<?xml version="1.0" encoding="UTF-8"?><item href="/our-faculty/matt-leifer.aspx" dsn="faculty"><email>leifer@chapman.edu</email><image-overwrite><img src="/our-faculty/matthewleifer.jpg" alt="Dr. Matthew Leifer"/></image-overwrite><name-overwrite/><rank-overwrite>Assistant Professor, Program Director for the Faculty of Physics, Co-Program Director of Physics</rank-overwrite><departments-overwrite/><expertise-overwrite/><office-hours-overwrite/><office-location-overwrite><span>Killefer 127</span></office-location-overwrite><scholarly-works-links-overwrite><a href="https://digitalcommons.chapman.edu/do/search/?q=author_lname%3A%22Leifer%22%20AND%20author_fname%3A%22Matthew%22&amp;start=0&amp;context=5695533&amp;sort=date_desc&amp;facet=">Digital Commons</a><br/><span itemprop="scholarships"><a href="https://scholar.google.com/citations?user=v57KfMEAAAAJ&amp;hl=en">Google Scholar</a><br/><a href="https://arxiv.org/a/leifer_m_1.html">arXiv</a></span></scholarly-works-links-overwrite><degrees-overwrite/><bio-overwrite><p><span>I am interested in the quantum information theory and the foundations of quantum theory, and especially in topics at the intersection of the two areas.</span></p>
<p>I am an academic who straddles the line somewhere between mathematics, philosophy, and theoretical physics.  My main interests are in Quantum Information Theory and the Foundations of Quantum Theory.</p>
<p>Since January 2015, I have been an Assistant Professor of Physics at the Schmid College of Science and Technology at Chapman University, and a member of the <a href="/research/institutes-and-centers/quantum-studies/aboutiqs.aspx">Institute for Quantum Studies</a></p>
<p>I received my<span> </span>bachelors<span> </span>degree in Physics with Theoretical Physics from <a title="Manchester Physics and Astronomy" href="http://www.physics.manchester.ac.uk/">The University of Manchester</a> in 1999, followed by a <a title="Cambridge Maths Part III" href="http://www.maths.cam.ac.uk/postgrad/mathiii/">Masters of Advanced Study in Mathematics</a> (Maths Tripos part III) from the <a title="DAMTP, Cambridge" href="http://www.damtp.cam.ac.uk/">Department of Applied Maths and Theoretical Physics</a> at the <a title="Cambridge University" href="http://www.cam.ac.uk/">University of Cambridge</a> in 2000, where I was a member of <a title="Girton College" href="http://www.girton.cam.ac.uk/">Girton College</a>.</p>
<p>I studied for my Ph.D. in the <a title="Mathematics at Bristol University" href="http://www.maths.bris.ac.uk/">School of Mathematics</a> at the <a title="University of Bristol" href="http://www.bris.ac.uk/">Univeristy<span> </span>of Bristol</a>(2000-2003) under the supervision of <a title="Noah Linden's homepage" href="http://www.maths.bris.ac.uk/~manl/">Prof. Noah Linden</a>, where I was a member of the <a title="Bristol Quantum Computing Group" href="http://www.cs.bris.ac.uk/Research/QuantumComputing/">Quantum Computing Group</a>.</p>
<p>After a brief stint as a research assistant at Bristol, I arrived at <a title="Perimeter Institute" href="http://www.perimeterinstitute.ca/">Perimeter Institute</a> as a Postdoctoral Fellow in January 2004, where I worked until September 2006. From October 2006, I was a research associate in<span> </span>the<a title="CQC,Cambridge" href="http://www.qi.damtp.cam.ac.uk/">Centre<span> </span>for Quantum Computation</a> at the <a title="Cambridge University" href="http://www.cam.ac.uk/">University of Cambridge</a> for three months. In January 2007, I arrived back in Waterloo for a second postdoctoral position, in which I was affiliated with the <a title="IQC" href="http://www.iqc.ca/">Institute for Quantum Computing</a> and the <a title="Waterloo Applied Math" href="http://math.uwaterloo.ca/applied-mathematics/">Department of Applied Math</a> at the <a title="University of Waterloo" href="http://www.uwaterloo.ca/">University of Waterloo</a>, and with the<span> </span><a title="Perimeter Institute" href="http://www.perimeterinstitute.ca/">Perimeter Institute</a>. The latter was due to a research grant from<span> </span>the<a title="FQXi" href="http://www.fqxi.org/">Foundational<span> </span>Questions Institute</a>.</p>
<p>Between April 2008 and August 2010, I was on leave of absence from work due to illness, after which I returned to work on a<span> </span>part time<span> </span>basis at <a title="University College London" href="http://www.ucl.ac.uk/">University College London</a> in the <a title="UCL Quantum Information Group" href="http://blogs.ucl.ac.uk/quantum/">Quantum Information Group</a> of the <a title="UCL Physics and Astronomy" href="http://www.phys.ucl.ac.uk/">Physics and Astronomy department</a>. Between December 2011 and August 2013, I was off work again due to illness. From August 2013 to December 2015, I returned to the Perimeter Institute as a<span> </span>long term<span> </span>visitor.</p>
<p>For further information about me, <a href="http://mattleifer.info/CV/MLeiferCV.html">take a look at my CV</a>, or <a href="http://mattleifer.info/CV/MLeiferCV.pdf">download the pdf version</a>. You can also <a href="http://scholar.google.com/citations?user=v57KfMEAAAAJ">view my Google Scholar profile.</a></p></bio-overwrite><scholarly-works-overwrite><div>L. Catani, M. Leifer, G. Scala, D. Schmid, and R. Spekkens, Aspects of the phenomenology of interference that are genuinely nonclassical, Phys. Rev. A, vol. 108, 022207 (2023)</div>
<a href="https://doi.org/10.1103/PhysRevA.108.022207">Read More...</a><br/><br/>
<div>M. Leifer, Uncertainty from the Aharonov–Vaidman identity, Quantum Stud.: Math. Found., vol. 10, pp. 373–397 (2023)</div>
<a href="https://doi.org/10.1007/s40509-023-00301-8">Read More...</a><br/><br/>
<div>L. Catani and M. Leifer, A mathematical framework for operational fine tunings, Quantum vol. 7, 948 (2023)</div>
<a href="https://doi.org/10.22331/q-2023-03-16-948">Read More...</a><br/><br/>
<div>L. Catani, M. Leifer, D. Schmid and R. Spekkens, Why interference phenomena do not capture the essence of quantum theory, Quantum vol. 7, 1119 (2023)</div>
<a href="https://doi.org/10.22331/q-2023-09-25-1119">Read More...</a><br/><br/>
<div>L. Catani, M. Leifer, G. Scala, D. Schmid, and R. Spekkens, What is Nonclassical about Uncertainty Relations? Phys. Rev. Lett. vol. 129, 240401 (2022)</div>
<a href="https://doi.org/10.1103/PhysRevLett.129.240401">Read More...</a><span><br/></span><span><span><br/></span></span>
<div>M. Leifer and C. Duarte, Noncontextuality inequalities from antidistinguishability, Phys. Rev. A, vol. 101, 06211</div>
<a href="https://doi.org/10.1103/PhysRevA.101.062113">Read More...</a><br/><br/>
<div>M. Leifer, Against Fundamentalism, in "What Is Fundamental?", A. Aguirre, B. Foster, Z. Merali (eds.), The Frontiers Collection (Springer), pp. 13-25</div>
<a href="https://doi.org/10.1007/978-3-030-11301-8_3">Read More...</a><br/><br/>
<div>M. Leifer, Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime by Sean Carroll, Physics Today, vol. 72, iss. 12, pp. 5</div>
<a href="https://doi.org/10.1063/PT.3.4366">Read More...</a><br/><br/>
<div>J. Combes, C. Ferrie, M. Leifer and M. Pusey, Why protective measurement does not establish the reality of the quantum state, Quantum Studies: Mathematics and Foundations, vol. 2, number 2, pp. 189-21</div>
<a href="https://doi.org/10.1007/s40509-017-0111-4">Read More...</a><br/><br/>
<div>M. Leifer, QBism: The Future of Quantum Physics by Hans Christian von Baeyer, Physics in Perspective, vol. 19, pp. 76-8</div>
<a href="https://doi.org/10.1007/s00016-017-0196-5">Read More...</a><span><br/></span><span><span><br/></span></span>
<div>M. Leifer and M. Pusey, Is a time symmetric interpretation of quantum theory possible without retrocausality?, Proc. Roy. Soc. A, vol. 473, iss. 2202</div>
<a href="http://rspa.royalsocietypublishing.org/content/473/2202/20160607">Read More...</a><span><span><br/></span></span><span><span><br/></span></span>
<div>M. Leifer, Mathematics is Physics, in "Trick or Truth? The Mysterious Connection Between Physics and Mathematics", A. Aguirre, B. Foster, Z. Merali (eds.), The Frontiers Collection (Springer), pp. 21-40</div>
<a href="https://link.springer.com/chapter/10.1007%2F978-3-319-27495-9_3">Read More...</a><span><span><br/></span></span><span><span><br/></span></span>
<div>M. Leifer, Einstein and the Quantum: The Quest of the Valiant Swabian by A. Douglas Stone, Spontaneous Generations, vol. 8, iss. 1, pp. 105-10</div>
<a href="https://doi.org/10.4245/sponge.v8i1.20940">Read More...</a><br/><br/>
<div>M. Leifer, "It from Bit" and the Quantum Probability Rule, in "It From Bit or Bit From It?", A. Aguirre, B. Foster, Z. Merali (eds.), The Frontiers Collection (Springer) pp. 5-23</div>
<a href="https://link.springer.com/chapter/10.1007%2F978-3-319-12946-4_2">Read More...</a><br/><br/>
<div>M. Pusey and M. Leifer, Logical pre- and post-selection paradoxes are proofs of contextuality, Proceedings of the 12th International Workshop on Quantum Physics and Logic, C. Heunen, P. Selinger, J. Vicary (eds.</div>
<a href="https://arxiv.org/abs/1506.07850v2">Read More...</a><br/><br/>
<div>D. Jennings and M. Leifer, No Return to classical reality, Contemporary Physics, vol. 57, iss. 1, pp. 60-82</div>
<a href="http://dx.doi.org/10.1080/00107514.2015.1063233">Read More...</a><br/><br/>
<div>M. Leifer, Is the Quantum State Real? An Extended Review of Psi-ontology Theorems, Quanta, vol. 3, iss. 1, pp.67-155</div>
<a href="http://dx.doi.org/10.12743/quanta.v3i1.22">Read More...</a><span><br/></span><span><span><br/></span></span>
<div>M. Leifer, Psi-Epistemic Models are Exponentially Bad at Explaining the Distinguishability of Quantum States, Phys. Rev. Lett., vol. 122, iss. 16, 160404</div>
<a href="https://doi.org/10.1103/PhysRevLett.112.160404">Read More...</a><span><span><br/></span></span><span><br/></span><span><br/></span><span><span><br/></span></span><span><span><br/></span></span><span><br/></span><span><br/></span></scholarly-works-overwrite><cv/><media-contact>pr@chapman.edu</media-contact><lecture-requests>leifer@chapman.edu</lecture-requests><phone/><website/></item>