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| Scientists at University of Sussex have breakthrough in mitigating environmental "noise" |
Scientists in a new breakthrough successfully mitigate environmental “Noise” factor
A squad of scientists at The University of Sussex have been
successful in mitigating the effect of environmental "noise" on extremely
sensitive operation of a large scale quantum computer. In real world scenario,
technology has to function in an imperfect and fluctuation rich environment.
Successfully tested in lab, it may fail in outside world composed of fluctuations
in voltage from an electronic device and stray electromagnetic field from other
electric components. These factors can be collectively called environmental
“noise” that hinders working of any technological development in actual atmosphere thus leaving only option of
making technologies ‘noise friendly’.
According to an article published in the journal Physical Reviews Letters dated 1st November, Ion Quantum Technology
Group of The University of Sussex successfully mitigated the effects of environmental
‘noise’ on trapped ion quantum computers. This breakthrough will open new doors
for creation of large scale quantum computers that can prove handy in solving
real life complex calculations and problems.
Small scale quantum computers that are operational at
present contain quantum bits (component of quantum computers
that can store quantum information) or qubits that are small in number. Smaller qubits count restricts these small
scale quantum computers to controlled laboratory conditions only as
they don’t possess required processing power to solve complex real life
problems thanks to their limited qubits quantity.
On other hand, large scale quantum computer, when built, will have ability of calculate and solve highly complex problems
which will require present fastest supercomputer a billion year to calculate.
Such quantum computer can be pulled into existence by increasing number of
qubits, which will result in increased size of quantum computer. It is
difficult to isolate a computer with large number of qubits from ‘environmental
noise’ which in turn will disrupt its functioning and computation, thus acting as hurdle in
track to build large scale quantum computer.
In order to lessen environmental ‘noise’, the team used
complicated microwave signals and radio frequency capable of influencing the
quantum effects born in separate ion. The execution is based on microwave
technology observed in mobile phones. These scientists successfully reduced the
effect of external factors on trapped in quantum computer with months of hard
work.
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| Professor W. Hensinger Source: The University of Sussex |
“We are now one step
closer of making large scale quantum computer that can enclose millions of
qubits with this advancement. These machines have ability of solving problems
that fastest supercomputers will take billions of years to calculate”, says
Professor Winfried Hensinger, University of Sussex.
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Pointing out at applications of large scale Quantum computer Professor Hensinger explains “Large scale quantum computers may help us in finding new medicines for diseases such as dementia or creating new pharmaceuticals. They can also aid financial sector including agriculture through more efficient fertilizers among numerous other applications. We have just started to understand their vast potential.”
Pointing out at applications of large scale Quantum computer Professor Hensinger explains “Large scale quantum computers may help us in finding new medicines for diseases such as dementia or creating new pharmaceuticals. They can also aid financial sector including agriculture through more efficient fertilizers among numerous other applications. We have just started to understand their vast potential.”
Citations:
F. Mintert, W. K. Hensinger. et. al Resilient
Entangling Gates for Trapped Ions. ,
121 (18) {180501}; Physical Review Letters DOI: 10.1103/PhysRevLett.121.180501
Published: 1 November, 2018
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