Spin Readout in a 22 nm Node Integrated Circuit

• URL: http://arxiv.org/abs/2510.13674v2
• Date: Mon, 20 Oct 2025 12:37:18 GMT
• Title: Spin Readout in a 22 nm Node Integrated Circuit
• Authors: Isobel C. Clarke, Virginia Ciriano-Tejel, David J. Ibberson, Grayson M. Noah, Thomas H. Swift, Mark A. I. Johnson, Ross C. C. Leon, Alberto Gomez-Saiz, John J. L. Morton, M. Fernando Gonzalez-Zalba,
• Abstract summary: We demonstrate single-shot spin readout in addressable quantum dot devices within an IC fabricated using industry-standard 22nm fully depleted silicon-on-insulator technology.<n>The successful observation of spin readout using this process marks a key step towards realising highly scalable and integrated spin qubits.
• Score: 1.718390616727258
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Constructing a quantum computer capable of broad and important applications is likely to require millions of addressable physical qubits, posing the challenge of large-scale integration of quantum systems with classical electronics. Fully depleted silicon-on-insulator CMOS technology has been used to develop a range of cryogenic electronic components for the control and readout of different qubit modalities interfaced on separate chips. However, recent measurements of quantum dots on this technology raise the tantalising prospect of realising control electronics and spin qubits on the same manufacturing platform, within a single integrated circuit (IC). Here, we demonstrate single-shot spin readout in addressable quantum dot devices within an IC fabricated using industry-standard 22 nm fully depleted silicon-on-insulator technology. We achieve spin-to-charge conversion via a ramped energy-selective measurement, detected using a radio-frequency single-electron transistor and addressed by on-chip cryogenic electronics. The observation of consistent readout visibilities exceeding 90% and millisecond spin relaxation times in two nominally identical devices within the addressable array supports the reproducibility of the unit cell. The successful observation of spin readout using this CMOS process marks a key step towards realising highly scalable and integrated spin qubits.

Related papers

• Commercial CMOS Process for Quantum Computing: Quantum Dots and Charge Sensing in a 22 nm Fully Depleted Silicon-on-Insulator Process [0.0]
  Confining electrons or holes in quantum dots formed in the channel of industry-standard silicon-on-insulator CMOS structures is a promising approach to scalable qubit architectures.<n>We present measurement results of a commercial nanostructure fabricated using the GlobalFoundries 22FDX(TM) industrial process.
  arXiv  Detail & Related papers  (2024-12-11T14:41:55Z)
• 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)
• Cryogenic Control and Readout Integrated Circuits for Solid-State Quantum Computing [44.99833362998488]
  cryogenic integrated circuits (ICs) have emerged as potential alternatives to room-temperature electronics. operating at cryogenic temperatures can suppress electronic noise and improve qubit control fidelity. For CMOS ICs specifically, circuit design uncertainties arise due to a lack of reliable models for cryogenic field effect transistors.
  arXiv  Detail & Related papers  (2024-10-21T11:15:45Z)
• Impact of electrostatic crosstalk on spin qubits in dense CMOS quantum dot arrays [0.2529650288460727]
  Current CMOS spin qubit processors consist of dense gate arrays to define the quantum dots. Small but sizeable spin-orbit interactions can transfer this electrostatic crosstalk to the spin g-factors. By studying the Stark shift from tens of spin qubits measured in nine different CMOS devices, we developed a theoretical frawework that explains how electric fields couple to the spin of the electrons.
  arXiv  Detail & Related papers  (2023-09-04T22:44:24Z)
• Control of an environmental spin defect beyond the coherence limit of a central spin [79.16635054977068]
  We present a scalable approach to increase the size of electronic-spin registers. We experimentally realize this approach to demonstrate the detection and coherent control of an unknown electronic spin outside the coherence limit of a central NV. Our work paves the way for engineering larger quantum spin registers with the potential to advance nanoscale sensing, enable correlated noise spectroscopy for error correction, and facilitate the realization of spin-chain quantum wires for quantum communication.
  arXiv  Detail & Related papers  (2023-06-29T17:55:16Z)
• An integrated microwave-to-optics interface for scalable quantum computing [47.187609203210705]
  We present a new design for an integrated transducer based on a superconducting resonator coupled to a silicon photonic cavity. We experimentally demonstrate its unique performance and potential for simultaneously realizing all of the above conditions. Our device couples directly to a 50-Ohm transmission line and can easily be scaled to a large number of transducers on a single chip.
  arXiv  Detail & Related papers  (2022-10-27T18:05:01Z)
• Jellybean quantum dots in silicon for qubit coupling and on-chip quantum chemistry [0.6818394664182874]
  Small size and excellent integrability of silicon metal-oxide-semiconductor (SiMOS) quantum dot spin qubits make them an attractive system for mass-manufacturable, scaled-up quantum processors. This paper investigates the charge and spin characteristics of an elongated quantum dot for the prospects of acting as a qubit-qubit coupler.
  arXiv  Detail & Related papers  (2022-08-08T12:24:46Z)
• First design of a superconducting qubit for the QUB-IT experiment [50.591267188664666]
  The goal of the QUB-IT project is to realize an itinerant single-photon counter exploiting Quantum Non Demolition (QND) measurements and entangled qubits. We present the design and simulation of the first superconducting device consisting of a transmon qubit coupled to a resonator using Qiskit-Metal.
  arXiv  Detail & Related papers  (2022-07-18T07:05:10Z)
• Five-second coherence of a single spin with single-shot readout in silicon carbide [84.97423065534817]
  We demonstrate single-shot readout of single defects in silicon carbide (SiC) We achieve over 80% readout fidelity without pre- or post-selection. We report single spin T2 > 5s, over two orders of magnitude greater than previously reported in this system.
  arXiv  Detail & Related papers  (2021-10-04T17:35:02Z)
• Integrated multiplexed microwave readout of silicon quantum dots in a cryogenic CMOS chip [0.5202988483354373]
  Solid-state quantum computers require classical electronics to control and readout individual qubits and to enable fast classical data processing. Integrating both subsystems at deep cryogenic temperatures may solve some major scaling challenges, such as system size and input/output (I/O) data management. Here we present a cryogenic integrated circuit (IC) fabricated using industrial CMOS technology that hosts three key ingredients of a silicon-based quantum processor.
  arXiv  Detail & Related papers  (2021-01-20T19:30:15Z)
• Conditional quantum operation of two exchange-coupled single-donor spin qubits in a MOS-compatible silicon device [48.7576911714538]
  Silicon nanoelectronic devices can host single-qubit quantum logic operations with fidelity better than 99.9%. For the spins of an electron bound to a single donor atom, introduced in the silicon by ion implantation, the quantum information can be stored for nearly 1 second. Here we demonstrate the conditional, coherent control of an electron spin qubit in an exchange-coupled pair of $31$P donors implanted in silicon.
  arXiv  Detail & Related papers  (2020-06-08T11:25:16Z)
• Circuit Quantum Electrodynamics [62.997667081978825]
  Quantum mechanical effects at the macroscopic level were first explored in Josephson junction-based superconducting circuits in the 1980s. In the last twenty years, the emergence of quantum information science has intensified research toward using these circuits as qubits in quantum information processors. The field of circuit quantum electrodynamics (QED) has now become an independent and thriving field of research in its own right.
  arXiv  Detail & Related papers  (2020-05-26T12:47:38Z)

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.