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Realizing tight-binding Hamiltonians using site-controlled coupled cavity arrays.
Saxena, Abhi; Manna, Arnab; Trivedi, Rahul; Majumdar, Arka.
Afiliação
  • Saxena A; Department of Electrical & Computer Engineering, University of Washington, Seattle, WA, 98195, USA. abhi15@uw.edu.
  • Manna A; Department of Physics, University of Washington, Seattle, WA, 98195, USA.
  • Trivedi R; Department of Electrical & Computer Engineering, University of Washington, Seattle, WA, 98195, USA.
  • Majumdar A; Department of Electrical & Computer Engineering, University of Washington, Seattle, WA, 98195, USA. arka@uw.edu.
Nat Commun ; 14(1): 5260, 2023 Aug 29.
Article em En | MEDLINE | ID: mdl-37644050
Analog quantum simulators rely on programmable and scalable quantum devices to emulate Hamiltonians describing various physical phenomenon. Photonic coupled cavity arrays are a promising alternative platform for realizing such simulators, due to their potential for scalability, small size, and high-temperature operability. However, programmability and nonlinearity in photonic cavities remain outstanding challenges. Here, using a silicon photonic coupled cavity array made up of [Formula: see text] high quality factor ([Formula: see text] up to[Formula: see text]) resonators and equipped with specially designed thermo-optic island heaters for independent control of cavities, we demonstrate a programmable photonic cavity array in the telecom regime, implementing tight-binding Hamiltonians with access to the full eigenenergy spectrum. We report a [Formula: see text] reduction in the thermal crosstalk between neighboring sites of the cavity array compared to traditional heaters, and then present a control scheme to program the cavity array to a given tight-binding Hamiltonian. The ability to independently program high-Q photonic cavities, along with the compatibility of silicon photonics to high volume manufacturing opens new opportunities for scalable quantum simulation using telecom regime infrared photons.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nat Commun Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nat Commun Ano de publicação: 2023 Tipo de documento: Article