Quantum computers

★ Ultracold science finds new method to get even colder

★ Researchers have developed a clever way to achieve the lowest temperatures ever recorded on Earth.

★ Achieving such temperatures is necessary to study fundamental properties of matter and the strange effects caused by quantum mechanics.

★ The new method relies on "optical lattices" of atoms from which only the hottest atoms are selectively removed.

★ The approach, reported in Nature, may be well-suited to create memory for future quantum computers.

★ Atoms can be held in place using light, forming an "optical lattice", cooled to extremely low temperature

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