A quantum computer
can take various forms -- they could even run on a liquid or gas medium rather than a computer chip.
But until recently, that possibility has remained only theoretical, as no one has known how to build a quantum computer
, much less program one.
The development ofa large-scale quantum computer
could place many encryption systems at risk, according to the committee.
Last week I visited the same lab, where my hosts showed me the world's first quantum computer
that can handle 50 quantum bits, or qubits, which it unveiled in November.
That prevents a quantum computer
from going arbitrarily fast and results in an overall quantum speed limit.
IBM subsequently surpassed this benchmark in November by announcing a quantum computer
that handles 50 qubits--yet the announcement still doesn't mean quantum computing is ready for common use.
All the same, scientists have been working on developing a working quantum computer
for years now, and the frenzied competition to be the first has yielded a new record - a 53-qubit quantum simulator.
The team from the University of New South Wales say they have invented a new chip design based on a new type of quantum bit, the basic unit of information in a quantum computer
, known as a qubit.
make 'gates', to control when and how the quantum computer
Now an international race is on to see who can create the first working quantum computer
and to put it to beneficial uses.
A trapped-ion quantum computer
would consist of an array of X-junctions with quantum bits formed by individual ions that are trapped above the surface of the quantum chip (shown in grey).
Davide is a quantum computer
research scientist for the Universities Space Research Association.