Geometric heat pumping on a quantum processor
An experiment on a superconducting quantum processor demonstrated geometric heat pumping, a mechanism that transfers energy between reservoirs held at equal temperature. The setup used a driven qubit that repeatedly interacted with two ancilla qubits in a collision-model configuration. The authors report that the heat exchanged during an adiabatic cycle is determined by the driving contour in parameter space rather than by any temperature difference.
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What this could mean
- 0–2 yearsPlausible
If the collision-model reservoirs can be coupled to real qubit environments, geometric pumping could become a control-pulse-based tool for targeted heat management or microscopic cooling within superconducting circuits.
The demonstration shows energy flow can be induced by parameter-space geometry alone, without temperature gradients. Superconducting processors already have the required qubit and pulse-control infrastructure, so adapting this to move energy away from selected qubits or to implement small on-chip quantum refrigerators is plausible within two years, though the current work uses ancilla qubits as stand-ins for true reservoirs and does not yet show net cooling of an external load.
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