Mohammad H. Ansari

{{Short description|Iranian physicist}}

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|name = Mohammad Ansari

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|fields = Physics

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|alma_mater = PhD in Theoretical Physics, University of Waterloo

|doctoral_advisor = Lee Smolin

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|known_for = Quantum physics

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|awards = John Brodie Prize Perimeter Institute for Theoretical Physics

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Mohammad Ansari is a theoretical physicist expert in quantum physics. In 2006, he proposed that quantum gravitational effects can be seen on top of Hawking radiation of black hole.{{cite journal |last=Smolin |first=Lee |title=Quantum gravity faces reality |journal=Physics Today |volume=59 |issue=11 |page=44 |date=2006 |doi=10.1063/1.2435646 |bibcode=2006PhT....59k..44S }}
- {{cite journal |last=Ansari |first=M. H. |title=Spectroscopy of a canonically quantized horizon |journal=Nucl. Phys. B |volume=783 |issue=3 |date=2007 |pages=179–212 |doi=10.1016/j.nuclphysb.2007.01.009 |bibcode=2007NuPhB.783..179A |arxiv=hep-th/0607081 |s2cid=9966483 }} He was the first winner of the John Brodie prize from the Perimeter Institute for Theoretical Physics.{{cite web|url=http://www.perimeterinstitute.ca/images/files/pi_overview.pdf|archivedate=6 September 2018|title=Thomas Thiemann 2006 Early Researcher Award |work=PI Overview|date=Winter 2008 |page=46 |publisher=Perimeter Institute|archive-url=https://web.archive.org/web/20180906195458/http://www.perimeterinstitute.ca/images/files/pi_overview.pdf }}

In 2015, Ansari and Nazarov proposed a quantum version of the fluctuation-dissipation theorem in quantum heat engines that is an exact correspondence between Rényi entropy and Full Counting Statistics (FCS) of energy transfers.{{cite journal |last1=Ansari |first1=Mohammad H. |last2=Nazarov |first2=Yuli V. |year=2015 |title=Exact correspondence between Rényi entropy flows and physical flows |journal=Physical Review B |volume=91 |issue=17 |pages=174307 |arxiv=1502.08020 |bibcode=2015PhRvB..91q4307A |doi=10.1103/PhysRevB.91.174307 |s2cid=36847902 |ref={{harvid|Ansari_Nazarov|2015b}} }}

Ansari has recently reported a novel symmetry in quantum computation that helps to liberate quantum bits from fundamental parasitic interactions. In 2020, experimenters from IBM Watson Research Center verified the symmetry and eliminated the redundant interactions between qubits.{{Cite journal|title=Suppression of Unwanted ZZ Interactions in a Hybrid Two-Qubit System|author1=Jaseung Ku|author2=Xuexin Xu|author3=Markus Brink|author4=David C. McKay|author5=Jared B. Hertzberg|author6=Mohammad H. Ansari|author7=B. L. T. Plourde|journal=Physical Review Letters| volume=125 |page= 200504 |date=11 November 2020|issue=20 |doi=10.1103/PhysRevLett.125.200504|pmid=33258640 |arxiv=2003.02775 |bibcode=2020PhRvL.125t0504K |s2cid=212414995 }}