Methods for transverse and longitudinal spin-photon coupling in silicon quantum dots with intrinsic spin-orbit effect

• URL: http://arxiv.org/abs/2308.12626v1
• Date: Thu, 24 Aug 2023 08:04:28 GMT
• Title: Methods for transverse and longitudinal spin-photon coupling in silicon quantum dots with intrinsic spin-orbit effect
• Authors: Kevin S. Guo, MengKe Feng, Jonathan Y. Huang, Will Gilbert, Kohei M. Itoh, Fay E. Hudson, Kok Wai Chan, Wee Han Lim, Andrew S. Dzurak, and Andre Saraiva
• Abstract summary: This paper examines the theory of both transverse and longitudinal spin-photon coupling. We propose a method of coupling which uses the intrinsic spin-orbit interaction arising from orbital degeneracies in SiMOS qubits. We also evaluate the feasibility of a longitudinal coupling driven by an AC modulation on the qubit.
• Score: 0.32301042014102566
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In a full-scale quantum computer with a fault-tolerant architecture, having scalable, long-range interaction between qubits is expected to be a highly valuable resource. One promising method of achieving this is through the light-matter interaction between spins in semiconductors and photons in superconducting cavities. This paper examines the theory of both transverse and longitudinal spin-photon coupling and their applications in the silicon metal-oxide-semiconductor (SiMOS) platform. We propose a method of coupling which uses the intrinsic spin-orbit interaction arising from orbital degeneracies in SiMOS qubits. Using theoretical analysis and experimental data, we show that the strong coupling regime is achievable in the transverse scheme. We also evaluate the feasibility of a longitudinal coupling driven by an AC modulation on the qubit. These coupling methods eschew the requirement for an external micromagnet, enhancing prospects for scalability and integration into a large-scale quantum computer.

Related papers

• Strong hole-photon coupling in planar Ge: probing the charge degree and Wigner molecule states [0.0]
  We present strong coupling between a hole charge qubit and microwave photons in a superconducting quantum interference device (SQUID) array resonator. This work paves the way towards coherent quantum connections between remote hole qubits in planar Ge, required to scale up hole-based quantum processors.
  arXiv  Detail & Related papers  (2023-10-31T17:27:46Z)
• Strong coupling between a photon and a hole spin in silicon [0.0]
  Coupling spins strongly to the photonic modes of superconducting microwave resonators would enable fast non-demolition readout and long-range, on-chip connectivity. We demonstrate strong coupling between a microwave photon in a superconducting resonator and a hole spin in a silicon-based double quantum dot issued from a foundry-compatible MOS fabrication process.
  arXiv  Detail & Related papers  (2022-06-28T15:26:35Z)
• Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
  We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems. Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
  arXiv  Detail & Related papers  (2022-06-03T14:52:34Z)
• Coupled superconducting spin qubits with spin-orbit interaction [0.0]
  Superconducting spin qubits, also known as Andreev spin qubits, promise to combine the benefits of superconducting qubits and spin qubits defined in quantum dots. We show that superconducting spin qubits can be coupled to each other via the superconductor to implement two-qubit quantum gates. We propose a scalable network of superconducting spin qubits which is suitable for implementing the surface code.
  arXiv  Detail & Related papers  (2022-05-08T12:04:37Z)
• Fully tunable longitudinal spin-photon interactions in Si and Ge quantum dots [0.0]
  We show that large longitudinal interactions emerge naturally in state-of-the-art hole spin qubits. We propose realistic protocols to measure these interactions and to implement fast and high-fidelity two-qubit entangling gates.
  arXiv  Detail & Related papers  (2022-03-31T16:36:53Z)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• Electromagnetically induced transparency in inhomogeneously broadened divacancy defect ensembles in SiC [52.74159341260462]
  Electromagnetically induced transparency (EIT) is a phenomenon that can provide strong and robust interfacing between optical signals and quantum coherence of electronic spins. We show that EIT can be established with high visibility also in this material platform upon careful design of the measurement geometry. Our work provides an understanding of EIT in multi-level systems with significant inhomogeneities, and our considerations are valid for a wide array of defects in semiconductors.
  arXiv  Detail & Related papers  (2022-03-18T11:22:09Z)
• Long range magnetic dipole-dipole interaction mediated by a superconductor [0.0]
  Quantum computation and simulation requires strong coherent coupling between qubits, which may be spatially separated. Here we theoretically investigate a method for achieving such coupling, based on superconducting nano-structures designed to channel the magnetic flux created by the qubits. We show that such structures could channel the magnetic flux, enhancing the dipole-dipole interaction between spin qubits and changing its scaling with distance, thus potentially paving the way for controllably engineering an interacting spin system.
  arXiv  Detail & Related papers  (2021-07-11T21:16:29Z)
• A low-loss ferrite circulator as a tunable chiral quantum system [108.66477491099887]
  We demonstrate a low-loss waveguide circulator constructed with single-crystalline yttrium iron garnet (YIG) in a 3D cavity. We show the coherent coupling of its chiral internal modes with integrated superconducting niobium cavities. We also probe experimentally the effective non-Hermitian dynamics of this system and its effective non-reciprocal eigenmodes.
  arXiv  Detail & Related papers  (2021-06-21T17:34:02Z)
• Chemical tuning of spin clock transitions in molecular monomers based on nuclear spin-free Ni(II) [52.259804540075514]
  We report the existence of a sizeable quantum tunnelling splitting between the two lowest electronic spin levels of mononuclear Ni complexes. The level anti-crossing, or magnetic clock transition, associated with this gap has been directly monitored by heat capacity experiments. The comparison of these results with those obtained for a Co derivative, for which tunnelling is forbidden by symmetry, shows that the clock transition leads to an effective suppression of intermolecular spin-spin interactions.
  arXiv  Detail & Related papers  (2021-03-04T13:31:40Z)
• 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)

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.