Deterministic two-photon C-Z gate with the two-photon quantum Rabi model

• URL: http://arxiv.org/abs/2411.03762v1
• Date: Wed, 06 Nov 2024 08:53:37 GMT
• Title: Deterministic two-photon C-Z gate with the two-photon quantum Rabi model
• Authors: Jia-Cheng Tang, Jin Zhao, Haitao Yang, Junlong Tian, Pinghua Tang, Shuai-Peng Wang, Lucas Lamata, Jie Peng,
• Abstract summary: We propose a scheme for realizing a deterministic two-photon C-Z gate based on variants of the two-photon quantum Rabi model. Our results indicate that the C-Z gate operates fast with high fidelity and is robust against decoherence.
• Score: 7.070259300785883
• License:
• Abstract: We propose a scheme for realizing a deterministic two-photon C-Z gate based on variants of the two-photon quantum Rabi model, which is feasible within the framework of circuit QED. We begin by utilizing the two-photon interaction to implement the nonlinear sign (NS) gate, and subsequently, we construct the C-Z gate following the KLM scheme. We consider three different regimes: the strong coupling regime, the perturbative ultrastrong coupling regime, and the large detuning regime. Our results indicate that the C-Z gate operates fast with high fidelity and is robust against decoherence, thereby offering a suitable approach for achieving deterministic two-photon quantum gates via light-matter interactions.

Related papers

• Quantum CZ Gate based on Single Gradient Metasurface [8.05634054291227]
  We propose a scheme to realize quantum controlled-Z (CZ) gates through single gradient metasurface. Using its unique parallel beam-splitting feature, one metasurface can support a CZ gate, several independent CZ gates, or a cascaded CZ gates.
  arXiv  Detail & Related papers  (2024-05-16T14:48:36Z)
• A chip-scale polarization-spatial-momentum quantum SWAP gate in silicon nanophotonics [7.963795592239752]
  integrated quantum photonics increases the level of scaling complexity. We demonstrate an efficient SWAP gate that swaps a photon's polarization qubit with its spatial-momentum qubit on a nanofabricated two-level silicon-photonics chip. Our gate provides a pathway towards integrated quantum information processing for interconnected modular systems.
  arXiv  Detail & Related papers  (2023-05-16T21:27:11Z)
• Quantum Gate Generation in Two-Level Open Quantum Systems by Coherent and Incoherent Photons Found with Gradient Search [77.34726150561087]
  We consider an environment formed by incoherent photons as a resource for controlling open quantum systems via an incoherent control. We exploit a coherent control in the Hamiltonian and an incoherent control in the dissipator which induces the time-dependent decoherence rates.
  arXiv  Detail & Related papers  (2023-02-28T07:36:02Z)
• Two-qubit gate in neutral atoms using transitionless quantum driving [0.0]
  A neutral-atom system serves as a promising platform for realizing gate-based quantum computing. The two-qubit entangling gate fidelity lags behind competing platforms such as superconducting systems and trapped ions. We propose a fast, robust, high-fidelity controlled-Z gate, based on the Rydberg-blockade mechanism, for neutral atoms.
  arXiv  Detail & Related papers  (2022-06-17T17:51:49Z)
• Three-fold way of entanglement dynamics in monitored quantum circuits [68.8204255655161]
  We investigate the measurement-induced entanglement transition in quantum circuits built upon Dyson's three circular ensembles. We obtain insights into the interplay between the local entanglement generation by the gates and the entanglement reduction by the measurements.
  arXiv  Detail & Related papers  (2022-01-28T17:21:15Z)
• Controlled-Phase Gate by Dynamic Coupling of Photons to a Two-Level Emitter [0.0]
  We propose an architecture for achieving high-fidelity deterministic quantum logic gates on dual-rail encoded photonic qubits. We show that III-V quantum dots in GaAs membranes is a promising platform for photonic quantum information processing.
  arXiv  Detail & Related papers  (2021-10-06T18:00:00Z)
• Realization of arbitrary doubly-controlled quantum phase gates [62.997667081978825]
  We introduce a high-fidelity gate set inspired by a proposal for near-term quantum advantage in optimization problems. By orchestrating coherent, multi-level control over three transmon qutrits, we synthesize a family of deterministic, continuous-angle quantum phase gates acting in the natural three-qubit computational basis.
  arXiv  Detail & Related papers  (2021-08-03T17:49:09Z)
• Two-photon resonance fluorescence of two interacting non-identical quantum emitters [77.34726150561087]
  We study a system of two interacting, non-indentical quantum emitters driven by a coherent field. We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters. This can be exploited for applications such as superresolution imaging of point-like sources.
  arXiv  Detail & Related papers  (2021-06-04T16:13:01Z)
• Universal quantum multi-qubit entangling gates with auxiliary spaces [0.0]
  We present an effective quantum circuit for the implementation of a controlled-NOT (CNOT) gate. The method is extended to the construction of a general n-control-qubit Toffoli gate with (2n-1) qubit-qudit gates and (2n-2) single-qudit gates. Based on the presented quantum circuits, the polarization CNOT and Toffoli gates with linear optics are designed by operating on the spatial-mode degree of freedom of photons.
  arXiv  Detail & Related papers  (2021-05-22T03:30:22Z)
• Hyperentanglement in structured quantum light [50.591267188664666]
  Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes. We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
  arXiv  Detail & Related papers  (2020-06-02T18:00:04Z)
• Improving the Performance of Deep Quantum Optimization Algorithms with Continuous Gate Sets [47.00474212574662]
  Variational quantum algorithms are believed to be promising for solving computationally hard problems. In this paper, we experimentally investigate the circuit-depth-dependent performance of QAOA applied to exact-cover problem instances. Our results demonstrate that the use of continuous gate sets may be a key component in extending the impact of near-term quantum computers.
  arXiv  Detail & Related papers  (2020-05-11T17:20:51Z)

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.