Probing the Quantum Capacitance of Rydberg Transitions of Surface Electrons on Liquid Helium via Microwave Frequency Modulation

• URL: http://arxiv.org/abs/2504.09890v2
• Date: Wed, 30 Apr 2025 10:37:34 GMT
• Title: Probing the Quantum Capacitance of Rydberg Transitions of Surface Electrons on Liquid Helium via Microwave Frequency Modulation
• Authors: Asher Jennings, Ivan Grytsenko, Yiran Tian, Oleksiy Rybalko, Jun Wang, Italy Josef Barabash, Erika Kawakami,
• Abstract summary: We present a method for probing the quantum capacitance associated with the Rydberg transition of surface electrons on liquid helium.<n>Resonant microwave excitation of the Rydberg transition induces a redistribution of image charges on capacitively coupled electrodes.
• Score: 4.555026938911853
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present a method for probing the quantum capacitance associated with the Rydberg transition of surface electrons on liquid helium using radio-frequency (RF) reflectometry. Resonant microwave excitation of the Rydberg transition induces a redistribution of image charges on capacitively coupled electrodes, giving rise to a quantum capacitance originating from adiabatic state transitions and the finite curvature of the energy bands. By applying frequency-modulated resonant microwaves to drive the Rydberg transition, we systematically measured a capacitance sensitivity of 0.34~aF/$\sqrt{\mathrm{Hz}}$ for our RF reflectometry scheme. This sensitivity is sufficient to detect the Rydberg transition of a single electron, offering a scalable pathway toward qubit readout schemes based on surface electrons on helium.

Related papers

• Image-charge detection of electrons on helium in an on-chip trapping device [0.0]
  We report on the detection of the Rydberg transition of electrons on superfluid helium in an on-chip microchannel device.<n>The sensitivity shows the feasibility of detecting the Rydberg transition of a single electron, which can open a new pathway for a non-destructive spin-state readout.
  arXiv  Detail & Related papers  (2025-01-06T05:49:56Z)
• Sensing and Control of Single Trapped Electrons Above 1 Kelvin [0.0]
  A superconducting coplanar waveguide resonator is used to read out the charge state of an electron trap defined by gate electrodes beneath the helium surface.<n> Dispersive frequency shifts are observed as the trap is loaded with electrons, from several tens down to single electrons.<n>This sensitive charge readout scheme can aid efforts to develop large-scale quantum processors.
  arXiv  Detail & Related papers  (2024-12-04T15:34:58Z)
• Plasmon Mode Engineering with Electrons on Helium [0.0]
  An ensemble of electrons trapped above the surface of superfluid helium is a paradigm system for investigating, and controlling, the collective charge dynamics of low-dimensional electronic matter. We present experiments on a hybrid electron-on-helium microchannel device designed to host microwave-frequency plasmon modes.
  arXiv  Detail & Related papers  (2024-08-20T22:56:25Z)
• Thermal masses and trapped-ion quantum spin models: a self-consistent approach to Yukawa-type interactions in the $λ\!φ^4$ model [44.99833362998488]
  A quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins. These interactions can be accounted for by a long-wavelength relativistic theory, where the phonons are described by a coarse-grained Klein-Gordon field. We show that thermal effects, which can be controlled by laser cooling, can unveil this flow through the appearance of thermal masses in interacting QFTs.
  arXiv  Detail & Related papers  (2023-05-10T12:59:07Z)
• 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)
• Quantum metrology of low frequency electromagnetic modes with frequency upconverters [0.0]
  The RQU uses a Josephson interferometer made up of superconducting loops and Josephson junctions to implement a parametric interaction between a low-frequency electromagnetic mode and a mode in the microwave C Band. We analyze RQU performance with quantum amplifier theory, and show that the RQU can operate as a quantum-limited op-amp in this frequency range. We demonstrate signal upconversion from low frequencies to microwave C band using an RQU and show a phase-sensitive gain (extinction ratio) of $46.9$;dB, which is a necessary step towards the realization of full BAE.
  arXiv  Detail & Related papers  (2022-10-11T16:10:30Z)
• Driving alkali Rydberg transitions with a phase-modulated optical lattice [0.0]
  We develop and demonstrate a spectroscopic method for Rydberg-Rydberg transitions using a standing-wave laser field. The method is based on the ponderomotive interaction of the Rydberg electron, which has less-restrictive selection rules than electric-dipole couplings. The method paves the way for optical Doppler-free high-precision spectroscopy of Rydberg-Rydberg transitions and for spatially-selective qubit manipulation.
  arXiv  Detail & Related papers  (2022-10-04T19:46:55Z)
• Measuring the magnon-photon coupling in shaped ferromagnets: tuning of the resonance frequency [50.591267188664666]
  cavity photons and ferromagnetic spins excitations can exchange information coherently in hybrid architectures. Speed enhancement is usually achieved by optimizing the geometry of the electromagnetic cavity. We show that the geometry of the ferromagnet plays also an important role, by setting the fundamental frequency of the magnonic resonator.
  arXiv  Detail & Related papers  (2022-07-08T11:28:31Z)
• Image-charge detection of the Rydberg transition of electrons on superfluid helium confined in a microchannel structure [0.45687771576879593]
  We report on the image-charge detection of the Rydberg transition in a many-electron system confined in an array of 20-um wide and 4-um deep channels filled with superfluid helium. This work demonstrates that microchannel structures provide a suitable platform for electron manipulation and their quantum state detection, with a feasibility of scaling the detection method to a single electron.
  arXiv  Detail & Related papers  (2022-07-08T08:14:07Z)
• Near-monochromatic tuneable cryogenic niobium electron field emitter [48.7576911714538]
  We describe electron field emission from a monocrystalline, superconducting niobium nanotip at a temperature of 5.9 K. The emitted electron energy spectrum reveals an ultra-narrow distribution down to 16 meV. This source will decrease the impact of lens aberration and enable new modes in low-energy electron microscopy, electron energy loss spectroscopy, and high-resolution vibrational spectroscopy.
  arXiv  Detail & Related papers  (2022-05-11T20:46:21Z)
• Slowing down light in a qubit metamaterial [98.00295925462214]
  superconducting circuits in the microwave domain still lack such devices. We demonstrate slowing down electromagnetic waves in a superconducting metamaterial composed of eight qubits coupled to a common waveguide. Our findings demonstrate high flexibility of superconducting circuits to realize custom band structures.
  arXiv  Detail & Related papers  (2022-02-14T20:55:10Z)
• Near-Field Terahertz Nanoscopy of Coplanar Microwave Resonators [61.035185179008224]
  Superconducting quantum circuits are one of the leading quantum computing platforms. To advance superconducting quantum computing to a point of practical importance, it is critical to identify and address material imperfections that lead to decoherence. Here, we use terahertz Scanning Near-field Optical Microscopy to probe the local dielectric properties and carrier concentrations of wet-etched aluminum resonators on silicon.
  arXiv  Detail & Related papers  (2021-06-24T11:06:34Z)
• Photon Condensation and Enhanced Magnetism in Cavity QED [68.8204255655161]
  A system of magnetic molecules coupled to microwave cavities undergoes the equilibrium superradiant phase transition. The effect of the coupling is first illustrated by the vacuum-induced ferromagnetic order in a quantum Ising model. A transmission experiment is shown to resolve the transition, measuring the quantum electrodynamical control of magnetism.
  arXiv  Detail & Related papers  (2020-11-07T11:18:24Z)
• Quantum paraelectric varactors for radio-frequency measurements at mK temperatures [0.0]
  We show that strontium titanate varactors can achieve perfect impedance matching and resonator frequency tuning at 6 mK. This allows us to optimize the radio-frequency readout signal-to-noise ratio of carbon nanotube quantum dot devices.
  arXiv  Detail & Related papers  (2020-07-07T16:12:07Z)
• Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and a pulsed light wave [68.8204255655161]
  Research investigates the resonant high-energy spontaneous bremsstrahlung of ultrarelativistic electrons with considerable energies in the field of a nucleus and a quasimonochromatic laser wave.
  arXiv  Detail & Related papers  (2020-04-05T16:27:11Z)

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.