Arun K. Pati
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Arun Kumar Pati is an Indian
physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate cau ...
notable for his research in
quantum information Quantum information is the information of the state of a quantum system. It is the basic entity of study in quantum information theory, and can be manipulated using quantum information processing techniques. Quantum information refers to both t ...
,
quantum computation A quantum computer is a computer that exploits quantum mechanical phenomena. On small scales, physical matter exhibits properties of both particles and waves, and quantum computing takes advantage of this behavior using specialized hardware. C ...
and Foundations of
quantum mechanics Quantum mechanics is the fundamental physical Scientific theory, theory that describes the behavior of matter and of light; its unusual characteristics typically occur at and below the scale of atoms. Reprinted, Addison-Wesley, 1989, It is ...
. He has made pioneering contributions in the area of quantum information.


Education

Arun K Pati completed his schooling from the Hari-Hara High School Aska, Ganjam, Odisha in 1981. He studied his bachelor's degree from Aska Science College, Aska during 1981–1985. He completed his master's degree in physics from
Berhampur University Berhampur University is a public teaching-cum-affiliating university in Brahmapur, Odisha, India. History Berhampur University was established on 2 January 1967 as an affiliating University by the Odisha Act 21 of 1966. Lingaraj Law College ...
, Odisha, in 1987. Subsequently, in 1988, he joined the Training School Program at BARC,
Mumbai Mumbai ( ; ), also known as Bombay ( ; its official name until 1995), is the capital city of the Indian state of Maharashtra. Mumbai is the financial capital and the most populous city proper of India with an estimated population of 12 ...
,
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
.


Career

Originally from the state of
Odisha Odisha (), formerly Orissa (List of renamed places in India, the official name until 2011), is a States and union territories of India, state located in East India, Eastern India. It is the List of states and union territories of India by ar ...
in
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
, Pati obtained his PhD from the
University of Bombay University of Mumbai is a public university, public List of largest universities and university networks by enrollment, state university in Mumbai. It is one of the List of largest universities and university networks by enrollment, largest univ ...
,
Mumbai Mumbai ( ; ), also known as Bombay ( ; its official name until 1995), is the capital city of the Indian state of Maharashtra. Mumbai is the financial capital and the most populous city proper of India with an estimated population of 12 ...
. In 1989, he took up a position as a theoretical physicist in the Theoretical Physics Division, BARC,
Mumbai Mumbai ( ; ), also known as Bombay ( ; its official name until 1995), is the capital city of the Indian state of Maharashtra. Mumbai is the financial capital and the most populous city proper of India with an estimated population of 12 ...
,
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
. Since 1989, he has been working on
quantum theory Quantum theory may refer to: Science *Quantum mechanics, a major field of physics *Old quantum theory, predating modern quantum mechanics * Quantum field theory, an area of quantum mechanics that includes: ** Quantum electrodynamics ** Quantum chr ...
,
quantum computing A quantum computer is a computer that exploits quantum mechanical phenomena. On small scales, physical matter exhibits properties of wave-particle duality, both particles and waves, and quantum computing takes advantage of this behavior using s ...
and
quantum information Quantum information is the information of the state of a quantum system. It is the basic entity of study in quantum information theory, and can be manipulated using quantum information processing techniques. Quantum information refers to both t ...
. From 1998 to 2000, he was a visiting scientist and an EPSRC fellow at the University of Wales, Bangor, UK. He was a visiting scientist at the
Institute of Physics, Bhubaneswar Institute of Physics, Bhubaneswar is an autonomous research institution of the Department of Atomic Energy (India), Department of Atomic Energy (DAE), Government of India. The institute was founded by Professor Bidhu Bhusan Das, who was Direc ...
,
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
from 2001 to 2010. He was a professor of quantum information at the Harish Chandra Research Institute, Allahabad,
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
from January 2011 to December 2023. He was a Professor and Head of the Center for Quantum Science and Technology (CQST), at IIIT, Hyderabad. He was also a Professor at Center for Quantum Engineering Research and Education (CQuERE), TCG CREST, Kolkata. He is founding Director of Quantum Ecosystem and Technology Council of India (QETCI), Hyderabad. He is honored with K. P. Chair Professorship at
Zhejiang University Zhejiang University (ZJU) is a public university, public research university in Hangzhou, Zhejiang, China. It is affiliated with the Ministry of Education (China), Ministry of Education. The university is part of Project 211, Project 985, and D ...
,
Hangzhou Hangzhou, , Standard Mandarin pronunciation: ; formerly romanized as Hangchow is a sub-provincial city in East China and the capital of Zhejiang province. With a population of 13 million, the municipality comprises ten districts, two counti ...
,
China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
during the period 2013–2015. He is an adjunct professor at IISER, Mohali.


Work

Along with
Samuel L. Braunstein Samuel Leon Braunstein (born 1961) is a professor at the University of York, England. He is a member of a research group in non-standard computation and has a particular interest in quantum information, quantum computation, and black hole ther ...
, he proved the
quantum no-deleting theorem In physics, the no-deleting theorem of quantum information science, quantum information theory is a no-go theorem which states that, in general, given two copies of some arbitrary quantum state, it is impossible to delete one of the copies. It is a ...
. Similar to the no-cloning theorem, the
no-deleting theorem In physics, the no-deleting theorem of quantum information theory is a no-go theorem which states that, in general, given two copies of some arbitrary quantum state, it is impossible to delete one of the copies. It is a time-reversed dual to the no ...
is a fundamental consequence of the linearity of quantum mechanics. This proves that given two copies of an unknown quantum state we cannot delete one copy. The no-cloning and the no-deleting theorems suggest that we can neither create nor destroy quantum information. His other important collaborative work with Braunstein includes the quantum
no-hiding theorem The no-hiding theorem states that if information is lost from a system via decoherence, then it moves to the subspace of the environment and it cannot remain in the correlation between the system and the environment. This is a fundamental consequen ...
. This states that if quantum information is lost from one subsystem then it remains in the rest of the universe and cannot be hidden in the quantum correlation between the original system and the environment. This has applications that include
quantum teleportation Quantum teleportation is a technique for transferring quantum information from a sender at one location to a receiver some distance away. While teleportation is commonly portrayed in science fiction as a means to transfer physical objects from on ...
, quantum state randomization,
thermalization In physics, thermalisation (or thermalization) is the process of physical bodies reaching thermal equilibrium through mutual interaction. In general, the natural tendency of a system is towards a state of equipartition of energy and uniform tempe ...
and the
black hole information loss paradox The black hole information paradox is a paradox that appears when the predictions of quantum mechanics and general relativity are combined. The theory of general relativity predicts the existence of black holes that are regions of spacetime from ...
. The no-hiding theorem has been experimentally tested and this is a clear demonstration of the conservation of quantum information. Pati also discovered the remote state preparation (RSP) protocol in quantum information theory. This is an important quantum communication scheme similar to
quantum teleportation Quantum teleportation is a technique for transferring quantum information from a sender at one location to a receiver some distance away. While teleportation is commonly portrayed in science fiction as a means to transfer physical objects from on ...
. In RSP protocol, Alice can prepare a known qubit chosen from special ensemble at Bob's location using a maximally entangled state and one bit of classical communication. This has been experimentally tested by several groups. Pati along with
Artur Ekert Artur Konrad Ekert (born 19 September 1961) is a British / Polish professor of quantum physics at the Mathematical Institute, University of Oxford, professorial fellow in quantum physics and cryptography at Merton College, Oxford, Lee Kong Chi ...
,
Vlatko Vedral Vlatko Vedral (born 1971) is a Serbian-born British physicist. He is best known for his contributions to quantum information theory, quantum mechanics, and quantum entanglement. He earned his Bachelor of Science and Doctor of Philosophy degrees ...
and other scientists have introduced the concept of geometric phase for mixed states. This has been experimentally measured by several groups around the world. In another fundamental work, Pati along with L. Maccone have discovered stronger uncertainty relations that go beyond the
Heisenberg uncertainty relation The uncertainty principle, also known as Heisenberg's indeterminacy principle, is a fundamental concept in quantum mechanics. It states that there is a limit to the precision with which certain pairs of physical properties, such as position a ...
. These new relations capture the notion of incompatible observables and show that quantum world is more uncertain than what Heisenberg-Robertson's uncertainty relation has explicated us.


Honors

Pati is the recipient of the India Physics Association Award for Young Physicist of the Year (2000) and the Indian Physical Society Awards for Young Scientists (1996). He is also recipient of Samanta Chandra Sekhar Award for the year 2009 from Orissa Bigyan Academy, Bhubaneswar, Odisha. He is an elected Fellow of the Indian Academy of Science, Bangalore. He also has been elected as the Fellow of The National Academy of Sciences, India in 2013. He received J C Bose Fellowship from the Department of Science and Technology (DST), Government of India in 2019. He received Distinguished Alumni Award from
Berhampur University Berhampur University is a public teaching-cum-affiliating university in Brahmapur, Odisha, India. History Berhampur University was established on 2 January 1967 as an affiliating University by the Odisha Act 21 of 1966. Lingaraj Law College ...
, Odisha on its 55th Foundation Day in 2021. His important research work have been featured in news items in
Nature Nature is an inherent character or constitution, particularly of the Ecosphere (planetary), ecosphere or the universe as a whole. In this general sense nature refers to the Scientific law, laws, elements and phenomenon, phenomena of the physic ...
, Nature Asia and
Science Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into twoor threemajor branches: the natural sciences, which stu ...
. Arun K Pati has been in the World Rank list of Top 2% Scientists recently published by the Stanford University. He is also among Top 1% Scientists in General Physics and holds First position among Indian Scientists in General Physics.


Books by Pati

*
Samuel L. Braunstein Samuel Leon Braunstein (born 1961) is a professor at the University of York, England. He is a member of a research group in non-standard computation and has a particular interest in quantum information, quantum computation, and black hole ther ...
and Arun K. Pati, ''Quantum Information with Continuous Variables'', Kluwer Academic Publisher, The Netherland, 2003. *
Derek Abbott Derek Abbott (born 1960) is a British-Australian physicist and electronic engineer, and professor at the University of Adelaide. He is known for claiming to have identified the "Somerton Man", whose body had been found decades earlier on an A ...
,
Paul C. W. Davies Paul Charles William Davies (born 22 April 1946) is an English physicist, writer and broadcaster, a professor in Arizona State University and director of BEYOND: Center for Fundamental Concepts in Science. He is affiliated with the Institute ...
, and Arun K. Pati (Eds.), with foreword by
Roger Penrose Sir Roger Penrose (born 8 August 1931) is an English mathematician, mathematical physicist, Philosophy of science, philosopher of science and Nobel Prize in Physics, Nobel Laureate in Physics. He is Emeritus Rouse Ball Professor of Mathematics i ...
, ''
Quantum Aspects of Life ''Quantum Aspects of Life'', a book published in 2008 with a foreword by Roger Penrose, explores the open question of the role of quantum mechanics at molecular scales of relevance to biology. The book contains chapters written by various world-e ...
'',
Imperial College Press Imperial College Press (ICP) was formed in 1995 as a partnership between Imperial College of Science, Technology and Medicine in London and World Scientific publishing. This publishing house was awarded the rights, by The Nobel Foundation, Swed ...
, 2008, .


See also

*
Samuel L. Braunstein Samuel Leon Braunstein (born 1961) is a professor at the University of York, England. He is a member of a research group in non-standard computation and has a particular interest in quantum information, quantum computation, and black hole ther ...
* ''
Quantum Aspects of Life ''Quantum Aspects of Life'', a book published in 2008 with a foreword by Roger Penrose, explores the open question of the role of quantum mechanics at molecular scales of relevance to biology. The book contains chapters written by various world-e ...
''


References

{{DEFAULTSORT:Pati, Arun Kumar Living people People from Odisha Berhampur University University of Mumbai alumni 20th-century Indian physicists Scientists from Odisha Indian quantum physicists Indian physicists Indian theoretical physicists Fellows of the Indian Academy of Sciences 1966 births Quantum information scientists