Preparation of high fidelity entangled cat states with composite pulses
arXiv:2408.00471 · doi:10.1002/qute.202400518
Abstract
We propose a protocol for the preparation of high-fidelity entangled cat states with composite pulses. The physical model contains two Kerr-nonlinear resonators and a cavity. By properly designing the parameters, each Kerr-nonlinear resonator is confined in the cat-state subspace and the entangled cat states can be generated efficiently. We introduce composite two-photon drives with multiple amplitudes and frequencies to improve the fidelity of the entangled cat states in the presence of parameter errors. The performance of the protocol is estimated by taking into account the parametric errors and decoherence. Numerical simulation results show that the protocol is insensitive to timing error and detuning error, and has strong robustness to decoherence. We hope the protocol may provide a method for preparing stable entangled cat states.
9 pages, 7 figures, comments are welcome
References in corpus (26)
- Supplementary information for "Quantum supremacy using a programmable superconducting processor"
- Charge insensitive qubit design derived from the Cooper pair box
- Surface codes: Towards practical large-scale quantum computation
- Microwave photonics with superconducting quantum circuits
- The Magnus expansion and some of its applications
- Effective Hamiltonian Theory and Its Applications in Quantum Information
- Building a fault-tolerant quantum computer using concatenated cat codes
- Possible realization of entanglement, logical gates and quantum information transfer with superconducting-quantum-interference-device qubits in cavity QED
- Low-decoherence flux qubit
- Bosonic quantum error correction codes in superconducting quantum circuits
- Shortcuts to Adiabaticity for the Quantum Rabi Model: Efficient Generation of Giant Entangled cat States via Parametric Amplification
- Josephson junction-embedded transmission-line resonators: from Kerr medium to in-line transmon
- Robust two-qubit gates in a linear ion crystal using a frequency-modulated driving force
- Selective coupling of superconducting qubits via tunable stripline cavity
- Quantum control of bosonic modes with superconducting circuits
- Phase-modulated decoupling and error suppression in qubit-oscillator systems
- Nonadiabatic geometric quantum computation with cat qubits via invariant-based reverse engineering
- Robust Mølmer-Sørensen gate for neutral atoms using rapid adiabatic Rydberg dressing
- Fast dynamical decoupling of the Molmer-Sorensen entangling gate
- Fault-tolerant multiqubit geometric entangling gates using photonic cat-state qubits
- Remote preparation of optical cat states based on Gaussian entanglement
- Quantifying quantum coherence of optical cat states
- Generating and detecting entangled cat states in dissipatively coupled degenerate optical parametric oscillators
- Deterministic generation of Greenberger-Horne-Zeilinger entangled states of cat-state qubits in circuit QED
- Error-Tolerant Amplification and Simulation of the Ultrastrong-Coupling Quantum Rabi Model
- Experimental preparation and manipulation of squeezed cat states via an all-optical in-line squeezer