Condensed matter physics

Laser pulses induce electronic changes on the cuprate scale, creating long-lasting quantum states that last about a thousand times longer than normal. Credit: Brad Baxley / Part to Whole

Quantum time freezing: Lasers freeze quantum states a thousand times longer

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Using powerful laser and X-ray pulses, researchers from Harvard and the Scherrer Institute have succeeded in breaking electronic symmetry and trapping a long-lasting quantum state – a move that could lead to breakthroughs in information storage and optoelectronic devices.
Simulation of the experiment in which the first images of a quantum electronic crystal were obtained, the existence of which was predicted 80 years ago. The researchers saw electrons arranged as pearls in a string (red balls) along a nanowire. To observe the electrons without affecting them, a single electron (in green) carried by another nanowire was used as a sensor (scanning detector) that detected the electric fields created by the electrons in the crystal

like an electron on a wire

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