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quantum leap

A sudden or important change or improvement. Gary's new job in upper management is a quantum leap forward from his old position at the factory.
See also: leap, quantum

quantum jump

A sudden or important change or improvement. That brand-new shopping center is a quantum jump from the old, run-down mall that used to be in that location.
See also: jump, quantum

quantum leap

A dramatic advance, especially in knowledge or method, as in Establishing a central bank represents a quantum leap in this small country's development. This term originated as quantum jump in the mid-1900s in physics, where it denotes a sudden change from one energy state to another within an atom. Within a decade it was transferred to other advances, not necessarily sudden but very important ones.
See also: leap, quantum

a quantum leap

A quantum leap is a very great and sudden increase in the size, amount, or quality of something. The vaccine represents a quantum leap in healthcare. The scale of migration took a quantum leap in the early 1970s. Note: People sometimes say a quantum jump with the same meaning. We want a quantum jump in exports.
See also: leap, quantum

quantum leap

a sudden large increase or advance.
A literal quantum leap is the abrupt transition of an electron, atom, or molecule from one quantum state to another.
See also: leap, quantum

a quantum ˈleap

(also a quantum ˈjump less frequent) a sudden very large increase, advance or improvement in something: This latest research represents a quantum leap in our understanding of the universe.The quantum leap in writing technology came with the introduction of personal computers.
In physics, a quantum jump is a sudden change in a physical quality such as energy from one fixed level to another.
See also: leap, quantum

quantum leap

A sudden, spectacular advance. The term comes from nuclear physics, where a quantum leap is an abrupt transition from one energy state to another within the submicroscopic atom. William Safire pointed out that while scientists emphasize the suddenness and discontinuity of such a change, the figurative term emphasizes the size of the advance. The term was used in physics from about 1950 and began to be transferred (at first in the form of quantum jump) to other events about 1955.
See also: leap, quantum
References in periodicals archive ?
Such a wave-function shape allowed us to find a method to observe the neutron quantum states: to measure their transmission through a narrow slit [DELTA]z between a horizontal mirror on bottom and a scatterer/absorber on top (referred to as a scatterer hereafter).
The connections between the Jones polynomial and both computers and quantum physics caught Freedman's eye in the late 1980s.
The most remarkable change that Brown and I discussed was the upcoming role of Quantum's DLTtape Group in Quantum v.
The assertion is made that quantum mechanics has ruled invalid the materialistic, reductionist view of the universe, introduced by Newton in the seventeenth century, which formed the foundation of the scientific revolution.
With quantum dots, scientists can simultaneously view many different markers in the same cell.
Entanglement remained a curiosity of quantum mechanics until the 1970s, when theorists started to get an inkling of just how powerful entanglement-exploiting computers might be.
Lately, it's become evident that quantum dots may be turned into extraordinary beacons or sponges of light.
In the light of quantum theory, coin tossing, chess, and perhaps even international negotiations take on a startling, new dimension.
Feverish experimentation now under way in labs around the world may one day lead to quantum computers.