Quantum Interaction (QI) based on Quantum Theory (QT) is being applied to domains such as artificial intelligence, human language, cognition, information retrieval, biology, political science, economics, organisations and social interaction.

After highly successful previous meetings (QI'2007 at Stanford, QI'2008 at Oxford, QI'2009 at Saarbruecken, QI'2010 at Washington DC), the Fifth International Quantum Interaction Symposium will take place in Aberdeen, UK from 26 to 29 June 2011. 

This symposium will bring together researchers interested in how QT interfaces with or solves problems in non-quantum domains more efficiently. It will also look at how QT can address previously unsolved problems in other fields.

QI'2011 includes a half day tutorial session on 26 June 2011, with a number of leading researchers delivering tutorials on the foundations of QT, the application of QT to human cognition and decision making, and QT inspired semantic information processing.

The keynote speaker will be Christopher Fuchs, Perimeter Institute for Theoretical Physics, Canada.

Call for Papers

We are seeking submission of high-quality and original research papers that have not been previously published and are not under review for another conference or journal. Papers should address one or more of the following broad content areas, but not limited to:

  • Artificial Intelligence (Logic, planning, agents and multi-agent systems)
  • Biological or Complex Systems
  • Cognition and Brain (memory, cognitive processes, neural networks, consciousness)
  • Decision Theory (political, psychological, cultural, organisational, social sciences)
  • Finance and Economics (decision-making, mergers, corporate cultures)
  • Information Processing and Retrieval
  • Language and Linguistics

The post-conference proceedings of QI'2011 will be published by Springer in its Lecture Notes in Computer Science (LNCS) series. Authors will be required to submit a final version 14 days after the conference to reflect the comments made at the conference. We will also consider organizing a special issue for a suitable journal to publish selected best papers.

Important dates

  • 28 March 2011: Abstract submission deadline
  • 1 April 2011: Paper submission deadline
  • 1 May 2011: Notification of acceptance
  • 1 June 2011: Camera-Ready Copy
  • 26 June 2011: Tutorial Session
  • 27 - 29 June 2011: Conference meeting


Authors are invited to submit research papers up to 12 pages. All submissions should be prepared in English using the LNCS template, which can be downloaded from:

Please submit online at:


Keynote Speaker:

Christopher Fuchs

Perimeter Institute for Theoretical Physics
Ontario, Canada

Title: 'Born's Rule as an Empirical Addition to Probabilistic Coherence'


With the help of a certain mathematical structure in quantum information theory, there is a particularly elegant way to rewrite the quantum mechanical Born rule as an expression purely in terms of probabilities.

In this way, one can in principle get rid of complex Hilbert spaces and operators as fundamental entities in the theory. In the place of a quantum state, the new expression uses a probability distribution, and in the place of measurement operators, it uses conditional distributions.

The Born rule thus becomes a story of probabilities going in and probabilities coming out. Going a step further: In the Bayesian spirit of giving equal status to all probabilities - in this case, the ones on both the right and left sides of the Born-rule equation - it indicates that the Born rule should be viewed as a normative condition on probabilities above and beyond Dutch-book coherence.

In opposition to Dutch book coherence, this new normative rule is empirical, rather than purely logical in its origin (and by way of that must encode some of the physical content of quantum theory), but there may be other non-quantum situations that warrant the same or a similar addition to Dutch-book coherence: I make no judgment one way or the other, but I hope that this way of rewriting quantum theory may provide a suggestive new language for some of the non-quantum topics of this meeting.

Christopher A. Fuchs Biography

Christopher A. Fuchs is a Senior Researcher at the Perimeter Institute for Theoretical Physics in Waterloo, Canada and an Adjunct Professor at the University of Waterloo.

Previously, he was a research staff member at Bell Labs in Murray Hill, New Jersey and a Prize Postdoctoral Fellow at the California Institute of Technology. He is the author of over 75 scientific papers, a winner of the 2010 International Quantum Communication Award and currently the Chair of the American Physical Society Topical Group on Quantum Information.

His Cambridge University Press book Coming of Age with Quantum Information started to appear in bookstores around the world.



Provisional Conference Programme

Sunday 26 June

  • 10:15am-6:00pm - Conference Registration
  • 11:00am-12:30pm - Tutorial 1: Comparison of classical and quantum probability theories
  • 12:30pm-1:30pm - Lunch
  • 1:30pm-3:00pm - Tutorial 2: An Introduction to Quantum Cognition
  • 3:00pm-3:30pm - Coffee Break
  • 3:30pm-5:00pm - Tutorial 3: Semantic Vectors: Easy and practical software for building and exploring generalized quantum models
  • 6:30pm-8.30pm - Welcome Reception

Monday 27 June

  • 8:30am-12:00pm - Conference Registration
  • 9:20am-9:30am  - Conference opening
  • 9:30am-10:30am  - Keynote Talk - Christopher Fuchs
  • 10:30am-11:00am - Coffee break
  • 11:00am-12:20pm Session 1: Language

    S1:1. Introducing Scalable Quantum Approaches in Language Representation
    Peter Wittek and Sándor Darányi.

    S1:2. Similarity metrics within a point of view
    Sven Aerts, Kirsty Kitto and Laurianne Sitbon.

    S1:3. Toward a Formal Model of the Shifting Relationship between Concepts and Contexts during Associative Thought
    Tomas Veloz, Liane Gabora, Mark Eyjolfson and Diederik Aerts.
  • 12:30pm-2:00pm Lunch
  • 2:00pm-3:30pm Session 2: Semantic Spaces

    S2:1. A compositional distributional semantics, two concrete constructions, and some experimental evaluations.
    Mehrnoosh Sadrzadeh and Edward Grefenstette.

    S2:2. Finding Schizophrenia's Prozac: Emergent Relational Similarity in Predication Space
    Trevor Cohen, Dominic Widdows, Roger Schvaneveldt and Thomas Rindflesch.

    S2:3 Spectral Composition of Semantic Spaces
    Peter Wittek and Sándor Darányi.
  • 3:30pm-4:00pm Coffee break
  • 4:00pm-5:20pm Session 3: Economics, politics and decision

    S3:1. Dynamic optimization with type indeterminate decision-maker: A theory of multiple-self management
    Ariane Lambert-Mogiliansky and Jerome Busemeyer.

    S3:2. Pseudo-Classical Nonseparability and Mass Politics in Two-Party Systems
    Charles Smith and Christopher Zorn.

    S3:3. A quantum cognition analysis of the Ellsberg paradox
    Diederik Aerts, Bart D'Hooghe and Sandro Sozzo.
  • 6:30pm-9:30pm Conference Banquet


Tuesday 28 June

  • 9:00am-10:20am Session 4: Psychology and cognition

    S4:1. Can Classical Epistemic States Be Entangled?
    Harald Atmanspacher, Thomas Filk and Peter Beim Graben.

    S4:2. Quantum structure in cognition: Why and how concepts are entangled
    Diederik Aerts and Sandro Sozzo.

    S4:3. Options for Testing Temporal Bell Inequalities for Mental Systems
    Harald Atmanspacher and Thomas Filk.
  • 10:20am-10:50am Coffee break
  • 10:50am-12:00pm Poster booster Session (Oral)

    PS:1 A quantum-conceptual explanation of violations of expected utility in economics
    Diederik Aerts, Jan Broekaert, Marek Czachor and Bart D'Hooghe.

    PS:2 On the nature of the human mind: The cognit space theory
    George Economides.

    PS:3 Quantum Phenomenology and Dynamic Co-Emergence
    Christian Flender. 

    PS:4 Envisioning Dynamic Quantum Clustering in Information Retrieval
    Emanuele Di Buccio and Giorgio Maria Di Nunzio.

    PS:5 Contextual Image Annotation and Quantum Theory Inspired Measurement for Integration of Textual and Visual Features
    Leszek Kaliciak, Jun Wang, Dawei Song, Peng Zhang and Yuexian Hou.

    PS:6 MPEG-7 Features in Hilbert Spaces: Querying Similar Images with Linear Superpositions
    Elisa Maria Todarello, Walter Allasia and Mario Stroppiana.
  • 12:00pm-1:30pm Lunch and Poster Session
  • 1:30pm-2:50pm Session 5: Information representation and retrieval

    S5:1. Quantum-like Uncertain Conditionals for Text Analysis
    Alvaro Francisco Huertas Rosero and C. J. van Rijsbergen.

    S5:2. Modelling the activation of words in human memory: The Spreading Activation, Spooky-action-at-a-distance and the entanglement models compared
    David Galea, Peter Bruza, Kirsty Kitto, Douglas Nelson and Cathy McEvoy.

    S5:3. Senses in which Quantum Theory is an Analogy for Information Retrieval and Science
    Sachi Arafat.
  • 2:50pm-3:20pm Coffee break
  • 3:20pm-4:20pm Session 6: Computation and information

    S6:1 A hierarchical sorting oracle
    Luís Tarrataca and Andreas Wichert.

    S6:2 Quantum-like paradigm: from molecular biology to cognitive psychology
    Andrei Khrennikov, Irina Basieva, Massanari Asano, Massanori Ohya, Yoshiharu Tanaka and Ichiro Yamato.

    S6:3 Wave Function Collapse and Quantum Information Theory
    Sergey Mayburov
  • 4:50pm-5:50pm Panel session
  • 5:50pm-6:00pm Conference closing


Wednesday 29 June

  • 9:00am : coach departs at Robert Gordon University Woolmanhill Self Catering Flats
  • 10:30am - 11:30am: Royal Lochnagar Distillery tour
  • 11:30am - 2:00pm: Balmoral Castle tour and lunch
  • 2:00pm-3:30pm: travel back to Aberdeen

Entry fees (for distillery and castle) included but lunch not included in the conference registration fee.


Tutorials (Sunday 26 June)

Tutorial 1: Comparison of classical and quantum probability theories

Andrei Khrennikov

Linnaeus University, Sweden


The following topics will be covered by this tutorial:

  1. Basics of Kolmogorov probability theory; conditional probability, the formula of total probability
  2. Aximomatics of quantum mechanics 
  3. Quantum probability 
  4. Two slit experiment (quantum interference) and violation of the formula of total probability 
  5. Bell's inequality and its violation 
  6. Quantum nonlocality and entanglement 
  7. Nonclassical probabilistic models 
  8. Hyperbolic interference 
  9. Quantum dynamics, master equation, decoherence

Tutorial 2: An Introduction to Quantum Cognition

Peter Bruza

Queensland University of Technology, Australia


Several phenomena in cognitive psychology that have stubbornly resisted traditional modeling techniques are showing promise with a new modeling approach inspired by quantum theory (QT).

Basically two aspects of quantum theory are being leveraged: (1) quantum interference has been employed to better model human decision making and (2) entanglement has been proposed to model cognitive states in a non-separable way. This tutorial will cover how quantum theory is being employed in both cases. Examples will be used throughout in order to illustrate how quantum theory is being applied.

Tutorial participants are assumed to have an elementary background in classic logic (e.g., conjunction, disjunction), classic probability and linear algebra (e.g. matrix multiplication). Furthermore, as much as possible within the time frame, the tutorial will attempt to review relevant concepts from linear algebra (e.g., eigenvectors, projection matrices). Note the tutorial makes no assumption of quantum processes in the brain.

Tutorial 3: Semantic Vectors: Easy and practical software for building and exploring generalized quantum models

Dominic Widdows

Google, USA


Semantic Vectors package, http://semanticvectors.googlecode.com, is a free, easy to use package for building and exploring distributional semantic models. The package is particularly designed for building models from free text corpora, though can be used with other knowledge resources as well. It has been used successfully in several research areas including; natural language processing, knowledge visualization, medical informatics, and automated reasoning and inference. In this tutorial we'll explain how to work with Semantic Vectors:

  • Installing Java, Lucene, and Semantic Vectors - everything you need to get started.
  • Building and searching your first models using an example corpus.
  • Using clustering and visualization to explore results.
  • Directional models - going beyond bag-of-words using permutations to encode word order.
  • Basic quantum operators - negation, disjunction, and (depending on how well we've integrated some ongoing work!) entanglement.

Interested users may want to stick around to play with bilingual models as well, depending on how we're doing for time. The tutorial will be very hands-on - spectators are welcome, but to get the most out of the tutorial please bring a laptop (we'll be sure to arrange wireless internet access beforehand). If you have a favourite electronic text corpus you want to play with, be sure to put it on your machine beforehand. By the end of the tutorial, we should be at a stage where all active participants have built and explored a small range of models, and have realized that furthering their own research using automatically built quantum models is way easier than they had imagined.


Organising Committees

Steering Committee

  • Peter Bruza (Queensland University of Technology, Australia)
  • William Lawless (Paine College, USA)
  • Keith van Rijsbergen (University of Glasgow, UK)
  • Donald Sofge (Naval Research Laboratory, USA)
  • Dominic Widdows (Google, USA)

General Chair

  • Dawei Song (Robert Gordon University, UK)

Programme Committee Chair

  • Massimo Melucci (University of Padua, Italy)

Publicity Chair

  • Sachi Arafat (University of Glasgow, UK)

Proceedings Chair

  • Ingo Frommholz (University of Glasgow, UK)

Local Organization co-Chairs

  • Peng Zhang and Lei Wang (Robert Gordon University, UK)

Program Committee Members

  • Diederik Aerts (Brussels Free University, Belgium)
  • Harald Atmanspacher (Institut für Grenzgebiete der Psychologie, Germany)
  • Sven Aerts (Brussels Free University, Belgium) 
  • Sachi Arafat (University of Glasgow, UK)
  • Peter Bruza (Queensland University of Technology, Australia)
  • Jerome Busemeyer (Indiana University, USA)
  • Bob Coecke (Oxford University, UK)
  • Trevor Cohen (University of Texas, USA)
  • Riccardo Franco (Politencico of Turin, Italy)
  • Ingo Frommholz (University of Bedfordshire, UK)
  • Liane Gabora (University of British Columbia, Canada)
  • Emmanuel Haven (University of Leicester, UK)
  • Andre Khrennikov (Växjö University, Sweden)
  • Kirsty Kitto (Queensland University of Technology, Australia)
  • Ariane Lambert-Mogiliansky (Paris School of Economics, France)
  • William Lawless (Paine College, USA)
  • Massimo Melucci (University of Padua, Italy)
  • Jian-Yun Nie (Université de Montréal, Canada)
  • Dusko Pavlovic (Kestrel Institute, USA)
  • Don Sofge (Naval Research Laboratory, USA)
  • Dawei Song (Robert Gordon University, UK)
  • Keith van Rijsbergen (University of Glasgow, UK )
  • Salvador Venegas-Andraca (Tecnológico de Monterrey, Mexico)
  • Giuseppe Vitiello (Salerno University, Italy)
  • Jun Wang (Robert Gordon University, UK)
  • Dominic Widdows (Google Research, USA)
  • Mingsheng Ying (University of Technology Sydney, Australia)
  • Vyacheslav Yukalov (Joint Institute for Nuclear Research, Romania)