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Nergis Mavalvala (born 1968) is a Pakistani-American astrophysicist. She is the Curtis and Kathleen Marble Professor of
Astrophysics Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline, James Keeler, said, astrophysics "seeks to ascertain the ...
at the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a Private university, private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of moder ...
(MIT), where she is also the dean of the university's school of science. She was previously the Associate Head of the university's Department of Physics. Mavalvala is best known for her work on the detection of gravitational waves in the Laser Interferometer Gravitational-Wave Observatory (LIGO) project, and for the exploration and experimental demonstration of
macroscopic The macroscopic scale is the length scale on which objects or phenomena are large enough to be visible with the naked eye, without magnifying optical instruments. It is the opposite of microscopic. Overview When applied to physical phenome ...
quantum In physics, a quantum (: quanta) is the minimum amount of any physical entity (physical property) involved in an interaction. The fundamental notion that a property can be "quantized" is referred to as "the hypothesis of quantization". This me ...
effects such as squeezing in optomechanics. She was awarded a MacArthur Fellowship in 2010.


Early life and education

Mavalvala was born in
Lahore Lahore ( ; ; ) is the capital and largest city of the Administrative units of Pakistan, Pakistani province of Punjab, Pakistan, Punjab. It is the List of cities in Pakistan by population, second-largest city in Pakistan, after Karachi, and ...
, but primarily raised in
Karachi Karachi is the capital city of the Administrative units of Pakistan, province of Sindh, Pakistan. It is the List of cities in Pakistan by population, largest city in Pakistan and 12th List of largest cities, largest in the world, with a popul ...
, Pakistan. She attended the Convent of Jesus and Mary,
Karachi Karachi is the capital city of the Administrative units of Pakistan, province of Sindh, Pakistan. It is the List of cities in Pakistan by population, largest city in Pakistan and 12th List of largest cities, largest in the world, with a popul ...
, where she received her O-Level and
A-Level The A-level (Advanced Level) is a subject-based qualification conferred as part of the General Certificate of Education, as well as a school leaving qualification offered by the educational bodies in the United Kingdom and the educational ...
qualifications. She moved to the United States in 1986 and enrolled at
Wellesley College Wellesley College is a Private university, private Women's colleges in the United States, historically women's Liberal arts colleges in the United States, liberal arts college in Wellesley, Massachusetts, United States. Founded in 1870 by Henr ...
, where she received a
bachelor's degree A bachelor's degree (from Medieval Latin ''baccalaureus'') or baccalaureate (from Modern Latin ''baccalaureatus'') is an undergraduate degree awarded by colleges and universities upon completion of a course of study lasting three to six years ...
in physics and
astronomy Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest includ ...
in 1990. She then joined Rainer Weiss's group in the MIT physics department and received her
PhD A Doctor of Philosophy (PhD, DPhil; or ) is a terminal degree that usually denotes the highest level of academic achievement in a given discipline and is awarded following a course of graduate study and original research. The name of the deg ...
in 1997. Born to a
Parsi The Parsis or Parsees () are a Zoroastrian ethnic group in the Indian subcontinent. They are descended from Persian refugees who migrated to the Indian subcontinent during and after the Arab-Islamic conquest of Iran in the 7th century, w ...
family that practiced
Zoroastrianism Zoroastrianism ( ), also called Mazdayasnā () or Beh-dīn (), is an Iranian religions, Iranian religion centred on the Avesta and the teachings of Zoroaster, Zarathushtra Spitama, who is more commonly referred to by the Greek translation, ...
, Mavalvala was the younger of the two children.


Career

As a graduate student at MIT, she conducted her doctoral work under Rainer Weiss, where Mavalvala developed a prototype laser interferometer for detecting gravitational waves. After graduate school, she worked as a
postdoctoral researcher A postdoctoral fellow, postdoctoral researcher, or simply postdoc, is a person professionally conducting research after the completion of their doctoral studies (typically a PhD). Postdocs most commonly, but not always, have a temporary acade ...
and then as a research scientist at the
California Institute of Technology The California Institute of Technology (branded as Caltech) is a private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small group of institutes ...
, starting her work with
cosmic microwave background The cosmic microwave background (CMB, CMBR), or relic radiation, is microwave radiation that fills all space in the observable universe. With a standard optical telescope, the background space between stars and galaxies is almost completely dar ...
, and then eventually working on the LIGO. Mavalvala focuses primarily on two fields of physics: Gravitational Waves Astrophysics and quantum measurement science. Mavalvala joined the MIT physics faculty in 2002. In 2017 she was elected to the
National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, NGO, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the ...
.


Detection of gravitational waves

Mavalvala was among the team of scientists who, for the first time, observed ripples in the fabric of
spacetime In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualiz ...
called
gravitational wave Gravitational waves are oscillations of the gravitational field that Wave propagation, travel through space at the speed of light; they are generated by the relative motion of gravity, gravitating masses. They were proposed by Oliver Heaviside i ...
s. Mavalvala has been working on gravitational waves since 1991. After the announcement of the observation, she became an instant celebrity scientist in her birthplace of Pakistan. A statement by the
Prime Minister of Pakistan The prime minister of Pakistan (, Roman Urdu, romanized: Wazīr ē Aʿẓam , ) is the head of government of the Islamic Republic of Pakistan. Executive authority is vested in the prime minister and his chosen Cabinet of Pakistan, cabinet, desp ...
Nawaz Sharif Mian Muhammad Nawaz Sharif (born 25 December 1949) is a Pakistani politician and businessman who served as the 12th Prime Minister of Pakistan, prime minister of Pakistan for three non-consecutive terms, first serving from 1990 to 1993, then ...
praised Mavalvala, calling her a source of inspiration for Pakistani scientists and students aspiring to become future scientists. He also stated that ''"the entire nation is proud of her valuable contribution."'' On 20 February 2016, Ambassador of Pakistan to the United States,
Jalil Abbas Jilani Jalil Abbas Jilani is a retired Pakistani diplomat who served in Grade 22 as the Foreign Secretary of Pakistan. He is former Caretaker Minister of Foreign Affairs, he served in office from 17 August 2023 till 4 March 2024. He was born on Februa ...
, conveyed the
Government of Pakistan The Government of Pakistan () (abbreviated as GoP), constitutionally known as the Federal Government, commonly known as the Centre, is the national authority of the Islamic Republic of Pakistan, a federal republic located in South Asia, con ...
's message of felicitation to Mavalvala for her outstanding achievement in the field of astrophysics. He also invited her to re-visit Pakistan, which she accepted.


Laser cooling

Optical cooling of mirrors to nearly
absolute zero Absolute zero is the lowest possible temperature, a state at which a system's internal energy, and in ideal cases entropy, reach their minimum values. The absolute zero is defined as 0 K on the Kelvin scale, equivalent to −273.15 ° ...
can help eliminate measurement noise arising from thermal vibrations. A portion of Mavalvala's work focused on the extension of laser-cooling techniques to optically cool and trap more and more
mass Mass is an Intrinsic and extrinsic properties, intrinsic property of a physical body, body. It was traditionally believed to be related to the physical quantity, quantity of matter in a body, until the discovery of the atom and particle physi ...
ive objects, both for the LIGO project and for other applications, such as to enable observation of quantum phenomena in macroscopic objects. Prominent results from her group in this area included the cooling of a
centimeter upright=1.35, Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales. The microwave is in-between 1 meter to 1 millimeter. A centimetre (International spelling) or centimeter (American ...
-scale object to a temperature of 0.8
kelvin The kelvin (symbol: K) is the base unit for temperature in the International System of Units (SI). The Kelvin scale is an absolute temperature scale that starts at the lowest possible temperature (absolute zero), taken to be 0 K. By de ...
and the observation of a 2.7-
kilogram The kilogram (also spelled kilogramme) is the base unit of mass in the International System of Units (SI), equal to one thousand grams. It has the unit symbol kg. The word "kilogram" is formed from the combination of the metric prefix kilo- (m ...
pendulum A pendulum is a device made of a weight suspended from a pivot so that it can swing freely. When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate i ...
near its quantum
ground state The ground state of a quantum-mechanical system is its stationary state of lowest energy; the energy of the ground state is known as the zero-point energy of the system. An excited state is any state with energy greater than the ground state ...
. These experiments lay the foundations for observing quantum behavior in human-scale objects.


Quantum states of light

Mavalvala has also worked on the development of exotic quantum states of
light Light, visible light, or visible radiation is electromagnetic radiation that can be visual perception, perceived by the human eye. Visible light spans the visible spectrum and is usually defined as having wavelengths in the range of 400– ...
, and in particular the generation of light in squeezed coherent states.Dave Reitze
Squeezed Light Experiment a Glowing Success!
''LIGO Laboratory News'' (28 October 2011).
By injecting such states into the kilometre-scale
Michelson interferometer The Michelson interferometer is a common configuration for optical interferometry and was invented by the American physicist Albert Abraham Michelson in 1887. Using a beam splitter, a light source is split into two arms. Each of those light be ...
of the LIGO detectors, her group greatly improved the sensitivity of the detector by reducing quantum noise; such squeezed states also have many other applications in experimental physics. Her group was the first to generate squeezed light using optomechanics at room temperature, compared to all previous optomechanical squeezed light sources that operated at
cryogenic In physics, cryogenics is the production and behaviour of materials at very low temperatures. The 13th International Institute of Refrigeration's (IIR) International Congress of Refrigeration (held in Washington, DC in 1971) endorsed a univers ...
(very low) temperatures.


Personal life

Mavalvala identifies as a
lesbian A lesbian is a homosexual woman or girl. The word is also used for women in relation to their sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize or associate nouns with female homosexu ...
and speaks openly on her sexual orientation and family history as a Pakistani immigrant, describing herself as an "out, queer person of color." Mavalvala stated that she was not aware of her sexual orientation until after college. Mavalvala is frequently questioned about how she was able to break through the barrier of
gender role A gender role, or sex role, is a social norm deemed appropriate or desirable for individuals based on their gender or sex. Gender roles are usually centered on conceptions of masculinity and femininity. The specifics regarding these gendered ...
s and pursue a career of her choice. In an interview with the Pakistani newspaper ''Dawn,'' Mavalvala states, "I grew up in a family where the stereotypical gender roles were not really observed. So I grew up thinking women can, must and should do anything and everything. That is very important for me." She also speaks about the ability of individuals in Pakistan to break gender roles and stigmas: "Anybody should be able to do those things. And I am proof of that because I am all of those things. With the right combination of opportunity, it was possible for me to do." Mavalvala is often viewed as a role model for aspiring female scientists with roots in the
Indian subcontinent The Indian subcontinent is a physiographic region of Asia below the Himalayas which projects into the Indian Ocean between the Bay of Bengal to the east and the Arabian Sea to the west. It is now divided between Bangladesh, India, and Pakista ...
. As a young child Mavalvala was frequently involved in handy work, and was not bound to stereotypical gender roles in subcontinent culture, due to the manner in which her sister and she were raised. Mavalvala states that much of her success is accredited to good mentors in both the United States and Pakistan that encouraged her academic ability. In a television interview in 2016, Mavalvala stated, "When everyone has access to education that's when all the other things come into place... ou'vegot to do what gives you pleasure, gotta find a way to do it. People should just do what they enjoy most and I think for all of society whether it's in Pakistan or elsewhere we have to create opportunities for young girls to do what they're good at and do what they love to do must cultivate the sense of wonder in a child." Mavalvala and her partner have two children and reside in
Cambridge, Massachusetts Cambridge ( ) is a city in Middlesex County, Massachusetts, United States. It is a suburb in the Greater Boston metropolitan area, located directly across the Charles River from Boston. The city's population as of the 2020 United States census, ...
in the United States. Mavalvala has extended family in Karachi and visited the city in 2010.


Awards and recognition

*2022, Wellesley’s 2022 Commencement Speaker *2017, Mavalvala won the first Lahore Technology Award launched by Information Technology University *2017, the Carnegie Corporation of New York honored Mavalvala as one of its Great Immigrants awards recipients. The awards go to "naturalized citizens who have made notable contributions to the progress of American society." *2016, co-recipient Gruber Prize in Cosmology *2016, co-recipient Special Breakthrough Prize in Fundamental Physics, as a part of LIGO team *2014, NOGLSTP recognized Mavalvala as the
LGBTQ LGBTQ people are individuals who are lesbian, Gay men, gay, bisexual, transgender, queer, or questioning (sexuality and gender), questioning. Many variants of the initialism are used; LGBTQIA+ people incorporates intersex, Asexuality, asexual, ...
Scientist of the Year. *2014, Optica Fellow *2013, Joseph F. Keithley Award For Advances in Measurement Science by the American Physical Society *2010, MacArthur Fellow *2010, American Physical Society Fellow *2007, Edgerton award for faculty achievement at Massachusetts Institute of Technology *2005,
Sloan Research Fellowship The Sloan Research Fellowships are awarded annually by the Alfred P. Sloan Foundation since 1955 to "provide support and recognition to early-career scientists and scholars". This program is one of the oldest of its kind in the United States. ...
*1990, Phyllis Fleming Award for Excellence in Physics


References


Further reading

*


External links


Nergis Mavalvala - MIT Department of Physics

Nergis Mavalvala - MacArthur Foundation

2013 Joseph F. Keithley Award for Advances in Measurement Science Recipient
*
Interview of Nergis Mavalvala by David Zierler on February 18 and April 26, 2021, Niels Bohr Library & Archives, American Institute of Physics
{{DEFAULTSORT:Mavalvala, Nergis 1968 births Living people American people of Parsi descent American Zoroastrians American academics of Pakistani descent American women academics 21st-century American physicists American astrophysicists Massachusetts Institute of Technology School of Science faculty California Institute of Technology alumni Pakistani women academics Pakistani women scientists Pakistani physicists Pakistani Zoroastrians Scientists from Lahore Academics from Karachi Scientists from Cambridge, Massachusetts Wellesley College alumni American women physicists Pakistani women physicists Pakistani emigrants to the United States Lesbian scientists LGBTQ Zoroastrians Pakistani lesbians American lesbians American LGBTQ scientists Pakistani LGBTQ scientists American LGBTQ people of Asian descent Convent of Jesus and Mary, Karachi alumni Fellows of the American Academy of Arts and Sciences Gravitational-wave astronomy Parsi people MacArthur Fellows Members of the United States National Academy of Sciences Naturalized citizens of the United States Fellows of Optica (society) Massachusetts Institute of Technology School of Science alumni Lesbian academics Women in optics 21st-century American women scientists Fellows of the American Physical Society LGBTQ physicists LGBTQ astronomers American scientists of Asian descent