Ordinary computers manipulate "bits" of information, which, like light
switches, can be in one of two states (represented by 1 or 0). Quantum
computers manipulate "qubits": units of information stored in subatomic
particles, which, by the bizarre laws of quantum mechanics, may be in states |1> or |0>, or any
"superposition" (linear combination) of the two. As long as the qubit
is left unmeasured, it embodies both states at once; measuring it
"collapses" it from the superposition to one of its terms. Now, suppose a
quantum computer has two qubits. If they were bits, they could be in only one of
four possible states (00,01,10,11). A pair of qubits also has four
states (|00>,|01>,|01>,|11>), but it can also exist in any
combination of all four. As you increase the number of qubits in the
system, you exponentially increase the amount of information they can
collectively store. Thus, one can theoretically work with myriad
information simultaneously by performing mathematical operations on a
system of unmeasured qubits (instead of probing one bit at a time),
potentially reducing computing times for complex problems from years to
seconds. The difficult task is to efficiently retrieve information
stored in qubits — and physicists aren't there yet.
A Teenage boy pleeded guillty to hack into Apple internal database The 16-year-old accessed 90 gigabytes worth of files, breaking into the system many times over the course of a year from his suburban home in Melbourne, reports The Age newspaper. It says he stored the documents in a folder called 'hacky hack hack'.👻 Apple insists that no customer data was compromised. But The Age reports that the boy had accessed customer accounts. In a statement to the BBC, Apple said: "We vigilantly protect our networks and have dedicated teams of information security professionals that work to detect and respond to threats. "In this case, our teams discovered the unauthorised access, contained it, and reported the incident to law enforcement. "We regard the data security of our users as one of our greatest responsibilities and want to assure our customers that at no point during this incident was their personal data compromised." According to stateme
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