Spin-Wave Quantum Computing with Atoms in a Single-Mode Cavity

• URL: http://arxiv.org/abs/2109.15252v1
• Date: Thu, 30 Sep 2021 16:34:59 GMT
• Title: Spin-Wave Quantum Computing with Atoms in a Single-Mode Cavity
• Authors: Kevin C. Cox, Przemyslaw Bienias, David H. Meyer, Paul D. Kunz, Donald P. Fahey, Alexey V. Gorshkov
• Abstract summary: We present a method for network-capable quantum computing that relies on holographic spin-wave excitations stored collectively in ensembles of qubits. We show that high-fidelity universal linear controllability can be achieved using only phase shifts, applied in both momentum and position space.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present a method for network-capable quantum computing that relies on holographic spin-wave excitations stored collectively in ensembles of qubits. We construct an orthogonal basis of spin waves in a one-dimensional array and show that high-fidelity universal linear controllability can be achieved using only phase shifts, applied in both momentum and position space. Neither single-site addressability nor high single-qubit cooperativity is required, and the spin waves can be read out with high efficiency into a single cavity mode for quantum computing and networking applications.

Related papers

• Entanglement of photonic modes from a continuously driven two-level system [34.50067763557076]
  We experimentally generate entangled photonic modes by continuously exciting a quantum emitter, a superconducting qubit, with a coherent drive. We show that entanglement is generated between modes extracted from the two sidebands of the resonance fluorescence spectrum. Our approach can be utilized to distribute entanglement at a high rate in various physical platforms.
  arXiv  Detail & Related papers  (2024-07-10T18:48:41Z)
• Cavity-mediated entanglement of parametrically driven spin qubits via sidebands [0.0]
  We consider a pair of quantum dot-based spin qubits that interact via microwave photons in a superconducting cavity, and that are also parametrically driven by separate external electric fields. We show that the sidebands generated via the driving fields enable highly tunable qubit-qubit entanglement using only ac control.
  arXiv  Detail & Related papers  (2023-07-12T10:35:43Z)
• 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)
• Optical Spin Initialisation and Readout with a Cavity-Coupled Quantum Dot in an In-Plane Magnetic Field [0.0]
  We show that a cavity with a single, linearly-polarised mode can simultaneously support both high-fidelity optical spin initialisation and readout in a single, in-plane (Voigt geometry) magnetic field. Our analysis provides optimal parameter regimes for high-fidelity initialisation and readout, and coherent control in both cavity configurations.
  arXiv  Detail & Related papers  (2022-06-22T12:14:24Z)
• Linear and continuous variable spin-wave processing using a cavity-coupled atomic ensemble [0.0]
  We conduct a theoretical analysis of methods to create a high-capacity universal quantum processor and network node. We describe how to establish linear quantum processing using a scheme in a rubidium-atom system. We propose to use the spin-wave processor for continuous-variable quantum information processing.
  arXiv  Detail & Related papers  (2021-09-30T16:24:44Z)
• Coherent control in the ground and optically excited state of an ensemble of erbium dopants [55.41644538483948]
  Ensembles of erbium dopants can realize quantum memories and frequency converters. In this work, we use a split-ring microwave resonator to demonstrate such control in both the ground and optically excited state.
  arXiv  Detail & Related papers  (2021-05-18T13:03:38Z)
• Single photon emission from individual nanophotonic-integrated colloidal quantum dots [45.82374977939355]
  Solution processible colloidal quantum dots hold great promise for realizing single-photon sources embedded into scalable quantum technology platforms. We report on integrating individual colloidal core-shell quantum dots into a nanophotonic network that allows for excitation and efficient collection of single-photons via separate waveguide channels.
  arXiv  Detail & Related papers  (2021-04-23T22:14:17Z)
• Hybrid quantum photonics based on artificial atoms placed inside one hole of a photonic crystal cavity [47.187609203210705]
  Hybrid quantum photonics with SiV$-$-containing nanodiamonds inside one hole of a one-dimensional, free-standing, Si$_3$N$_4$-based photonic crystal cavity is presented. The resulting photon flux is increased by more than a factor of 14 as compared to free-space. Results mark an important step to realize quantum network nodes based on hybrid quantum photonics with SiV$-$- center in nanodiamonds.
  arXiv  Detail & Related papers  (2020-12-21T17:22:25Z)
• Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit-qudit dynamics [50.591267188664666]
  Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
  arXiv  Detail & Related papers  (2020-10-14T14:33:34Z)
• Programmable two-qubit gates in capacitively coupled flopping-mode spin qubits [0.0]
  We show a versatile set of quantum gates between adjacent spin qubits defined in semiconductor quantum dots. We calculate the estimated infidelity of different two-qubit gates in the most immediate possible experimental realizations.
  arXiv  Detail & Related papers  (2020-03-04T15:37:21Z)
• Entanglement generation via power-of-SWAP operations between dynamic electron-spin qubits [62.997667081978825]
  Surface acoustic waves (SAWs) can create moving quantum dots in piezoelectric materials. We show how electron-spin qubits located on dynamic quantum dots can be entangled.
  arXiv  Detail & Related papers  (2020-01-15T19:00:01Z)

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.