Experimental Realization of Rabi-Driven Reset for Fast Cooling of a High-Q Cavity

• URL: http://arxiv.org/abs/2601.10385v1
• Date: Thu, 15 Jan 2026 13:38:18 GMT
• Title: Experimental Realization of Rabi-Driven Reset for Fast Cooling of a High-Q Cavity
• Authors: Eliya Blumenthal, Natan Karaev, Shay Hacohen-Gourgy,
• Abstract summary: High-Q bosonic memories are central to hardware-efficient quantum error correction.<n>Existing approaches either rely on weak intermode cross-Kerr conversion or on measurement-based sequences with substantial latency.<n>We demonstrate a hardware-efficient Rabi-Driven Reset that implements continuous, measurement-free cooling of a superconducting cavity mode.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: High-Q bosonic memories are central to hardware-efficient quantum error correction, but their isolation makes fast, high-fidelity reset a persistent bottleneck. Existing approaches either rely on weak intermode cross-Kerr conversion or on measurement-based sequences with substantial latency. Here we demonstrate a hardware-efficient Rabi-Driven Reset (RDR) that implements continuous, measurement-free cooling of a superconducting cavity mode. A strong resonant Rabi drive on a transmon, together with sideband drives on the memory and readout modes detuned by the Rabi frequency, converts the dispersive interaction into an effective Jaynes-Cummings coupling between the qubit dressed states and each mode. This realizes a tunable dissipation channel from the memory to the cold readout bath. Crucially, the engineered coupling scales with the qubit-mode dispersive interaction and the drive amplitude, rather than with the intermode cross-Kerr, enabling fast cooling even in very weakly coupled architectures that deliberately suppress direct mode-mode coupling. We demonstrate RDR of a single photon with a decay time of $1.2 μs$, more than two orders of magnitude faster than the intrinsic lifetime. Furthermore, we reset about 30 thermal photons in about $80 μs$ to a steady-state average photon number of $\bar{n} = 0.045 \pm 0.025$.

Related papers

• The quantromon: A qubit-resonator system with orthogonal qubit and readout modes [2.516358999617711]
  We introduce a two-mode circuit, nicknamed quantromon, with two modes implementing a qubit and a resonator.<n>Experiments implemented in a hybrid 2D-3D cQED architecture demonstrate some unique features of the quantromon.
  arXiv  Detail & Related papers  (2025-01-29T06:41:29Z)
• Balanced cross-Kerr coupling for superconducting qubit readout [41.94295877935867]
  Dispersive readout, the standard method for measuring superconducting qubits, is limited by multiphoton qubit-resonator processes.<n>In this work, we propose a novel readout method, termed "junction readout"
  arXiv  Detail & Related papers  (2025-01-15T18:52:08Z)
• High-Coherence Kerr-cat qubit in 2D architecture [1.5626229757473267]
  Kerr-cat qubit is a bosonic qubit in which multi-photon Schrodinger cat states are stabilized. This qubit is a promising candidate to implement quantum error correction codes tailored for noise-biased qubits.
  arXiv  Detail & Related papers  (2024-04-25T15:59:01Z)
• $N$ Scaling of Large-Sample Collective Decay in Inhomogeneous Ensembles [44.99833362998488]
  We experimentally study collective decay of an extended disordered ensemble of $N$ atoms inside a hollow-core fiber. We observe up to $300$-fold enhanced decay rates, strong optical bursts and a coherent ringing.
  arXiv  Detail & Related papers  (2023-07-21T14:43:29Z)
• Enhancing Dispersive Readout of Superconducting Qubits Through Dynamic Control of the Dispersive Shift: Experiment and Theory [47.00474212574662]
  A superconducting qubit is coupled to a large-bandwidth readout resonator. We show a beyond-state-of-the-art two-state-readout error of only 0.25,%$ in 100 ns integration time. The presented results are expected to further boost the performance of new and existing algorithms and protocols.
  arXiv  Detail & Related papers  (2023-07-15T10:30:10Z)
• Qubit readouts enabled by qubit cloaking [49.1574468325115]
  Time-dependent drives play a crucial role in quantum computing efforts. They enable single-qubit control, entangling logical operations, as well as qubit readout. Qubit cloaking was introduced in Lled'o, Dassonneville, et al.
  arXiv  Detail & Related papers  (2023-05-01T15:58:25Z)
• High-fidelity parametric beamsplitting with a parity-protected converter [2.5818006849347857]
  Fast, high-fidelity operations between microwave resonators are an important tool for bosonic quantum computation and simulation. An attractive approach is to couple these resonators via a nonlinear converter and actuate parametric processes with RF drives. We show that in addition to a careful management of drive frequencies and the spectrum of environmental noise, leveraging the inbuilt symmetries of the converter Hamiltonian can suppress unwanted nonlinear interactions. We characterize this beamsplitter in the cavities' joint single-photon subspace, and show that we can detect and post-select photon loss events to achieve a beamsplitter gate
  arXiv  Detail & Related papers  (2023-03-02T04:30:01Z)
• Fast high-fidelity charge readout by operating the cavity-embedded Cooper pair transistor in the Kerr bistable regime [55.41644538483948]
  We demonstrate single-shot resolution between two charge states that are $0.09e$ apart. The measurement is performed with 94$%$ fidelity in a duration of 3 $mu$s.
  arXiv  Detail & Related papers  (2022-12-31T03:44:10Z)
• Generation of perfect-cavity-enhanced atom-photon entanglement with a millisecond lifetime via a spatially-multiplexed cavity [15.370246815318884]
  We create a qubit entangled with a magnetic-field-insensitive spin-wave qubit by applying a single-mode write-laser beam to cold atoms. Experiment demonstrates 50% intrinsic retrieval efficiency for 540 microsecond storage time.
  arXiv  Detail & Related papers  (2021-10-21T08:33:52Z)
• Superconducting coupler with exponentially large on-off ratio [68.8204255655161]
  Tunable two-qubit couplers offer an avenue to mitigate errors in multiqubit superconducting quantum processors. Most couplers operate in a narrow frequency band and target specific couplings, such as the spurious $ZZ$ interaction. We introduce a superconducting coupler that alleviates these limitations by suppressing all two-qubit interactions with an exponentially large on-off ratio.
  arXiv  Detail & Related papers  (2021-07-21T03:03:13Z)
• Fast high-fidelity single-qubit gates for flip-flop qubits in silicon [68.8204255655161]
  flip-flop qubit is encoded in the states with antiparallel donor-bound electron and donor nuclear spins in silicon. We study the multilevel system that is formed by the interacting electron and nuclear spins. We propose an optimal control scheme that produces fast and robust single-qubit gates in the presence of low-frequency noise.
  arXiv  Detail & Related papers  (2021-01-27T18:37:30Z)
• Thermal coupling and effect of subharmonic synchronization in a system of two VO2 based oscillators [55.41644538483948]
  We explore a prototype of an oscillatory neural network (ONN) based on vanadium dioxide switching devices. The effective action radius RTC of coupling depends both on the total energy released during switching and on the average power. In the case of a strong thermal coupling, the limit of the supply current parameters, for which the oscillations exist, expands by 10 %. The effect of subharmonic synchronization hold promise for application in classification and pattern recognition.
  arXiv  Detail & Related papers  (2020-01-06T03:26:53Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.