Rapid on-demand generation of thermal states in superconducting quantum circuits
arXiv:2402.09594 · doi:10.1103/6bty-836h
Abstract
We experimentally demonstrate the fast generation of thermal states of a transmon using a single-junction quantum-circuit refrigerator (QCR) as an in-situ-tunable environment. Through single-shot readout, we monitor the transmon up to its third-excited state, assessing population distributions controlled by QCR drive pulses. Whereas cooling can be achieved in the weak-drive regime, high-amplitude pulses can generate Boltzmann-distributed populations from a temperature of 110 mK up to 500 mK within 100 ns. As we propose in our work, this fast and efficient temperature control provides an appealing opportunity to demonstrate a quantum heat engine. Our results also pave the way for efficient dissipative state preparation and for reducing the circuit depth in thermally assisted quantum algorithms and quantum annealing.
References in corpus (13)
- Charge insensitive qubit design derived from the Cooper pair box
- Thermal and Residual Excited-State Population in a 3D Transmon Qubit
- Taming Quantum Noise for Efficient Low Temperature Simulations of Open Quantum Systems
- Theory of quantum-circuit refrigeration by photon-assisted electron tunneling
- The Ising critical quantum Otto engine
- Minimal quantum thermal machine in a bandgap environment: non-Markovian features and anti-Zeno advantage
- On-demand driven dissipation for cavity reset and cooling
- Single-junction quantum-circuit refrigerator
- Initial experimental results on a superconducting-qubit reset based on photon-assisted quasiparticle tunneling
- Charge dynamics in quantum-circuit refrigeration: thermalization and microwave gain
- Quantum-circuit refrigeration of a superconducting microwave resonator well below a single quantum
- Many-excitation removal of a transmon qubit using a single-junction quantum-circuit refrigerator and a two-tone microwave drive
- Pulsed multireservoir engineering for a trapped ion with applications to state synthesis and quantum Otto cycles