Quantum information research is one of the hottest areas in 21st-century
science, leading to dramatic improvements in computation speed and secure
communication. To help drive this field forward, the Hebrew University of
Jerusalem has recruited an interdisciplinary team of over 20 researchers from
the fields of physics, computer science, mathematics, chemistry, philosophy and
engineering for its newly-founded Quantum Information Science Center
The research group is set to advance understanding of quantum
information science – which is based on the wave-like nature of matter and light
and our growing ability to create and control advanced structures – and the
development of quantum technologies.
The center is headed by Dr. Nadav
Katz of the Racah Institute of Physics and includes theoretical physics Prof.
Jacob Bekenstein, who won the 2012 Wolf Prize in physics and whose
groundbreaking ideas were originally contested and later confirmed by British
Stephen Hawking; mathematics Prof. Gil Kalai, who won the 2012
Rothschild Prize; and Prof. Elon Lindenstrauss, winner of the 2010 Fields Medal
Others are computer sciences Profs. Michael Ben-Or and
Dorit Aharonov, considered among the founders of the field, for proving that
quantum computation is possible in real-world devices via special
According to Katz, “We believe that the only
way to fundamentally deepen our understanding in the field of quantum
information is through the integration of a variety of research areas and
different languages of science.
This is the only way to achieve
significant breakthroughs in the field. HU already has an excellent cadre of
researchers examining different aspects of quantum information, and the new
center will serve as a shared gathering point and help accelerate their
“Alongside promoting and funding quantum information research,
the center will establish a training program for graduate students, recruit
leading researchers and conduct collaborative cooperation with similar centers
around the world.”
The center marked its launch with an international
conference featuring leaders in the field of quantum information from Europe,
Canada, China, Singapore, the US and Israel. A team headed by center researcher
Prof. Hagai Eisenberg recently made waves in the scientific world by
demonstrating for the first time a quantum link between photons that don’t exist
at the same time. The study was published in Physical Review
MICE IN ‘BIG BROTHER’ SETUP How does a social animal such as a
mouse or human gain dominance over his or her fellow creatures? A unique
experiment conducted by Dr. Tali Kimchi and her team in the Weizmann Institute
of Science’s neurobiology department provides some unusual insight into the
social behavior that enables a social hierarchy to form.
Kimchi and her
research team – Aharon Weissbrod, Genady Wasserman and Alex Shapiro, together
with Dr. Ofer Feinerman of the Rehovot institute’s department of the physics of
complex systems – developed a system that enabled them to observe a large group
of animals living together in semi-natural conditions.
This setup was a
sort of mouse version of the TV show Big Brother.
Different strains of
mice were placed in the “house” – a four-meter-square pen – and allowed to go
about their lives with no intervention from the human team.
automatically track the mice day and night, each mouse was implanted with an ID
chip similar to those used in pet cats and dogs, and video cameras were placed
strategically around the area with infrared lighting that enabled nighttime
With the combined chip reporting and continuous video footage,
the system could automatically keep tabs on each individual mouse, knowing its
precise location down to the half centimeter, in measurements that were recorded
30 times a second for days and sometimes even months on end.
information they obtained was so precise, the team was able to identify dozens
of individual behaviors – eating, drinking, running, sleeping and hiding, as
well as social behaviors – seeking out specific companions for activities or
rest, avoiding certain individuals and attacking others. The researchers found
that it was possible to isolate and identify typical behaviors of individuals,
pairs and groups. In fact just by sorting out behavioral patterns, the automated
system was able to differentiate between the various genetic strains of the mice
in the mixed groups, as well as predicting mating, with over 90 percent
These close observations revealed, among other social features,
how one of the individuals became “king” of the group, attaining dominance over
the others, both male and female.
In further experiments, the “house”
inhabitants comprised one of two strains of mice, the first more “social” and
the second “autistic” (exhibiting little social engagement and rigid behavior
patterns). The system automatically identified the “autistic” mice by
identifying their patterns of movement and public behavior.
In a paper
that appeared recently in Nature Communications, Kimchi and her team describe
the emergence of the dominant leader and the development of a class system in a
group of normal mice – within a mere 24-hour period. Surprisingly, when they
conducted a similar experiment with the autistic-like mice, either no leader
emerged or, if one did, it was quickly overthrown.
The precise, automatic
and semi-natural system the scientists have developed is enabling a deep,
systematic study of the mechanisms for regulating social behavior in animal
models; it may be especially useful for providing insight into the societal
aspects of such disorders as schizophrenia and autism.