High-Fidelity Quantum State Transfer in Multimode Resonators via Tunable Pulses

• URL: http://arxiv.org/abs/2603.25264v1
• Date: Thu, 26 Mar 2026 10:02:40 GMT
• Title: High-Fidelity Quantum State Transfer in Multimode Resonators via Tunable Pulses
• Abstract summary: State transfer between distant nodes is essential for distributed quantum information processing.<n>Existing protocols are typically optimized for specific coupling regimes, such as adiabatic dark-state transfer in the single-mode limit and pitch-and-catch schemes in the multimode regime.<n>Here we identify a minimal two- parameter control framework that enables high-fidelity quantum state transfer across this single-mode-to-multimode crossover in a multimode quantum channel.
• Score: 1.9499120576896232
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum state transfer between distant nodes is essential for distributed quantum information processing. Existing protocols are typically optimized for specific coupling regimes, such as adiabatic dark-state transfer in the single-mode limit and pitch-and-catch schemes in the multimode regime, leaving the crossover between them without a simple and unified control strategy. Here we identify a minimal two-parameter control framework that enables high-fidelity quantum state transfer across this single-mode-to-multimode crossover in a multimode quantum channel. Using a pulse-shaped pitch-and-catch protocol controlled only by the pulse ramp rate and the emission-absorption delay, we achieve transfer fidelities exceeding 99.9%, extending pitch-and-catch protocols toward the single-mode limit without requiring dark-state protection or complex pulse design. We further demonstrate robustness against dissipation, disorder, detuning, and imperfect initialization under experimentally realistic conditions. These results provide a simple and broadly applicable framework for state transfer in multimode quantum channels, with relevance to circuit-QED and hybrid quantum-acoustic systems.

Related papers

• Mitigating crosstalk errors for simultaneous single-qubit gates on a superconducting quantum processor [59.06950309601253]
  Single-qubit gates on superconducting quantum processors are typically implemented using microwave pulses applied through dedicated control lines.<n>These microwave pulses may also drive other qubits due to crosstalk arising from capacitive coupling and wavefunction overlap.<n>Crosstalk and frequency crowding increase errors during simultaneous single-qubit operations relative to isolated gates.
  arXiv  Detail & Related papers  (2026-03-11T17:47:32Z)
• Multi-level spectral navigation with geometric diabatic-adiabatic control [0.0]
  We introduce a framework for efficient few- parameter pulse optimization in multi-level quantum systems.<n>Our method interpolates smoothly between adiabatic and diabatic dynamics to minimize unwanted excitations.<n>We showcase the flexibility of our diabatic-adiabatic protocols through two examples in spin-based quantum information processing.
  arXiv  Detail & Related papers  (2026-02-16T14:01:15Z)
• Quantum geometric protocols for fast high-fidelity adiabatic state transfer [0.0]
  We develop a framework for optimal control based on the quantum metric tensor. This framework allows for fast and high-fidelity adiabatic pulses, even for a dense energy spectrum. We show that for the geometric protocol, the transfer fidelites are lower bounded $F>99%$ for ultrafast 20 ns pulses.
  arXiv  Detail & Related papers  (2024-09-04T21:14:32Z)
• Quantum State Transfer via a Multimode Resonator [4.324470586239192]
  Large-scale fault-tolerant superconducting quantum computation needs rapid quantum communication.<n>We propose a non-Markovian formalism for quantum state transfer using coupling strengths comparable to the channel's free spectral range.
  arXiv  Detail & Related papers  (2024-06-30T12:44:44Z)
• Crosstalk-Robust Quantum Control in Multimode Bosonic Systems [34.03303487556571]
  High-coherence superconducting cavities offer a hardware-efficient platform for quantum information processing. To achieve universal operations of bosonic modes, the requisite nonlinearity is realized by coupling them to a transmon ancilla. We employ quantum optimal control to engineer ancilla pulses that are robust to the frequency shifts.
  arXiv  Detail & Related papers  (2024-03-01T04:33:12Z)
• 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)
• Pulse-controlled qubit in semiconductor double quantum dots [57.916342809977785]
  We present a numerically-optimized multipulse framework for the quantum control of a single-electron charge qubit. A novel control scheme manipulates the qubit adiabatically, while also retaining high speed and ability to perform a general single-qubit rotation.
  arXiv  Detail & Related papers  (2023-03-08T19:00:02Z)
• Quantum emulation of the transient dynamics in the multistate Landau-Zener model [50.591267188664666]
  We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity. Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
  arXiv  Detail & Related papers  (2022-11-26T15:04:11Z)
• A universal time-dependent control scheme for realizing arbitrary bosonic unitaries [0.0]
  We study the implementation of arbitrary unitary transformations between two sets of $N$ stationary bosonic modes. By controlling the individual couplings between the modes and the channel, an initial $N$-partite quantum state in register A can be released as a multi-photon wavepacket.
  arXiv  Detail & Related papers  (2022-09-20T00:41:44Z)
• High fidelity two-qubit gates on fluxoniums using a tunable coupler [47.187609203210705]
  Superconducting fluxonium qubits provide a promising alternative to transmons on the path toward large-scale quantum computing. A major challenge for multi-qubit fluxonium devices is the experimental demonstration of a scalable crosstalk-free multi-qubit architecture. Here, we present a two-qubit fluxonium-based quantum processor with a tunable coupler element.
  arXiv  Detail & Related papers  (2022-03-30T13:44:52Z)
• Universal non-adiabatic control of small-gap superconducting qubits [47.187609203210705]
  We introduce a superconducting composite qubit formed from two capacitively coupled transmon qubits. We control this low-frequency CQB using solely baseband pulses, non-adiabatic transitions, and coherent Landau-Zener interference. This work demonstrates that universal non-adiabatic control of low-frequency qubits is feasible using solely baseband pulses.
  arXiv  Detail & Related papers  (2020-03-29T22:48:34Z)

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.