Integrated multi-wavelength control of an ion qubit

• URL: http://arxiv.org/abs/2001.05052v2
• Date: Sun, 3 Jan 2021 04:25:20 GMT
• Title: Integrated multi-wavelength control of an ion qubit
• Authors: Robert J. Niffenegger, Jules Stuart, Cheryl Sorace-Agaskar, Dave Kharas, Suraj Bramhavar, Colin D. Bruzewicz, William Loh, Ryan T. Maxson, Robert McConnell, David Reens, Gavin N. West, Jeremy M. Sage, and John Chiaverini
• Abstract summary: Monolithic integration of control technologies for atomic systems is a promising route to the development of quantum computers and portable quantum sensors. Here we demonstrate a surface-electrode ion-trap chip using integrated waveguides and grating couplers. Laser light from violet to infrared is coupled onto the chip via an optical-fiber array, creating an inherently stable optical path.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Monolithic integration of control technologies for atomic systems is a promising route to the development of quantum computers and portable quantum sensors. Trapped atomic ions form the basis of high-fidelity quantum information processors and high-accuracy optical clocks. However, current implementations rely on free-space optics for ion control, which limits their portability and scalability. Here we demonstrate a surface-electrode ion-trap chip using integrated waveguides and grating couplers, which delivers all the wavelengths of light required for ionization, cooling, coherent operations, and quantum-state preparation and detection of Sr+ qubits. Laser light from violet to infrared is coupled onto the chip via an optical-fiber array, creating an inherently stable optical path, which we use to demonstrate qubit coherence that is resilient to platform vibrations. This demonstration of CMOS-compatible integrated-photonic surface-trap fabrication, robust packaging, and enhanced qubit coherence is a key advance in the development of portable trapped-ion quantum sensors and clocks, providing a way toward the complete, individual control of larger numbers of ions in quantum information processing systems.

Related papers

• Scalable Feedback Stabilization of Quantum Light Sources on a CMOS Chip [2.091163184377087]
  Silicon photonics is a leading platform for realizing the vast numbers of physical qubits needed for useful quantum information processing. A challenge to the practical operation and scale-up of silicon quantum-photonic integrated circuits is the need to control their extreme sensitivity to process and temperature variations. Here, we demonstrate the first electronic-photonic quantum system-on-chip (EPQSoC) consisting of quantum-correlated photon-pair sources stabilized via on-chip feedback control circuits.
  arXiv  Detail & Related papers  (2024-11-08T19:10:12Z)
• All-optical modulation with single-photons using electron avalanche [69.65384453064829]
  We demonstrate all-optical modulation using a beam with single-photon intensity. Our approach opens up the possibility of terahertz-speed optical switching at the single-photon level.
  arXiv  Detail & Related papers  (2023-12-18T20:14:15Z)
• Tunable quantum emitters on large-scale foundry silicon photonics [0.6165122427320179]
  Integration of atomic quantum systems with single-emitter tunability remains an open challenge. Here, we overcome this barrier through the hybrid integration of multiple InAs/InP microchiplets containing high-brightness infrared semiconductor quantum dot single photon emitters. We achieve single photon emission via resonance fluorescence and scalable emission wavelength tunability through an electrically controlled non-volatile memory.
  arXiv  Detail & Related papers  (2023-06-10T15:04:30Z)
• Robust phase-controlled gates for scalable atomic quantum processors using optical standing waves [0.0]
  A simple scheme is presented for realizing robust optically controlled quantum gates for scalable atomic quantum processors. Atoms localized close to the antinodes of the standing wave can realize phase-controlled quantum operations.
  arXiv  Detail & Related papers  (2022-10-02T17:12:43Z)
• High-efficiency microwave-optical quantum transduction based on a cavity electro-optic superconducting system with long coherence time [52.77024349608834]
  Frequency conversion between microwave and optical photons is a key enabling technology to create links between superconducting quantum processors. We propose a microwave-optical platform based on long-coherence-time superconducting radio-frequency (SRF) cavities. We show that the fidelity of heralded entanglement generation between two remote quantum systems is enhanced by the low microwave losses.
  arXiv  Detail & Related papers  (2022-06-30T17:57:37Z)
• Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
  We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces. With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
  arXiv  Detail & Related papers  (2022-03-28T19:37:08Z)
• Topologically Protecting Squeezed Light on a Photonic Chip [58.71663911863411]
  Integrated photonics offers an elegant way to increase the nonlinearity by confining light strictly inside the waveguide. We experimentally demonstrate the topologically protected nonlinear process of spontaneous four-wave mixing enabling the generation of squeezed light on a silica chip.
  arXiv  Detail & Related papers  (2021-06-14T13:39:46Z)
• 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)
• 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)
• Integrated optical multi-ion quantum logic [4.771545115836015]
  Planar-fabricated optics integrated within ion trap devices can make such systems simultaneously more robust and parallelizable. We use scalable optics co-fabricated with a surface-electrode ion trap to achieve high-fidelity multi-ion quantum logic gates. Similar devices may also find applications in neutral atom and ion-based quantum-sensing and timekeeping.
  arXiv  Detail & Related papers  (2020-02-06T13:52:01Z)
• Dynamic control of Purcell enhanced emission of erbium ions in nanoparticles [0.0]
  We demonstrate the control of the Purcell enhanced emission of a small ensemble of erbium ions doped into nanoparticles. We can tune the cavity on- and out of-resonance by controlling its length with sub-nanometer precision. This allows us to shape in real time the Purcell enhanced emission of the ions and to achieve full control over the emitted photons' waveforms.
  arXiv  Detail & Related papers  (2020-01-23T14:09:55Z)

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.