Institute for Quantum Computing grad receives prestigious Faculty of Science medal
Institute for Quantum Computing (IQC) graduate Dr. Shayan Majidy is one of the recipients of this yearâs W.B. Pearson Medal, awarded by the University of À¶ĘźÊÓÆ”âs Faculty of Science, which honours creative research presented in studentsâ theses.Â
Under the supervision of IQC Faculty Dr. Raymond Laflamme, professor, Department of Physics and Astronomy, Majidyâs research focused on quantum thermodynamicsâspecifically, what happens when scientists lift the assumption that measuring some of a systemâs properties doesnât change its other properties.Â

âAcross physics, there is often an implicit assumption that conserved quantitiesâsuch as energy or number of particlesâcommute with one another. This means we can measure one property without disturbing the other. Like how measuring the temperature of a cup of coffee doesnât change how much coffee is in the cup. In reality, conserved quantities donât necessarily commute. My thesis looked into what happens physically when we lift that assumption.âÂ
-ÌęDr. Shayan Majidy, IQC alumni
Majidy says his PhD thesis contributed to understanding these dynamics, but there are still many open questions.Â
Building tools as fundamental as the microscopeÂ
Majidyâs expertise in quantum information grew out of a happy accident. While an undergraduate student at the University of Guelph, he signed up for a mathematics course and its title was vague enough that he didnât know it focused on quantum information theory.Â
His initial excitement about quantum mechanics â like particles existing in multiple states at once (superposition) and measuring one particle can instantly determine the state of the other, no matter the distance between them (entanglement)â paled in comparison to the passion he developed after realizing the fieldâs true potential.Â
âThe idea that we can use quantum computers to simulate quantum physicsâand the impact that could have on the worldâblew my mind,â says Majidy. âIf the world is fundamentally quantum mechanical, then as long as we are advancing science, we are going to want to understand how quantum systems work. To me, building the tools to do that feels as fundamental as building the microscope.âÂ
He counts Laflamme and his co-advisor from the University of Maryland, Nicole Yunger Halpern, as his key mentors.Â

From right to left, Majidy with Raymond Laflamme and Nicole Yunger Halpern, whom he counts as his key mentors.
âI wouldnât have been awarded this honour without their support throughout my time at IQC,â Majidy says. âNicole was an essential mentor who took me under her wing and introduced me to quantum thermodynamics. Ray never shot down an idea. He would always respond to my ideas with âYes, and.ââÂ
Laflammeâs âYes, andâ made it possible for Majidy to write the book Building Quantum Computers while still a graduate student. Co-authored by Laflamme and IQC faculty Dr. Christopher Wilson, professor, Department of Electrical and Computer Engineering, the book is now used to teach quantum computing principles at the undergraduate and graduate level at universities in Canada and the United States.Â

âI think IQC is the only place in the world where a graduate student could write a textbook on quantum computing hardware. The institute is so interdisciplinary with faculty whose work spans theory and hardware. I can read about a platform, run over to someoneâs lab to ask a million questions, and then go back to reading.âÂ
-ÌęDr. Shayan Majidy.
Majidy is now a Banting postdoctoral fellow at Harvard University co-supervised by Michael Gullans and Mikhail Lukin. These groups are developing scalable and reliable (fault tolerant) quantum computers. But he says he wants to eventually return to Canada for research or teaching.Â
âThroughout my PhD studies I was in awe of so many of my peers, especially at IQC which attracts such amazing, talented graduate students from all the top schools around the world,â Majidy says. âIt is really special getting the medal knowing I was among so many great people.â
Un diplĂŽmĂ© de lâInstitut dâinformatique quantique reçoit une prestigieuse mĂ©daille de la FacultĂ© des sciences
Par Naomi Grosman
Shayan Majidy, diplĂŽmĂ© de lâInstitut dâinformatique quantique (IQC), est lâun des rĂ©cipiendaires de cette annĂ©e de la mĂ©daille W.B. Pearson, dĂ©cernĂ©e par la FacultĂ© des sciences de lâUniversitĂ© de À¶ĘźÊÓÆ” pour rĂ©compenser la crĂ©ativitĂ© de la recherche prĂ©sentĂ©e dans les thĂšses des Ă©tudiants.Â
Sous la supervision de Raymond Laflamme, professeur au DĂ©partement de physique et dâastronomie, Shayan Majidy a Ă©tudiĂ© la thermodynamique quantique, et plus prĂ©cisĂ©ment ce qui se passe lorsque les scientifiques lĂšvent lâhypothĂšse selon laquelle la mesure de certaines propriĂ©tĂ©s dâun systĂšme ne change pas ses autres propriĂ©tĂ©s.

« En physique, on pose souvent implicitement comme hypothĂšse que les quantitĂ©s conservĂ©es, telles que lâĂ©nergie ou le nombre de particules, sont commutatrices, câest-Ă -dire quâon peut mesurer une propriĂ©tĂ© sans modifier lâautre. Par exemple, mesurer la tempĂ©rature dâune tasse de cafĂ© ne devrait pas changer la quantitĂ© de cafĂ© contenue dans la tasse. En rĂ©alitĂ©, les quantitĂ©s conservĂ©es ne commutent pas nĂ©cessairement. Ma thĂšse portait sur ce qui se passe physiquement lorsque nous levons cette hypothĂšse »,
explique Shayan Majidy, diplĂŽmĂ© de lâIQC.Â
Selon le diplÎmé, sa thÚse de doctorat a aidé à comprendre ces dynamiques, mais il reste encore beaucoup de questions sans réponse.
Créer des outils aussi fondamentaux que le microscope
Lâexpertise de Shayan Majidy en matiĂšre dâinformation quantique est nĂ©e dâun heureux accident. Alors quâil Ă©tudiait au baccalaurĂ©at Ă lâUniversitĂ© de Guelph, il sâest inscrit Ă un cours de mathĂ©matiques dont le titre ne disait pas clairement quâil portait sur la thĂ©orie de lâinformation quantique.
Son enthousiasme initial pour la mĂ©canique quantique â du fait que les particules existent dans plusieurs Ă©tats Ă la fois (superposition) et que la mesure dâune particule peut dĂ©terminer instantanĂ©ment lâĂ©tat de lâautre, quelle que soit la distance qui les sĂ©pare (intrication) â nâĂ©tait rien en comparaison de la passion quâil a dĂ©veloppĂ©e aprĂšs avoir compris le vĂ©ritable potentiel du domaine.
« LâidĂ©e que des ordinateurs quantiques puissent simuler la physique quantique â et lâimpact que cela pourrait avoir sur le monde â mâa Ă©poustouflĂ©, affirme le diplĂŽmĂ©. Si le monde est fondamentalement quantique, alors tant que nous ferons progresser la science, nous tenterons de comprendre comment fonctionnent les systĂšmes quantiques. Pour moi, la mise au point des outils nĂ©cessaires pour y parvenir me semble aussi fondamentale que lâinvention du microscope. »
Il compte le professeur Laflamme et sa codirectrice de lâUniversitĂ© du Maryland, Nicole Yunger Halpern, parmi ses principaux mentors.

« Je nâaurais pas reçu cet honneur sans leur soutien tout au long de mon parcours Ă lâIQC. Nicole a Ă©tĂ© une mentore essentielle qui mâa pris sous son aile et mâa initiĂ© Ă la thermodynamique quantique. Ray nâa rejetĂ© aucune de mes idĂ©es; il y rĂ©pondait toujours par âOui, etâŠâ. »
Le « Oui, et⊠» du professeur Laflamme a permis Ă Shayan Majidy dâĂ©crire le livre Building Quantum Computers alors quâil Ă©tudiait encore aux cycles supĂ©rieurs. CoĂ©crit par Raymond Laflamme et Christopher Wilson, professeur au DĂ©partement de gĂ©nie Ă©lectrique et informatique, lâouvrage est maintenant utilisĂ© pour enseigner les principes de lâinformatique quantique au premier cycle et aux cycles supĂ©rieurs dans les universitĂ©s du Canada et des Ătats-Unis.

« Je pense que lâIQC est le seul endroit au monde oĂč un Ă©tudiant de deuxiĂšme cycle peut Ă©crire un manuel sur lâĂ©quipement utilisĂ© en informatique quantique. LâInstitut est tellement interdisciplinaire que les recherches vont de la thĂ©orie Ă lâĂ©quipement. Je peux me renseigner sur une plateforme, courir jusquâau laboratoire dâune collĂšgue pour lui poser un million de questions, puis revenir Ă ma lecture. »
-se réjouit Shayan Majidy.
Le diplĂŽmĂ© est maintenant titulaire dâune bourse postdoctorale Banting Ă lâUniversitĂ© Harvard, oĂč il est cosupervisĂ© par Michael Gullans et Mikhail Lukin. Les groupes de ces chercheurs dĂ©veloppent des ordinateurs quantiques Ă©volutifs et fiables (tolĂ©rants aux pannes). Mais Shayan Majidy affirme quâil veut Ă©ventuellement revenir au Canada pour faire de la recherche ou enseigner.
« Tout au long de mes Ă©tudes de doctorat, jâai Ă©tĂ© impressionnĂ© par beaucoup de mes pairs, en particulier Ă lâIQC, qui attire des Ă©tudiants diplĂŽmĂ©s si incroyables et talentueux de toutes les meilleures Ă©coles du monde. Câest vraiment spĂ©cial de recevoir la mĂ©daille en sachant que je travaillais aux cĂŽtĂ©s de tant de gens formidables. »