition, 2021

The rise of digital technologies and Machine Learning (ML)-tools for creative expression brings a... more The rise of digital technologies and Machine Learning (ML)-tools for creative expression brings about novel opportunities for studying creativity and cognition at scale. In this paper, we present a pilot study of crea.blender SDG - an online GAN based image generation game. We designed crea.blender SDG with two goals in mind: The first, to let people create images relating to the United Nations Sustainable Development Goals (SDGs) and through them, engage in large-scale conversations on complex socioscientific problems. The second, as a fun and inspiring gateway for public participation in research, generating data for the creativity and cognition research and design community. Specifically in this pilot, we study and affirm that the design of crea.blender SDG is flexible enough to allow users to create images that express both anxiety and hope for the future; affirm that user generated images express these ideas in ways that are meaningful to people other than the original creator;...

Laughlin-Type Topological Order on a Fractal Lattice with a Local Hamiltonian

Sourav Manna, 2 Callum W. Duncan, 3 Carrie A. Weidner, Jacob F. Sherson, and Anne E. B. Nielsen 4... more Sourav Manna, 2 Callum W. Duncan, 3 Carrie A. Weidner, Jacob F. Sherson, and Anne E. B. Nielsen 4 Max-Planck-Institut für Physik komplexer Systeme, D-01187 Dresden, Germany Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 7610001, Israel Department of Physics, SUPA and University of Strathclyde, Glasgow G4 0NG, United Kingdom Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark

06 06 07 6 v 1 8 J un 2 00 6 Polarization squeezing by optical Faraday rotation

We show that it is possible to generate continuous-wave fields and pulses of polarization squeeze... more We show that it is possible to generate continuous-wave fields and pulses of polarization squeezed light by sending classical, linearly polarized laser light twice through an atomic sample which causes an optical Faraday rotation of the field polarization. We characterize the performance of the process, and we show that an appreciable degree of squeezing can be obtained under realistic physical assumptions.

Student engagement and learning with Quantum Composer

Knowledge of quantum mechanical systems is becoming more important for many science and engineeri... more Knowledge of quantum mechanical systems is becoming more important for many science and engineering students who are looking to join the emerging quantum workforce. To better prepare a wide range of students for these careers, we must seek to develop new tools to enhance our education in quantum topics. We present initial studies on the use of one of these such tools, Quantum Composer, a 1D quantum simulation and visualization tool developed for education and research purposes. In particular, we conducted five think-aloud interviews with students who worked through an exercise using Quantum Composer that focused on the statics and dynamics of quantum states in singleand double-harmonic well systems. Our results show that Quantum Composer helps students to obtain the correct answers to the questions posed, but additional support is needed to facilitate the development of student reasoning behind these answers. In addition, we find that students explore familiar and unfamiliar problem...

A training programme for early-stage researchers that focuses on developing personal science outreach portfolios

Development of outreach skills is critical for researchers when communicating their work to non-e... more Development of outreach skills is critical for researchers when communicating their work to non-expert audiences. However, due to the lack of formal training, researchers are typically unaware of the benefits of outreach training and often under-prioritize outreach. We present a training programme conducted with an international network of PhD students in quantum physics, which focused on developing outreach skills and an understanding of the associated professional benefits by creating an outreach portfolio consisting of a range of implementable outreach products. We describe our approach, assess the impact, and provide guidelines for designing similar programmes across scientific disciplines in the future.

Are strategies in physics discrete? A remote controlled investigation

Bulletin of the American Physical Society, 2017

Achieving fast high-fidelity optimal control of many-body quantum dynamics

Physical Review A

Approximate dynamics leading to more optimal control: Efficient exact derivatives

Physical Review A

Digital Games for Creativity Assessment: Strengths, Weaknesses and Opportunities

Creativity Research Journal

ABSTRACT Creativity assessments should be valid, reliable, and scalable to support various stakeh... more ABSTRACT Creativity assessments should be valid, reliable, and scalable to support various stakeholders (e.g., policy-makers, educators, corporations, and the general public) in their decision-making processes. Established initiatives toward scalable creativity assessments have relied on well-studied standardized tests. Although robust in many ways, most of these tests adopt unnatural and unmotivating environments for expression of creativity, mainly observe coarse-grained snippets of the creative process, and rely on subjective, resource-intensive, human-expert evaluations. This article presents a literature review of game-based creativity assessment and discusses how digital games can potentially address the limitations of traditional testing. Based on an original sample of 127 papers, this article contributes an in-depth review of 16 papers on 11 digital creativity assessment games. Despite the relatively small sample, a wide variety of design decisions are covered. Major findings and recommendations include identifying (1) a disconnect between the potential of scaling up assessment of creativity with the use of digital games, and the actual reach achieved in the examined studies (2) the need for complementary methods such as stealth assessment, algorithmic support and crowdsourcing when designing creativity assessment games, and (3) a need for interdisciplinary dialogs to produce, validate and implement creativity assessment games at scale.

Crowdsourcing human common sense for quantum control

Physical Review Research

Spatial tomography of individual atoms in a quantum gas microscope

Physical Review A

Human Search in a Fitness Landscape: How to Assess the Difficulty of a Search Problem

Complexity

Computational modeling is widely used to study how humans and organizations search and solve prob... more Computational modeling is widely used to study how humans and organizations search and solve problems in fields such as economics, management, cultural evolution, and computer science. We argue that current computational modeling research on human problem-solving needs to address several fundamental issues in order to generate more meaningful and falsifiable contributions. Based on comparative simulations and a new type of visualization of how to assess the nature of the fitness landscape, we address two key assumptions that approaches such as the NK framework rely on: that the NK captures the continuum of the complexity of empirical fitness landscapes and that search behavior is a distinct component, independent from the topology of the fitness landscape. We show the limitations of the most common approach to conceptualize how complex, or rugged, a landscape is, as well as how the nature of the fitness landscape is fundamentally intertwined with search behavior. Finally, we outline...

More than data gatherers: exploring player experience in a citizen science game

Quality and User Experience

We present the results of an exploratory player experience study on the game Quantum Moves, a cit... more We present the results of an exploratory player experience study on the game Quantum Moves, a citizen science game where players move quantum particles to help create a quantum computer. Eight-hundred-and-seventeen players responded to a 13-question exploratory survey constructed to understand how players relate to the game, what are their motivations, and how could the game be improved. We analyzed the data using descriptive statistics and thematic analysis. Specifically, the thematic analysis helped identifying two cross-cutting themes amongst the players: (a) learning and (b) the opportunity to contribute to science. Results indicate that the opportunity to help science, along with game design, game elements, involvement of players with the scientific community, and players’ strategies influence experience. Implications of the particular findings for the research on player experience on citizen science games and development of evaluation methods are discussed.

Spatially-selective in situ magnetometry of ultracold atomic clouds

Journal of Physics B: Atomic, Molecular and Optical Physics

Measurement-enhanced determination of BEC phase transitions

Journal of Physics B: Atomic, Molecular and Optical Physics

Sub-atom shot noise Faraday imaging of ultracold atom clouds

Journal of Physics B: Atomic, Molecular and Optical Physics

Games as a Platform for Student Participation in Authentic Scientific Research

Electronic Journal of E Learning, 2014