Nonlinear quantum logic with colliding graphene plasmons

• URL: http://arxiv.org/abs/2207.05122v2
• Date: Sat, 18 Mar 2023 08:53:26 GMT
• Title: Nonlinear quantum logic with colliding graphene plasmons
• Authors: Giuseppe Calaj\`o, Philipp K. Jenke, Lee A. Rozema, Philip Walther, Darrick E. Chang and Joel D. Cox
• Abstract summary: Graphene has emerged as a promising platform to bring nonlinear quantum optics to the nanoscale. Subwavelength confinement endows propagating plasmons with %large effective masses a flat band dispersion that enhances their interaction. New results open new exciting avenues towards quantum information and many-body applications with strongly-interacting polaritons.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Graphene has emerged as a promising platform to bring nonlinear quantum optics to the nanoscale, where a large intrinsic optical nonlinearity enables long-lived and actively tunable plasmon polaritons to strongly interact. Here we theoretically study the collision between two counter-propagating plasmons in a graphene nanoribbon, where transversal subwavelength confinement endows propagating plasmons with %large effective masses a flat band dispersion that enhances their interaction. This scenario presents interesting possibilities towards the implementation of multi-mode polaritonic gates that circumvent limitations imposed by the Shapiro no-go theorem for photonic gates in nonlinear optical fibers. As a paradigmatic example we demonstrate the feasibility of a high fidelity conditional Pi phase shift (CZ), where the gate performance is fundamentally limited only by the single-plasmon lifetime. These results open new exciting avenues towards quantum information and many-body applications with strongly-interacting polaritons.

Related papers

• Quantum Pair Generation in Nonlinear Metasurfaces with Mixed and Pure Photon Polarizations [0.09423257767158633]
  We present a solution by achieving polarization engineering of frequency-nondegenerate biphotons emitted via spontaneous parametric down-conversion. By performing a comprehensive polarization tomography, we demonstrate that the polarization of the emitted photons directly reflects the qBIC mode's far-field properties.
  arXiv  Detail & Related papers  (2024-09-06T19:17:11Z)
• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• Coherent anharmonicity transfer from matter to light in the THz regime [0.0]
  We introduce an infrared cavity quantum electrodynamics (QED) approach for imprinting nonlinear phase shifts on individual THz pulses. Power-dependent phase shifts on the order of $ 0.1, pi$ can be achieved with femtosecond pulses of only a few $mu$W input power.
  arXiv  Detail & Related papers  (2023-09-21T16:16:40Z)
• Impact of the phonon environment on the nonlinear quantum-dot-cavity QED. I. Path-integral approach [0.0]
  We show a strong influence of the phonon environment on the coherent dynamics of the quantum dot (QD)-cavity system. We present a semi-analytically exact path-based approach to the nonlinear optical response of this system.
  arXiv  Detail & Related papers  (2023-06-30T15:08:29Z)
• Floquet-engineered nonlinearities and controllable pair-hopping processes: From optical Kerr cavities to correlated quantum matter [0.0]
  This work explores the possibility of creating and controlling unconventional nonlinearities by periodic driving. By means of a parent quantum many-body description, we demonstrate that such driven systems are well captured by an effective NLSE. We analyze these intriguing properties both in the weakly-interacting (mean-field) regime, captured by the effective NLSE, and in the strongly-correlated quantum regime.
  arXiv  Detail & Related papers  (2023-04-12T13:56:27Z)
• Resolving Fock states near the Kerr-free point of a superconducting resonator [51.03394077656548]
  We have designed a tunable nonlinear resonator terminated by a SNAIL (Superconducting Asymmetric Inductive eLement) We have excited photons near this Kerr-free point and characterized the device using a transmon qubit.
  arXiv  Detail & Related papers  (2022-10-18T09:55:58Z)
• Magnetic-field-induced cavity protection for intersubband polaritons [52.77024349608834]
  We analyse the effect of a strong perpendicular magnetic field on an intersubband transition in a disordered doped quantum well strongly coupled to an optical cavity. The magnetic field changes the lineshape of the intersubband optical transition due to the roughness of the interface of the quantum well from a Lorentzian to a Gaussian one.
  arXiv  Detail & Related papers  (2022-10-14T18:00:03Z)
• Designing Kerr Interactions for Quantum Information Processing via Counterrotating Terms of Asymmetric Josephson-Junction Loops [68.8204255655161]
  static cavity nonlinearities typically limit the performance of bosonic quantum error-correcting codes. Treating the nonlinearity as a perturbation, we derive effective Hamiltonians using the Schrieffer-Wolff transformation. Results show that a cubic interaction allows to increase the effective rates of both linear and nonlinear operations.
  arXiv  Detail & Related papers  (2021-07-14T15:11:05Z)
• 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)
• Enhanced generation of non-degenerate photon-pairs in nonlinear metasurfaces [55.41644538483948]
  Non-degenerate photon-pair generation can enable orders-of-surface enhancement of the photon rate and spectral brightness. We show that the entanglement of the photon-pairs can be tuned by varying the pump polarization, which can underpin future advances and applications of ultra-compact quantum light sources.
  arXiv  Detail & Related papers  (2021-04-15T08:20:17Z)
• Kerr reversal in Josephson meta-material and traveling wave parametric amplification [0.0]
  We report a versatile Josephson transmission line with strong third order nonlinearity which can be tuned from positive to negative values. We operate it to demonstrate reversed Kerr phase-matching mechanism in traveling wave parametric amplification.
  arXiv  Detail & Related papers  (2021-01-14T19:00:03Z)

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.