Los Alamos Researchers Invert Quantum Time’s Arrow, Powering a Measurement Engine
Updated
Updated · SciTechDaily · Jun 22
Los Alamos Researchers Invert Quantum Time’s Arrow, Powering a Measurement Engine
3 articles · Updated · SciTechDaily · Jun 22
Summary
Physical Review X reported Los Alamos protocols that use measurements, feedback and tailored control fields to suppress, stretch or invert a quantum system’s apparent arrow of time.
Quantum measurements do not just observe—they disturb the system—so the team designed a control Hamiltonian that cancels, amplifies or overcorrects those disturbances to create time-reversed-looking trajectories.
The same framework produced a measurement-powered engine that extracts usable energy from monitoring a quantum system, turning measurement itself into a thermodynamic resource.
Future tests will target superconducting qubits, where fast feedback and efficient detection could let researchers implement the protocols and extend them to quantum state preparation.
How close are we to using these protocols to rewind quantum errors and finally build a stable quantum computer?
Can this quantum 'time machine' actually generate more energy than it consumes, creating a new power source from information?
If scientists can now reverse time at the quantum level, is the forward flow of time just an illusion?
Los Alamos Breakthrough: Reversing the Arrow of Time in Quantum Systems with Measurement Engines (June 2026)
Overview
In June 2026, Los Alamos National Laboratory achieved a major breakthrough by developing quantum control protocols that can effectively reshape or even reverse the 'arrow of time' in quantum systems. Their sophisticated tools allow precise control of energy flow, enabling quantum processes to appear as if running backward. This innovation not only challenges our basic understanding of causality and thermodynamics but also introduces the concept of a measurement engine that can extract energy from the act of monitoring itself. These advances open new possibilities for quantum technology, energy management, and our understanding of time at the quantum level.